Our Merkle Wildlife Sanctuary guide covers practical planning for Merkle Wildlife Sanctuary Maryland — best time to visit, getting there, and what to do on the ground. We've compiled the latest 2026 facts on hours, fees, and activities to ensure your visit is seamless and memorable.

Merkle Wildlife Sanctuary Travel Guide — Maryland

As independent US travel authorities, our team at Roam States has explored countless natural havens, and few capture the spirit of wildlife conservation quite like Merkle Wildlife Sanctuary Maryland. Nestled along the Patuxent River in Upper Marlboro, this sprawling 1,670-acre refuge is a critical wintering ground for thousands of Canada geese, offering an unparalleled opportunity to connect with nature just a short drive from the nation's capital.

Why Visit Merkle Wildlife Sanctuary

We often seek out destinations that offer a true escape, and Merkle Wildlife Sanctuary delivers precisely that. It's a place where the rhythmic honking of Canada geese fills the crisp autumn air, where deer graze peacefully in open fields, and where the quiet rustle of leaves accompanies your stroll through diverse habitats. The sanctuary is renowned for hosting the largest concentration of wintering Canada geese on the Chesapeake Bay's western shore, with numbers often exceeding 5,000 birds.

Beyond the spectacular avian displays, Merkle provides a vital sanctuary for a wide array of other wildlife, including red foxes, groundhogs, white-tailed deer, and a vibrant community of songbirds, hummingbirds, and ospreys during the warmer months. It's a living classroom, a serene escape, and a testament to dedicated conservation efforts. We find it to be an essential stop for anyone looking to experience Maryland's natural beauty firsthand.

The sanctuary's history is as compelling as its wildlife. Named after Edgar Merkle, a passionate conservationist who initiated a goose breeding program in the 1930s, the land was eventually sold and donated to the state, growing into the extensive refuge we enjoy today. This rich legacy of stewardship is evident in the well-maintained trails and the ongoing efforts to protect these precious habitats.

Who It's Best For

Merkle Wildlife Sanctuary is a truly versatile destination that appeals to a broad spectrum of visitors. We confidently recommend it for:

• **Birdwatchers and Nature Photographers:** With over 230 bird species reported, including thousands of Canada geese in winter, Merkle is a prime location for observing and photographing avian life. The observation platforms and diverse habitats offer ample opportunities.
• **Families with Children:** The easy-to-navigate trails, the chance to spot various animals, and the educational programs (available by arrangement at the visitor center) make it an engaging outing for kids. Picnic areas are also available for a relaxed family meal.
• **Hikers and Walkers:** Offering four distinct hiking trails ranging from easy to moderate, the sanctuary provides ample opportunities for a refreshing walk amidst nature.
• **Peace Seekers:** If you're looking to escape the hustle and bustle and immerse yourself in tranquility, the expansive natural setting of Merkle offers a perfect retreat.
• **Local History Enthusiasts:** The Frank Oslislo Visitor Center features interpretive displays about Edgar Merkle's conservation work and a history corner highlighting the War of 1812 on the Patuxent River and local American Indian heritage.

However, we note that pets are permitted on leash at Merkle Natural Resources Management Area, so it's also a great spot for those traveling with their furry companions, provided they are kept under control and waste is picked up.

Getting There & Parking

Understanding how to get to Merkle Wildlife Sanctuary is straightforward, though a car is essential for reaching this somewhat secluded natural gem. The sanctuary is located at 11704 Fenno Road, Upper Marlboro, MD 20772.

From Washington, D.C., we advise taking Exit 11 from I-495/95 onto Route 4 East (Pennsylvania Avenue) towards Upper Marlboro. Continue on Route 4 to Route 301 South, then turn left onto Croom Road (Route 382). Follow Croom Road, then turn left onto St. Thomas Church Road, which eventually becomes Fenno Road. You'll see signs for the sanctuary on your left.

If you're coming from Annapolis, take Route 50 West to Route 301 South, then follow the same directions from Route 301.

Parking at Merkle Wildlife Sanctuary is available in a gravel lot at the Frank Oslislo Visitor Center, as well as at various designated small lots along the Critical Area Driving Tour. The Visitor Center lot has approximately 18 spaces. There is a service charge of $2 per vehicle payable at the entrance, though day-use admission itself is free. We always recommend arriving earlier in the day, especially on weekends during peak migration season, to ensure you secure a spot and enjoy the tranquility before larger crowds.

Top Things to Do

When planning your visit, you'll find a wealth of engaging activities, making things to do at Merkle Wildlife Sanctuary abundant for all ages and interests. Our team has highlighted the must-do experiences:

Witness the Canada Goose Migration

The undisputed highlight of Merkle Wildlife Sanctuary is the incredible sight of thousands of Canada geese that winter here from October to March. The sanctuary was specifically established to protect these magnificent birds, and the sheer volume of geese is breathtaking. We recommend visiting during these cooler months for the most spectacular viewing opportunities. Observation platforms are strategically placed to offer excellent vantage points without disturbing the wildlife.

Explore the Merkle Wildlife Sanctuary Hiking Trails

For those eager to stretch their legs and delve deeper into the sanctuary's diverse ecosystems, the Merkle Wildlife Sanctuary hiking trails are a major draw. There are four primary trails, open to hikers only, that wind through upland forests, streams, ponds, and marshes.

• **Paw Paw Trail:** An easy, family-friendly 1.2-mile yellow-blazed loop that meanders past streams and ponds. Keep an eye out for the native paw paw trees.
• **Poplar Springs Trail:** A 3.0-mile easy to moderate red-blazed trail connecting forested areas. It passes Merkle's champion yellow poplar, standing 116 feet tall.
• **Mounds Trail:** A 2.3-mile moderate blue-blazed trail, this hilly route follows a ravine, offering views of Lookout Creek and featuring unique man-made "ha-has" mounds.
• **Lookout Creek Trail:** A flat, 0.9-mile white-blazed figure-eight trail accessed from the Critical Area Driving Tour, winding through forests and wetlands with views of Lookout Creek.

We advise wearing sturdy, waterproof hiking boots, especially if you plan to tackle the Mounds Trail or visit after rain, as some sections can be steep or wet.

Take the Critical Area Driving Tour

For a different perspective or for those with limited mobility, the Critical Area Driving Tour is an excellent option. This scenic route is open daily for driving, hiking, biking, and horseback riding. A specific section connecting Patuxent River Park to Merkle is open to cars only on Sundays from 10 a.m. to 3 p.m., offering a unique journey across a wooden trestle bridge with an observation platform over Mattaponi Creek.

Visit the Frank Oslislo Visitor Center

The Frank Oslislo Visitor Center serves as an educational hub, offering live animal exhibits (including turtles and snakes), interpretive displays about Edgar Merkle and the Canada geese, and informational exhibits on various environmental and wildlife topics. It also boasts a large bird feeder viewing area, complete with binoculars and field guides. As of 2026, the visitor center is open for viewing by reservation only; we recommend contacting merklewildlife.nrma@maryland.gov to schedule your visit in advance.

Birdwatching and Photography

Beyond the geese, Merkle is a birder's paradise. Ospreys nest near the Visitor Center in summer, and you can spot hummingbirds, finches, purple martins, herons, and various songbirds throughout the year. Bring your binoculars and camera, as the opportunities for stunning wildlife photography are endless. The diverse habitats, from open fields to dense woodlands and marshy areas, attract a wide variety of species.

Fishing

For angling enthusiasts, fishing is permitted in the Merkle ponds from April 1 to October 1. Check local regulations and ensure you have the necessary Maryland fishing licenses before casting your line.

These things to do at Merkle Wildlife Sanctuary provide a comprehensive experience, blending active exploration with peaceful observation.

Best Time to Visit

Our team has found that the best time to visit Merkle Wildlife Sanctuary largely depends on what you hope to experience, though certain seasons offer distinct advantages:

• **Fall (October - November):** This is a prime season, as the Canada geese begin arriving for the winter, and the fall foliage adds a beautiful backdrop to the landscape. The weather is typically mild and pleasant for hiking.
• **Winter (December - March):** Without a doubt, winter is the absolute best time to witness the spectacular Canada goose migration. Thousands upon thousands of geese blanket the fields and ponds, creating an unforgettable sight and sound. Dress warmly, as temperatures can be chilly.
• **Spring (April - May):** As the geese depart, other migratory birds arrive, and the sanctuary bursts with new life. Spring wildflowers bloom, and the forest trails are vibrant. Fishing season also opens in April.
• **Summer (June - September):** While the large goose concentrations are absent, summer still offers opportunities for birdwatching (ospreys, hummingbirds, songbirds) and enjoying the hiking trails. It's a quieter time, perfect for peaceful walks, though be prepared for warmer temperatures and potential insects.

The sanctuary grounds and trails are open daily from 7 a.m. to sunset year-round, except for major holidays. The Visitor Center operates by reservation only, so plan ahead if you wish to go inside.

Where to Stay Nearby

While Merkle Wildlife Sanctuary itself is a natural preserve, there are several comfortable options for Merkle Wildlife Sanctuary lodging in the surrounding areas, particularly in Upper Marlboro and nearby Largo. We recommend these for their convenience and amenities:

• **Comfort Inn Largo-Washington DC East:** Located in Upper Marlboro, this hotel is a popular choice for its comfort, cleanliness, and convenient access to local attractions. It offers modern amenities and a welcoming atmosphere.
• **Executive Inn & Suites Upper Marlboro:** For those seeking a more intimate stay with personalized service, this option in Marlboro Meadows provides a charming experience.
• **Residence Inn Largo Medical Center Drive:** A highly-rated choice offering great value with free WiFi, complimentary buffet breakfast, and free self-parking. Guests often praise its comfortable rooms and excellent service.
• **Homewood Suites by Hilton Largo/Washington, D.C.:** Another excellent option for families, known for its clean rooms, convenient location, and friendly staff.
• **Holiday Inn Express I-95 Capitol Beltway-Largo by IHG:** A reliable choice for travelers seeking consistent quality and amenities.

These hotels provide a comfortable base for exploring Merkle Wildlife Sanctuary and other attractions in Prince George's County. When considering Merkle Wildlife Sanctuary lodging, we suggest booking in advance, especially during peak seasons like the winter migration.

Sample 2-Day Itinerary

To help you maximize your visit, our team has crafted a sample 2-day itinerary for an enriching experience at Merkle Wildlife Sanctuary and its surroundings:

Day 1: Immersion in Merkle

• **Morning (7:00 AM - 12:00 PM):** Arrive early at Merkle Wildlife Sanctuary to take advantage of the quietest hours for wildlife viewing. Pay the $2 per vehicle entrance fee. Head straight to the observation platforms to witness the Canada geese (in season) and other waterfowl. Embark on one or two of the Merkle Wildlife Sanctuary hiking trails. We suggest starting with the Paw Paw Trail for an easy introduction, followed by the more challenging Mounds Trail for varied terrain and views.
• **Lunch (12:00 PM - 1:00 PM):** Enjoy a packed picnic lunch at one of the sanctuary's picnic areas near the Visitor Center.
• **Afternoon (1:00 PM - 4:00 PM):** If you've made a reservation, visit the Frank Oslislo Visitor Center to explore the live animal exhibits and interpretive displays. Spend time at the bird feeder viewing area with provided binoculars. Alternatively, take a leisurely drive along the Critical Area Driving Tour, enjoying the scenic overlooks and stopping for additional birding opportunities.
• **Evening:** Check into your chosen lodging in Upper Marlboro or Largo. Enjoy dinner at a local restaurant.

Day 2: Local Exploration & History

• **Morning (9:00 AM - 1:00 PM):** Explore other nearby attractions. For history buffs, a visit to Fort McHenry National Monument in Baltimore is a must-see, offering a deep dive into the War of 1812. Alternatively, immerse yourself in the charming history of Historic Annapolis & Naval Academy.
• **Lunch (1:00 PM - 2:00 PM):** Grab lunch in Baltimore or Annapolis, depending on your morning activity.
• **Afternoon (2:00 PM - 5:00 PM):** Continue your exploration. If in Baltimore, the National Aquarium offers an incredible marine experience. If you prefer more nature, consider a scenic drive towards Assateague Island (though a full visit requires more time). For a relaxed afternoon closer to Upper Marlboro, consider exploring Old Maryland Farm for family-friendly activities.
• **Evening:** Enjoy a final dinner in the area before heading home, or extend your trip to explore more of the Best places in Maryland.

FAQ Longtails

Merkle Wildlife Sanctuary camping

While Merkle Wildlife Sanctuary itself is primarily a day-use area, the Maryland DNR website indicates that camping is generally available. Specifically, there is a "White Oak canoe camp" accessible from the Critical Area Driving Tour. For traditional campgrounds, visitors typically look to nearby state parks or private Hipcamp listings in the broader Patuxent River area, such as Bald Eagle Farm on the Patuxent, which offers secluded sites with firepits and picnic tables. We recommend contacting the sanctuary directly at 443-510-9920 for the most current and specific information on any on-site camping opportunities or reservations.

things to do in Upper Marlboro

Beyond Merkle Wildlife Sanctuary, Upper Marlboro and its immediate vicinity offer several attractions and activities. You can visit Old Maryland Farm, attend events at the Show Place Arena, or enjoy Lake Presidential Golf Club. The town also hosts community events like the Marlboro Day Parade & Festival, typically held in mid-May or early June, featuring live entertainment, local vendors, and family fun. For those interested in history, the area has connections to the War of 1812.

Merkle Wildlife Sanctuary with kids

Merkle Wildlife Sanctuary is an excellent destination for families with kids. The easy hiking trails, such as the Paw Paw Trail, are manageable for younger walkers. Kids will love the chance to spot various wildlife, including deer, groundhogs, and especially the thousands of Canada geese during migration season. The Frank Oslislo Visitor Center, open by reservation, offers live animal exhibits and engaging interpretive displays that educate children about conservation. Picnic areas are also available for family meals. Remember that pets are allowed on leash, so your family dog can also join the adventure.

best hotels near Merkle Wildlife Sanctuary

When searching for the best hotels near Merkle Wildlife Sanctuary, we suggest focusing on Upper Marlboro and the Largo area for convenient access. Top recommendations include the Comfort Inn Largo-Washington DC East, Executive Inn & Suites Upper Marlboro, Residence Inn Largo Medical Center Drive, and Homewood Suites by Hilton Largo/Washington, D.C. These establishments consistently receive good reviews for their amenities, comfort, and proximity to the sanctuary and other local attractions. Booking in advance is always a good strategy, especially during peak travel times.

Merkle Wildlife Sanctuary tips

To make the most of your visit to Merkle Wildlife Sanctuary, our team offers these essential tips:

1. **Visit in Winter for Geese:** For the most impressive display of Canada geese, plan your trip between October and March.
2. **Arrive Early:** Early mornings offer the best wildlife viewing opportunities and fewer crowds.
3. **Check Visitor Center Hours:** The Frank Oslislo Visitor Center is open by reservation only; email merklewildlife.nrma@maryland.gov in advance to schedule your visit.
4. **Wear Appropriate Footwear:** Sturdy, waterproof hiking boots are recommended for the trails, which can be natural surface and sometimes steep or wet.
5. **Bring Binoculars and Camera:** You'll want them for birdwatching and capturing the stunning wildlife.
6. **Pack a Picnic:** Picnic tables are available, making it easy to enjoy a meal amidst nature.
7. **Leashed Pets Welcome:** Your canine companions are allowed on leash throughout the Merkle Natural Resources Management Area.
8. **Consider the Driving Tour:** For a relaxed experience or if mobility is a concern, the Critical Area Driving Tour offers scenic views. Remember the Sunday-only car access for the Selby's Landing section.
9. **Be Prepared for a Fee:** There is a $2 per vehicle service charge at the entrance.

where to stay near Merkle Wildlife Sanctuary

Finding comfortable accommodations near Merkle Wildlife Sanctuary is simple, with several options in Upper Marlboro and the neighboring town of Largo. We suggest looking into hotels like the Comfort Inn Largo-Washington DC East, Executive Inn & Suites Upper Marlboro, Residence Inn Largo Medical Center Drive, or Homewood Suites by Hilton Largo/Washington, D.C. These hotels offer a range of amenities, from complimentary breakfast to free WiFi, providing a convenient and pleasant stay after a day of exploring the sanctuary. These locations put you within easy driving distance of the sanctuary and other local attractions.

Our team's verdict is clear: Merkle Wildlife Sanctuary is a truly special place that offers a unique blend of natural beauty, abundant wildlife, and accessible outdoor activities. Whether you're a serious birder, a family seeking a nature escape, or simply looking for a peaceful hike, this Maryland gem delivers. Its role as a crucial wintering ground for Canada geese makes it a must-visit during the colder months, but its diverse ecosystems offer something to appreciate year-round. We highly recommend adding Merkle to your Plan Your US Trip itinerary for an authentic and enriching Maryland experience.

Last updated: 2026-07-06 by the Roam States team.