Grand Lake St. Marys State Park
Grand Lake St. Marys State Park centers on Ohio’s largest inland lake, offering boating, fishing, swimming, and scenic shoreline access. The park’s flat terrain, wildlife viewing, and picnic areas make it a popular destination for relaxed day trips and water recreation.
Free
Visiting with Dogs
Dogs allowed in designated areas; keep leashed and under control. Clean up after pets. Check park rules for restrictions.
Visitor Tips & Reviews
What Visitors Say
Visitors love the scenic lake views, boating, fishing, sunsets, birdwatching, and peaceful camping. Many mention family-friendly recreation, open spaces, and a relaxing getaway atmosphere.
Tips from Visitors
- Check weather before boating or fishing trips.
- Bring sunscreen and insect repellent in warmer months.
- Use designated launch areas for boats and kayaks.
- Pack drinking water, especially during hot summer days.
- Stay alert for changing water conditions and algae advisories.
Best Time to Visit
The best time to visit Grand Lake St. Marys State Park is late spring through early fall, when boating, swimming, and fishing are at their best. Migratory birds also make spring and fall especially rewarding for wildlife viewing.
Amenities
Nearby Attractions
Explore these attractions near Grand Lake St. Marys State Park:
- Grand Lake St. Marys State Park MarinaA hub for boating access, rentals, and lake activity on the south shore.1.2 miles away
- St. Marys Community Public Library and Downtown St. MarysA small-town downtown area with local dining, shops, and community events near the park.2.5 miles away
- Kettlersville Wildlife AreaA nearby public wildlife area offering additional opportunities for birdwatching and nature observation.14.8 miles away
Things to Do at Grand Lake St. Marys State Park
Camping at Grand Lake St. Marys State Park
Tent and RV camping available with electric hookups, restrooms, showers, fire rings, and picnic tables; reservations recommended seasonally.
Hiking Trails
Grand Lake St. Marys State Park offers easy, relaxed day hiking with mostly flat, well-maintained trails and scenic views of the lake, wetlands, and open parkland. Hikers often enjoy the peaceful setting, birdwatching, and family-friendly routes rather than challenging terrain. It’s a good choice for a casual walk, short nature outing, or combining hiking with fishing, picnicking, and wildlife viewing.
Lakeview Trail
easyA scenic loop with open views of Grand Lake St. Marys, wetlands, and shoreline habitat. Good for a relaxed walk and birdwatching.
Marina Trail
easyA short, accessible trail near the marina area with views of the water and park facilities. Best for a quick outing or family stroll.
Shoreline Connector Trail
easyA longer connector route along the lake edge and through lightly wooded sections. Offers a mix of water views and quiet natural areas.
Wetland Boardwalk Trail
easyA short boardwalk-style trail through wetland habitat, ideal for wildlife viewing and photography. Flat terrain makes it suitable for most visitors.
Directions
From St. Marys, follow Edgewater Drive to the park on the lake’s south shore. From I-75, take Exit 111 and drive west on US-33, then follow local signs to St. Marys and the park.
Contact & Info
Frequently Asked Questions
What activities are popular at Grand Lake St. Marys State Park?
Visitors commonly come for boating, fishing, swimming, picnicking, hiking, and camping. Many reviews mention the lake views and easy access to water activities as the main draw.
Is the water good for swimming and boating?
Boating is a major attraction, and swimming is available in designated areas when conditions allow. Some visitors note that water quality can vary, so it’s smart to check current advisories before planning a swim.
Can I fish at the park?
Yes. Fishing is one of the park’s most popular activities, especially from shore or by boat. Anglers often target bass, crappie, bluegill, and catfish, depending on the season.
Are there camping facilities at Grand Lake St. Marys State Park?
Yes, the park offers camping options, including sites for tents and RVs. Campers often mention the convenience of being close to the lake and park amenities.
Is the park family-friendly?
Yes. Families often enjoy the picnic areas, open spaces, playground-style recreation, and calm lake activities. Reviews frequently describe it as a relaxed place for a day trip or weekend outing.
What should I know before visiting?
Check weather, lake conditions, and any water advisories before you go. Visitors often recommend bringing bug spray, sunscreen, and supplies, since some areas can be breezy, sunny, or lightly developed.
Don’t Forget the Essentials
Essential camping & hiking gear we recommend to make your park trip easier and more comfortable.
View Gear Checklist →