St. Marys State Park wilderness guide
State Park · Ohio

St. Marys State Park

St. Marys State Park offers scenic woodlands, diverse wildlife, and access to the St. Marys River, providing visitors a place for hiking, fishing, and camping in western Ohio.

State Park1834+ Trails

Designation

State Park

Total Wilderness Area

183

Elevation / Terrain

Diverse Wilderness

Field Editorial Guide

About St. Marys State Park

St. Marys State Park offers scenic woodlands, diverse wildlife, and access to the St. Marys River, providing visitors a place for hiking, fishing, and camping in western Ohio.

Wilderness Landscape & Natural Heritage

St. Marys State Park is located in Auglaize County, Ohio, along the banks of the St. Marys River. Encompassing over 180 acres of primarily forested land and river wetlands, the park features a mix of floodplain hardwood forests, open meadows, and riparian ecosystems. The St. Marys River, a major tributary to the Maumee River, runs through the park and is a focal point for fishing and wildlife observation. The park’s landscape reflects much of the natural environment typical of northwestern Ohio, supporting species such as white-tailed deer, beaver, various songbirds, and occasional waterfowl visitors. Originally settled in the 19th century, the area served as a location for river trade and farming before its establishment as a state park focused on outdoor recreation and habitat preservation. Visitors commonly enjoy hiking along marked trails that wind through mature forests and streamside environments. Fishing is popular along designated river access points, particularly for warm-water species. The park also has multiple picnic areas and a campground offering a blend of modern and rustic camping opportunities. Seasonal activities include bird watching in spring and fall migratory periods and cross-country skiing during winter months. St. Marys State Park holds value not only as a recreation destination but also as an important green space protecting river corridor habitats in a predominantly agricultural region. Its relatively small size makes it accessible for day visits while still providing opportunities to experience Ohio’s native flora and fauna.

Field Guide · State Park
Adventure Destinations

Notable Destinations Near St. Marys State Park

Scenic viewpoints, outdoor landmarks, and notable points of interest within 60 miles.

Key Wilderness Highlights

✦ St. Marys River fishing access points with scenic riparian views✦ Floodplain hardwood forest ecosystem with diverse birdwatching opportunities✦ Historic river trade site remnants integrated into park educational signage✦ Quiet backcountry trails offering seasonal wildlife spotting
Wilderness Recreation

Outdoor Adventures in St. Marys State Park

Explore curated guides for top outdoor sports, trail networks, and wilderness activities.

Park Recreation

Hiking

Available in St. Marys State Park
Park Recreation

Camping

Available in St. Marys State Park
Park Recreation

Wildlife Viewing

Available in St. Marys State Park
Park Recreation

Fishing

Available in St. Marys State Park
Park Recreation

Picnicking

Available in St. Marys State Park
Park Recreation

Bird Watching

Available in St. Marys State Park
Park Recreation

Photography

Available in St. Marys State Park
Park Recreation

Cross-Country Skiing

Available in St. Marys State Park
The Ranger Station

Visitor Logistics & Essential Planning

Everything you need to know about entrance passes, seasons, visitor centers, road transit, and wildlife safety in St. Marys State Park.

Passes & Fees

Entrance Requirements & Interagency Passes

No entrance fee; camping fees apply. Ohio State Park Pass may be required for some amenities.

Wilderness Checklist

Carry paper topographic map & compass in remote zones.
Store all food and scented items in approved bear canisters.
Check wildfire / smoke advisories before backcountry departure.
Pack out everything you pack in (Leave No Trace).
Wilderness Stays

Camping & Overnight Stays in St. Marys State Park

Frontcountry developed campgrounds, backcountry wilderness permit guidelines, and starry-night camping advice.

St. Marys Campground

A campground located near the river with access to water and electric hookups, picnic tables, and restrooms.

River Edge Primitive Campsites

Few rustic sites along the river offering a more secluded camping experience for backpackers and small groups.

Adventure Basecamps

Gateway Towns Near St. Marys State Park

Stay, dine, and gear up in these mountain towns and scenic basecamps surrounding the park.

St. Marys, Ohio
⌖ 0.59 miles
Gateway Basecamp

St. Marys, Ohio

St. Marys, Ohio is a quiet town perfect for paddling, fishing, and cycling in a calm outdoor setting. With rivers and parks nearby, it’s an ideal stop for visitors seeking relaxed nature adventures away from crowds.

Spring through Fall
Explore Town
New Bremen, Ohio
⌖ 7.77 miles
Gateway Basecamp

New Bremen, Ohio

New Bremen, Ohio offers a quiet, authentic outdoor experience with gentle hiking, biking, fishing, and birding amid charming rural landscapes and historic small-town vibes.

Spring through Fall
Explore Town
Celina, Ohio
⌖ 9.22 miles
Gateway Basecamp

Celina, Ohio

Celina, Ohio, on the shores of Grand Lake St. Marys, is a lakeside town offering boating, fishing, biking, and bird watching. It’s a peaceful spot with ample outdoor recreation, especially enjoyable from late spring to early fall.

Late Spring through Early Fall
Explore Town
Wapakoneta, Ohio
⌖ 10.60 miles
Gateway Basecamp

Wapakoneta, Ohio

Wapakoneta offers outdoor lovers easygoing hiking, biking, paddling, and birding opportunities amid Ohio’s gentle rivers and forests. This approachable small town is a great base for peaceful nature breaks and water adventures.

Spring through Fall
Explore Town
Spencerville, Ohio
⌖ 11.18 miles
Gateway Basecamp

Spencerville, Ohio

Spencerville, Ohio is a peaceful rural town perfect for paddling, cycling, and easy hiking amidst Ohio’s farmland and waterways. Its quiet charm and nearby state parks create an inviting outdoor escape.

Spring through Fall
Explore Town
Elida, Ohio
⌖ 19.28 miles
Gateway Basecamp

Elida, Ohio

Elida offers a peaceful rural setting with easy access to gentle hiking, biking, and paddling trails. Ideal for outdoor lovers looking for quiet country adventures close to nature from spring through fall.

Spring through Fall
Explore Town
Expert-Led Wilderness Expeditions

Guided Experiences in St. Marys State Park

Explore scenic backcountry routes and epic wilderness adventures with certified local mountain guides, naturalists, and outfitters.

An Hour on Grand Lake: Paddle, Snack, Repeat
ADVEXPEDITION
Celina, Ohio
SUPADV Bookable

An Hour on Grand Lake: Paddle, Snack, Repeat

One-hour paddle-board rentals on Grand Lake from Helton Lodge Boat Rental LLC — a simple way to add quiet, water-level views to your lake day and know exactly what to bring.

SUPPT2HCertified Outfitter
Bookable OnlineBook Trip
Grand Lake by StarCraft: A 21‑ft Pontoon Day from Celina, Ohio
ADVEXPEDITION
Celina, Ohio
Boat RentalADV Bookable

Grand Lake by StarCraft: A 21‑ft Pontoon Day from Celina, Ohio

Half‑day (4 hr) and full‑day (8 hr) rentals aboard a 2017 21 ft StarCraft pontoon with a 70 HP Suzuki motor — this guide explains what to expect, what to bring, and how the outing flows on Grand Lake.

Boat RentalPT2HCertified Outfitter
Bookable OnlineBook Trip