Castlewood State Park wilderness guide
State Park · MO

Castlewood State Park

Castlewood State Park offers extensive hiking, mountain biking, and scenic river access on the Meramec River within the St. Louis metropolitan area, making it a popular outdoor destination with rugged bluffs and forests.

State Park18374+ Trails

Designation

State Park

Total Wilderness Area

1837

Elevation / Terrain

Diverse Wilderness

Field Editorial Guide

About Castlewood State Park

Castlewood State Park offers extensive hiking, mountain biking, and scenic river access on the Meramec River within the St. Louis metropolitan area, making it a popular outdoor destination with rugged bluffs and forests.

Wilderness Landscape & Natural Heritage

Located in St. Louis County, Missouri, Castlewood State Park spans over 1,800 acres along the Meramec River. The park features steep sandstone bluffs, wooded hills, and river access points that attract visitors for a variety of outdoor activities. The park's diverse landscape supports oak-hickory forests, mixed woodlands, and riparian habitats that provide shelter for deer, wild turkeys, and numerous bird species. Historically, the land was used for agriculture and later developed into a recreational area, officially established as a state park in 1974. Castlewood is especially recognized for its rugged terrain, which challenges mountain bikers and hikers alike on more than 25 miles of multi-use trails. The park also offers fishing opportunities in the Meramec River, as well as seasonal swimming at favored river spots. Landmarks include the high bluffs overlooking the river, scenic overlooks such as Round Mountain, and remnants of old rock quarries. Its proximity to the St. Louis metropolitan area makes it one of the more accessible natural getaway locations in eastern Missouri. The park provides an engaging outdoor experience with well-marked trails, picnic areas, and ample opportunities for wildlife viewing. The blend of river, forest, and bluff landscapes contributes to its appeal for both casual visitors and outdoor enthusiasts seeking adventure near the city.

Field Guide · State Park
Adventure Destinations

Notable Destinations Near Castlewood State Park

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

Key Wilderness Highlights

✦ Round Mountain Scenic Overlook with panoramic views of the Meramec River valley✦ Diverse oak-hickory forest ecosystem supporting abundant wildlife✦ Extensive mountain biking trails ranging from beginner to expert✦ Meramec River access points for fishing, swimming, and paddling
Wilderness Recreation

Outdoor Adventures in Castlewood State Park

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

Park Recreation

Hiking

Available in Castlewood State Park
Park Recreation

Mountain Biking

Available in Castlewood State Park
Park Recreation

Fishing

Available in Castlewood State Park
Park Recreation

Wildlife Viewing

Available in Castlewood State Park
Park Recreation

Swimming

Available in Castlewood State Park
Park Recreation

Picnicking

Available in Castlewood State Park
Park Recreation

Photography

Available in Castlewood 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 Castlewood State Park.

Passes & Fees

Entrance Requirements & Interagency Passes

Free day-use entry with no permits or fees required.

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).
Adventure Basecamps

Gateway Towns Near Castlewood State Park

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

Eureka, Missouri
⌖ 1.74 miles
Gateway Basecamp

Eureka, Missouri

Eureka offers easy access to hiking, paddling, and mountain biking amid scenic parks and the Meramec River. It’s a convenient basecamp for families and outdoor lovers exploring Missouri’s Ozark edge.

Spring through Fall
Explore Town
Wildwood, Missouri
⌖ 4.64 miles
Gateway Basecamp

Wildwood, Missouri

Wildwood, Missouri, offers a quiet outdoor escape with miles of hiking, biking, and paddling trails set in expansive natural areas. Perfect for nature lovers looking to explore forests, rivers, and wildlife just outside St. Louis.

Spring through Fall
Explore Town
High Ridge, Missouri
⌖ 5.37 miles
Gateway Basecamp

High Ridge, Missouri

High Ridge, Missouri, is a peaceful town offering easy access to hiking, biking, fishing, and camping amid the scenic landscapes of the Ozarks foothills. Ideal for travelers seeking a quiet spot to explore nearby wilderness areas and wildlife preserves.

Spring through Fall
Explore Town
Ballwin, Missouri
⌖ 6.12 miles
Gateway Basecamp

Ballwin, Missouri

Ballwin offers easy access to outdoor fun with paved biking trails, peaceful hiking spots, and paddling on the Meramec River. Its parks are perfect for families looking to picnic, fish, or watch birds during spring through fall.

Spring through Fall
Explore Town
Valley Park, Missouri
⌖ 6.22 miles
Gateway Basecamp

Valley Park, Missouri

Valley Park, Missouri, is a friendly town by the Meramec River known for hiking, paddling, and biking adventures. With nearby parks and river access, it’s a great spot for outdoor lovers seeking scenic trails and water fun from spring through fall.

Spring through Fall
Explore Town
Manchester, Missouri
⌖ 6.84 miles
Gateway Basecamp

Manchester, Missouri

Manchester, Missouri is a quiet town offering easy access to parks, trails, and green spaces perfect for family hiking, biking, and picnicking. It’s an ideal spot to enjoy peaceful outdoor time within a suburban setting.

Spring through Fall
Explore Town
Expert-Led Wilderness Expeditions

Guided Experiences in Castlewood State Park

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

Pour, Blend, Bond: A Hands-On Scent Workshop for Groups in Chesterfield
ADVEXPEDITION
Chesterfield, Missouri
WorkshopADV Bookable

Pour, Blend, Bond: A Hands-On Scent Workshop for Groups in Chesterfield

A 60-minute, instructor-led session in Chesterfield where parties of 10–30 explore 100+ fragrances, blend a signature scent and pour it into a personalized product — useful for planners organizing celebrations, team outings, or group nights out.

WorkshopPT2HCertified Outfitter
Bookable OnlineBook Trip
Elsah & Principia: A Quiet, Well‑Preserved Step Back into Midwestern History
ADVEXPEDITION
St. Louis, Missouri
History TourADV Bookable

Elsah & Principia: A Quiet, Well‑Preserved Step Back into Midwestern History

A guided, 7-hour history tour from Meramec Campus & Flo Valley that visits Elsah’s National Register village, Bernard Maybeck’s Principia College, and lunch and shopping at Josephine’s Tea Room—the essential primer for visitors focused on architecture, local history, and relaxed small‑town hospitality.

History TourPT2HCertified Outfitter
Bookable OnlineBook Trip