🌤 Weather at Route 66 State Park by season
| Spring | Summer | Fall | Winter |
|---|---|---|---|
| 34–77 °F | 64–90 °F | 34–81 °F | 22–46 °F |
Each range runs from the coldest monthly average low to the warmest monthly average high in that season (1991-2020 climate normals), measured at St Louis Sprt Of S L Airport, 11 mi away, elevation 462 ft. Conditions at the park can differ from the station, especially where elevation differs — check a forecast before you go.
Route 66 State Park is a public state park in Missouri near Eureka in St. Louis County. Spanning 424 acres and established in 1997, this park offers a peaceful retreat into nature for visitors of all ages.
Quick Facts
| State | Missouri |
| Nearest City | Eureka |
| County | St. Louis |
| Park Size | 424 acres |
| Established | 1997 |
| Google Rating | ⭐ 4.4/5 (600 reviews) |
Location & Getting There
Route 66 State Park is located near Eureka, Missouri. The park’s coordinates are 38.5086, -90.6025.
Things to Do
Missouri state parks protect an impressive variety of Ozark landscapes — spring-fed rivers with crystal-clear water, dramatic shut-ins (narrow volcanic rock gorges), extensive cave systems, forested bluffs along the Ozark Trail, and managed prairies. Activities include hiking some of the Midwest’s most scenic trails, swimming and floating in cold, clear Ozark springs and rivers, fishing for trout in spring-fed streams, camping in forested river valleys, caving on guided tours, mountain biking, horseback riding, kayaking, and exploring Civil War and frontier-era historic sites. Missouri’s springs — including Big Spring and Alley Spring — are among the largest and most beautiful in the country.
Best Time to Visit
Missouri parks are a three-season destination with winter hiking as abonus. Spring (March–May) brings dogwood and redbud blooms, rushing waterfalls, and comfortable temperatures. Summer (June–August) is peak season for floating, swimming, and camping — the Current and Jacks Fork Rivers are iconic summer float trips. Fall (September–November) delivers excellent Ozark foliage peaking mid-October, with comfortable hiking weather. Winter offers peaceful trail experiences and is ideal for cave tours (caves maintain 56°F year-round). All Missouri state parks are free — no entrance fees or vehicle passes required.
Visitor Tips
All Missouri state parks are free to visit — no entrance fees or vehicle permits required. Camping fees are modest and vary by facility. Reservations are made through mostateparks.com. Cave tours at parks like Onondaga Cave, Meramec Caverns, and Ozark Caverns require separate tickets and often sell out on weekends — reserve in advance. Float trip parks along the Current and Jacks Fork Rivers get very busy on summer weekends. Cell service is limited in the Ozarks backcountry.
Explore More Missouri State Parks
Route 66 State Park is one of many outstanding state parks in Missouri. Discover more parks in our Best State Parks in Missouri guide, or use our Park Finder to search by activity, location, or features.
Wildlife & Nature
Route 66 SP — on the site of the former Times Beach, Missouri — a town evacuated and demolished in 1983 due to dioxin contamination. After a $200 million EPA cleanup, the land was transformed into a state park. The park’s Meramec River, forest, and trails support bald eagles, great blue herons, and white-tailed deer.
Nearby Attractions
Eureka — adjacent. St. Louis — 20 miles east. Lone Elk Park — adjacent. Castlewood SP — 10 miles north. Route 66 Roadside Park — nearby.
Keep exploring: The closest neighbors are Sappington Cemetery State Historic Site (a short drive away) and Castlewood State Park (a short drive away).
🐾 Dogs & Pets at Route 66 State Park
- Pets allowed? statewide rule
- Responsible pet owners and their pets are welcome in Missouri state parks and historic sites, with pets leashed and under control.
- Leash rule statewide rule
- Leash not longer than 10 feet required at all times; portable fences and shock collars do not satisfy the requirement.
- Beaches & swim areas statewide rule
- Pets are not allowed in public swimming areas or on beaches.
- Cabins & lodging statewide rule
- The 'Cabins for Canines' program opens about 30% of lodging units to dogs (max two dogs per unit) at roughly 15 participating parks including Lake of the Ozarks, Bennett Spring, Echo Bluff and Roaring River; per-dog per-night fee varies by unit type.
- Pet fees statewide rule
- No day-use pet fee; Cabins for Canines charges a per-dog, per-night lodging fee (varies by unit).
- Statewide exceptions statewide rule
- Maximum two dogs per campsite; pets not allowed inside any park building.
Are dogs allowed at Route 66 State Park?
Responsible pet owners and their pets are welcome in Missouri state parks and historic sites, with pets leashed and under control. Individual parks can post stricter rules — check signage on arrival.
Rules verified July 2026 via mostateparks.com. More: Missouri state parks guide · Dog rules in all 50 states compared
Park Location
Plan your gear for Route 66 State Park
From our editorial guides, matched to this park’s activities:
