Weldon Spring Conservation Area is located south of I-64, along Highway 94. It’s a mostly forested area with pasture, cropland, and some wetlands and glades. Facilities/features: boat ramp (on the river), hiking trails, fishing lakes and ponds (51 acres total), and a permanent stream (Missouri River).
The Weldon Spring Hollow Natural Area features 385 acres of upland and bottomland forest, and rugged river breaks topography. Other features include limestone cliffs and bluff escarpments.
Katy Trail State Park a hiking, bicycle trail, passes through along the Missouri River.
Lewis – hiking, 8.20 miles (popular). The Lewis and the Clark Trails are shown on the right half of the map, north of the Missouri River. The Lewis Trail is indicated by a blue dashed line, and the Clark Trail is shown as a green dashed line.
Clark – hiking, 5.30 miles
Lewis Trail & Clark Trail gravel parking lot is located along Hwy 94 (east side) approximately 3 miles south of I-64 and about 1 mile south of Francis Howell High School. They share (approximately) the first 3 miles and then the Lewis Trail takes off on a separate path. The trails converge again for the final mile or so. The trails follow the Missouri River bluffs and provide spectacular river views high above the Missouri. The trails are hilly and rocky. 7400 Missouri 94, St. Charles MO 63304
Lost Valley – hiking & biking, 11 miles (popular) — Lost Valley info GORC
Lost Valley Trail is located approximately 6 miles west of the I-64/Hwy 40 intersection with Hwy 94. Take Hwy 94 west toward New Melle and Defiance. Gravel parking lot for Lost Valley trail is located about 1/4 mile past the St. Charles Law Enforcement Training Center on the right-hand side of Hwy 94. Lost Valley is fairly easy with no strenuous hills. It’s mostly gravel and packed clay. The Femme Osage Creek runs parallel to the trail for a good distance. You see the creek again and cross it two or three times in the final two miles. 1795 Highway 94 South, St. Charles MO 63304