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Mountain biking trails

United States

Missouri

St. Charles County

Lost Valley Trail – Lost Valley Trail loop from Lost Valley Trail Parking

Routes

Mountain biking trails

United States

Missouri

St. Charles County

Lost Valley Trail – Lost Valley Trail loop from Lost Valley Trail Parking

Moderate

3.3

(17)

riders

Lost Valley Trail – Lost Valley Trail loop from Lost Valley Trail Parking

02:05

22.9km

280m

Mountain biking

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: May 12, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Weldon Spring Conservation Area

Waypoints

Start point

Parking

Get Directions

7.46 km

Spring

Highlight • Natural

At mile post 5, just a few feet down from the trail the spring runs right out of the mountain. Really cool

Tip by

8.18 km

A fun section. If you’re riding Clockwise there is a nice technical section twisting downhill through the trees leading up to the crossing. After the water you’ll have wet rubber and the rocks can be slick. Easier in the counter clockwise direction. Water is deeper in spring and summer.

Tip by

11.5 km

Lost Valley Trail

Highlight (Segment) • Trail

This is what I was looking for. Narrow singletrack that runs along the terrain. Often off camber with lots of gravel sized rocks mixed in with clay and organic soils. The surface has great grip even when it’s damp. When the organic percentage rises it gives more and slips under climbing loads. The climbs aren’t too steep and there was always enough roots and rocks to keep you interested. Many stream crossings at the draws that were well prepared. Even the switchback were awesome with native stones packed in the clay to give you confidence you won’t wash out a wheel. Awesome. Be aware as of 2 May 2025 between the 5.5 and 7 mile markers there were many trees crossing the trail knocked over from a terrific wind or 🌪️. This is the area closest to the Army site.

Tip by

19.2 km

Lost Valley Trail

Highlight (Segment) • Trail

An easy, wooded trail meandering through forests. This path interconnects with several others within the area.

Tip by

22.9 km

End point

Parking

Way Types & Surfaces

Way Types

22.9 km

< 100 m

Surfaces

22.9 km

< 100 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Weather

Today

Saturday 16 May

26°C

19°C

26 %

Additional weather tips

Max wind speed: 11.0 km/h

to get more detailed weather forecasts along your route

Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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Lost Valley Trail – Lost Valley Trail loop from Lost Valley Trail Parking

02:05h

22.9km

280m

Lost Valley Trail – Lost Valley Trail loop from Lost Valley Trail Parking

Spring

Stream crossing

Lost Valley Trail

Lost Valley Trail

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