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SaveThe name comes from the bootleggers who once made use of the area, getting lost among the numerous hollows. It was also near the site of an ammunition works and uranium processing plant which necessitated the cleanup that lies under the large mound on Hwy. 94. Now, the trail is a 10.5 mile loop with a mixture of double and singletrack punctuated with old homesteads, rock formations, natural springs, and a waterfall crossing. This is a very scenic and enjoyable mountain bike experience.
The gravel/doubletrack sections are fairly flat. The singletrack sections are super-flowy with punchy rock obstacles that will reward you with great views and better riding, the trail can get technical in spots and is now a much longer ride due to the increased singletrack. Be advised that this 10.5 mi loop will take some riders 2 hours to navigate due to the amount of singletrack and the difficulty of the rocky sections. There is a central fire road that cuts the loop almost in half which can be used to shorten or lengthen your ride.
Trail surface varies from dirt to rock throughout the trail, and drains very well, except in the flats of the lower creek bottom.
The trail is open until 10 pm, so it's a good place to ride at night.
The gravel/doubletrack sections are fairly flat. The singletrack sections are super-flowy with punchy rock obstacles that will reward you with great views and better riding, the trail can get technical in spots and is now a much longer ride due to the increased singletrack. Be advised that this 10.5 mi loop will take some riders 2 hours to navigate due to the amount of singletrack and the difficulty of the rocky sections. There is a central fire road that cuts the loop almost in half which can be used to shorten or lengthen your ride.
Trail surface varies from dirt to rock throughout the trail, and drains very well, except in the flats of the lower creek bottom.
The trail is open until 10 pm, so it's a good place to ride at night.
source: Lost Valley
Primary Trail Type: Cross-Country
Land Status: Conservation Reserve

Access Info:
From the Highway 40/94 interchange: Take Highway 94 South approximately 5 miles. The trailhead parking lot will be on your right hand side. It is not very well identified as "Lost Valley". A good landmark is the shooting range at the top of a hill on the right hand side of Hwy 94. When you descend that hill the parking lot will be on your right hand side, at the very bottom.
Links
Activities Click to view
- Mountain Bike
10 trails
- Hike
14 trails
- Trail Running
14 trails
Region Details
- 6
- 1
- 3
Region Status
Caution as of Mar 28, 2025Stats
- Avg Trail Rating
- Trails (view details)
- 14
- Trails Mountain Bike
- 10
- Trails Hike
- 14
- Trails Trail Running
- 14
- Total Distance
- 40 miles
- Total Descent
- 2,742 ft
- Total Vertical
- 293 ft
- Highest Trailhead
- 755 ft
- Reports
- 130
- Photos
- 25
- Ridden Counter
- 2,573
Popular Lost Valley Mountain Biking Trails
Lost Valley Mountain Bike Routes
title | rating | distance |
---|---|---|
St. Charles County Trifecta | 50 miles | |
Lost Valley Out and Back | 20 miles | |
Femme Osage Ridge Road/Gravel Route | 37 miles | |
6 mile Lost Valley All-Mountain Ride | popular ridelog | 6 miles |
14 mile Lost Valley All-Mountain Ride | popular ridelog | 14 miles |
10 mile Lost Valley Ride | popular ridelog | 10 miles |
12 mile Lost Valley Ride | popular ridelog | 12 miles |
16 mile Lost Valley Ride | popular ridelog | 16 miles |
17 mile Lost Valley Ride | popular ridelog | 17 miles |
12 mile Lost Valley Ride | popular ridelog | 12 miles |
Photos of Lost Valley Mountain Bike
trail: Lost Valley Trail
19 |
Oct 24, 2024 @ 8:37am
Oct 24, 2024
trail: Lost Valley Trail
140 |
Apr 23, 2022 @ 2:25pm
Apr 23, 2022
trail: Lost Valley Trail
140 |
Apr 23, 2022 @ 2:25pm
Apr 23, 2022
trail: Lost Valley Trail
128 |
Apr 23, 2022 @ 2:24pm
Apr 23, 2022
trail: Scenic Overlook Trail
20 |
Mar 15, 2022 @ 9:15am
Mar 15, 2022
trail: Scenic Overlook Trail
22 |
Mar 15, 2022 @ 9:15am
Mar 15, 2022
trail: Lost Valley Trail
149 |
Mar 3, 2022 @ 9:33am
Mar 3, 2022
trail: Lost Valley Trail
133 |
Dec 2, 2021 @ 7:57pm
Dec 2, 2021Videos of Lost Valley Mountain Bike

trail: Lost Valley Trail
14:58 |
8 |
Apr 4, 2025 , St. Charles

trail: Lost Valley Trail
44:01 |
355 |
Oct 5, 2023 , St. Charles
youtuber

trail: Lost Valley Trail
8:10 |
937 |
Oct 29, 2021 , St. Charles
Recent Trail Reports
status | trail | date | condition | info | user |
---|---|---|---|---|---|
Lost Valley Connector | Mar 28, 2025 @ 11:00am Mar 28, 2025 | Ideal | cubuffs85 | ||
Lost Valley Trail | Mar 28, 2025 @ 11:00am Mar 28, 2025 | Variable | cubuffs85 | ||
Lost Valley Cut-Off | Mar 30, 2024 @ 7:01am Mar 30, 2024 | Ideal | Deereman01 | ||
Hamburg Connector | Mar 30, 2024 @ 7:01am Mar 30, 2024 | Ideal | Deereman01 | ||
Hamburg/Lost Valley Connector | Mar 16, 2024 @ 7:19am Mar 16, 2024 | Ideal | Candyj | ||
Scenic Overlook Trail | Aug 18, 2023 @ 5:30am Aug 18, 2023 | Dry | iDj67Kyi | ||
Monarch Chesterfield Levee | May 22, 2023 @ 2:07am May 22, 2023 | Ideal | kevin06vino | ||
Monarch Chesterfield Levee (West) | Jan 1, 2023 @ 10:07am Jan 1, 2023 | Wet | cyclesteve99 | ||
Hamburg Trail | May 14, 2022 @ 5:09am May 14, 2022 | Wet | CavRecon | ||
Hamburg Trail | Apr 12, 2022 @ 7:04am Apr 12, 2022 | Wet | bj341 |
Activity Feed
username | action | type | title | date |
---|---|---|---|---|
geostar | add | video | activity #69003469 | Apr 4, 2025 @ 4:21pm Apr 4, 2025 |
cubuffs85 | add | report | activity #68591441 and 1 more | Mar 28, 2025 @ 5:16pm Mar 28, 2025 |
rmhchs | add | report | activity #68084431 | Mar 20, 2025 @ 8:25am Mar 20, 2025 |
Pieper17 | wishlist | trail | activity #61624062 | Nov 11, 2024 @ 1:12pm Nov 11, 2024 |
300lbmtnbiker | add | photo | activity #60866522 | Oct 24, 2024 @ 8:37am Oct 24, 2024 |
Recent Comments
username | type | title | comment | date |
---|---|---|---|---|
trail | CCW is most fun for me. Gets most of the rough... | Aug 3, 2023 @ 10:50am Aug 3, 2023 | ||
trail | Look | Jul 9, 2023 @ 5:56am Jul 9, 2023 | ||
trail | The single track is quite fun but there’s a... | May 5, 2023 @ 4:29am May 5, 2023 | ||
trail | I rode CCW, but found myself doubling back for... | Apr 27, 2022 @ 8:19pm Apr 27, 2022 | ||
trail | Natural spring located at ~0.6 mile mark. Look... | Mar 12, 2021 @ 10:13am Mar 12, 2021 |
Nearby Areas
name | distance | ||||
---|---|---|---|---|---|
Broemmelsiek Park | 2 | 3.9 km | |||
Matson Hill Park | 5 | 6 | 4 | 4.8 km | |
Klondike Park | 2 | 6 | 3 | 8.1 km | |
River's Edge Park | 1 | 8.9 km | |||
Quail Ridge Park | 4 | 5 | 9.3 km |
Activity Type Stats
activitytype | trails | distance | descent | descent distance | total vertical | rating | global rank | state rank | photos | reports | routes | ridelogs |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Mountain Bike | 10 | 31 miles | 1,647 ft | 11 miles | 292 ft | #2,628 | #1,382 | 24 | 128 | 3 | 10,944 | |
Hike | 14 | 40 miles | 2,743 ft | 15 miles | 292 ft | #2,053 | #1,238 | 1 | 130 | 192 | ||
Trail Running | 14 | 40 miles | 2,743 ft | 15 miles | 292 ft | #2,056 | #1,236 | 130 | 208 |
- By pilznr
GORC & contributors
- Admins: GORC
- #10407 - 7,978 views
- lost valley activity log | embed map of Lost Valley mountain bike trails | lost valley mountain biking points of interest
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