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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
google parking directions plan a road trip here 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.
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Trail info last updated
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 Aug 15, 2026
Stats
- Avg Trail Rating
- Trails (view details)
- 14
- Trails Mountain Bike
- 10
- Trails Gravel Bike
- 7
- Trails Adaptive Bike
- 2
- Trails Hike
- 14
- Trails Trail Running
- 14
- Total Distance
- 40 miles
- Total Descent
- 3,188 ft
- Total Vertical
- 293 ft
- Highest Trailhead
- 755 ft
- Reports
- 150
- Photos
- 34
- Completed Counter
- 3,001
Popular Lost Valley Mountain Biking Trails
• 100 ★ 4.6 • 11 miles • 1,040 ft • 495 •
Highly rated popular blue difficulty singletrack. This mountain bike primary trail and has a moderate overall physical rating with a 1,040 ft blue climb. On average it takes 1 hour10 minutes to complete this trail.
• 100 ★ 3.0 • 1,227 ft • 17 ft • 299 •
Popular blue difficulty singletrack. This mountain bike primary trail can be used both directions and has a hard overall physical rating with a 17 ft blue climb. On average it takes minutes to complete this trail.
• 65 ★ 3.0 • 1 mile • 217 ft • 282 •
Moderately popular white difficulty doubletrack. This multi-use trail can be used both directions and has a moderate overall physical rating with a 217 ft blue climb. Trail visibility is always easy to follow. On average it takes 9 minutes to complete this trail.
• 95 ★ 3.0 • 4 miles • 215 ft • 203 •
Popular white difficulty gravel path. This multi-use trail can be used both directions and has a easy overall physical rating with a 215 ft green climb. On average it takes 20 minutes to complete this trail.
• 95 ★ 0.0 • 5 miles • 635 ft • 182 •
Fresh paved connector from the Katy Trail to the unpaved Hamburg Trail. Starts out by the creek with some bridges, with a sometimes stinky bypass of the water treatment plant.
• 95 ★ 0.0 • 471 ft • 4 ft • 173 •
Connects Hamburg and Katy trails to the main Lost Valley parking lot.
• 95 ★ 0.0 • 3 miles • 28 ft • 155 •
The original Monarch Chesterfield Levee Trail provides a west connector now that the new bridge crossing loops are in.
Lost Valley Mountain Bike Routes
★ 4.0 • 50 miles • 2,969 ft • 12 • Out & Back •
Also known as the St. Charles County Epic, this ride uses the Katy and Hamburg Trails to access 3 popular...
★ 1.0 • 20 miles • 1,625 ft • 3 • Out & Back •
Out and back on Lost Valley trail from the Mound. Max singletrack with probably minimum doubletrack.
37 miles • 1,221 ft • 0 • Loop •
Great ride from the mound. Several good hills. Includes time on KATY trail
• 19 miles • 221 ft • 5 •
• 23 miles • 1,978 ft • 7 •
• 30 miles • 1,861 ft • 5 •
Photos of Lost Valley Mountain Bike
Videos of Lost Valley Mountain Bike
Recent Trail Reports
| status | trail | date | condition | info | user |
|---|---|---|---|---|---|
| Lost Valley Trail | Aug 15, 2026 @ 11:44am (America/Chicago) Aug 15, 2026 | Variable | ohdirka | ||
| Lost Valley Connector | Jul 25, 2026 @ 5:36pm (America/Indiana/Vincennes) Jul 25, 2026 | Ideal | foysr | ||
| Lost Valley Cut-Off | Oct 20, 2025 @ 11:24am (America/Indiana/Vincennes) Oct 20, 2025 | Ideal | Bmhingst | ||
| 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 |
|---|---|---|---|---|
| 2jhsAB | ridden | trail | activity #105251177 and 1 more | Oct 4, 2026 @ 6:57pm Oct 4, 2026 |
| selceeus | wishlist | route | activity #104835925 | Sep 29, 2026 @ 5:56am Sep 29, 2026 |
| jjmilio | wishlist | trail | activity #104009937 | Sep 17, 2026 @ 3:24pm Sep 17, 2026 |
| Mark511 | add | photo | activity #102169563 and 2 more | Aug 23, 2026 @ 10:55am Aug 23, 2026 |
| Mark511 | comment | trail | activity #102155207 | Aug 23, 2026 @ 8:37am Aug 23, 2026 |
Recent Comments
| username | type | title | comment | date |
|---|---|---|---|---|
| trail | @biggbird23 i ride a 1x11 pedal bike on these... | Aug 23, 2026 @ 8:37am Aug 23, 2026 | ||
| trail | H.A.R.D. The distance and terrain combine to... | Aug 22, 2026 @ 2:35pm Aug 22, 2026 | ||
| trail | Rode CW. Fairly challenging trail with several... | Jun 12, 2026 @ 8:15am Jun 12, 2026 | ||
| 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 |
Nearby Areas
| name | distance | ||||
|---|---|---|---|---|---|
| Broemmelsiek Park | 2 | 3.9 km | |||
| Missouri Bluffs | 4 | 3 | 4.2 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 |
Activity Type Stats
| activitytype | trails | distance | descent | descent distance | total vertical | rating | global rank | state rank | photos | reports | routes | activity logs |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mountain Bike | 10 | 31 miles | 2,093 ft | 10 miles | 292 ft | #5,521 | #24 | 29 | 148 | 3 | 12,461 | |
| Gravel Bike | 7 | 20 miles | 932 ft | 7 miles | 292 ft | #3,633 | #1,658 | 48 | 1 | 441 | ||
| Adaptive Bike | 2 | 2,595 ft | 26 ft | 1,719 ft | 171 ft | #3,645 | #1,662 | 12 | ||||
| Hike | 14 | 40 miles | 3,189 ft | 14 miles | 292 ft | #6,314 | #11 | 3 | 150 | 249 | ||
| Trail Running | 14 | 40 miles | 3,189 ft | 14 miles | 292 ft | #5,671 | #10 | 150 | 261 |
Frequently Asked Questions
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What are the highest rated mountain biking trails in Lost Valley?
The highest rated mountain biking trails in Lost Valley are:
- Lost Valley Trail (4.3/5)
- Monarch Chesterfield Levee (3.8/5)
- Lost Valley Cut-Off (3.8/5)
- Hamburg Connector (3.7/5)
- Hamburg Trail (3.5/5)
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What is the best time of the year to ride in Lost Valley?
Based on activity log data, the most popular months to ride in Lost Valley are:
- March (91 activities)
- August (83 activities)
- September (81 activities)
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Where can I park to ride in Lost Valley?
There are 4 parking locations listed in Lost Valley. The most popular parking spots are:
- Busch Greenway Trailhead
- Mound Parking
- Weldon Spring Lewis & Clark Trailhead
- August A. Busch Memorial Wildlife & Nature Conservation Park
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What is the longest trail in Lost Valley?
The longest trail in Lost Valley is Lost Valley Trail at 11.2 miles. View all trails sorted by distance.
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What are the best & highest rated hiking trails in Lost Valley?
The best hiking trails in Lost Valley are: View all hiking trails sorted by popularity score.
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What are the best & highest rated trail running trails in Lost Valley?
The best trail running trails in Lost Valley are:
- Monarch Chesterfield Levee (West)
- Lost Valley Cut-Off
- Busch Wildlife
- Hamburg Trail
- Monarch Chesterfield Levee
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How many trails are in Lost Valley?
Lost Valley has a total of 14 trails. Of those, 10 are designated for mountain biking. Browse top mountain biking trails in Lost Valley to find detailed information including difficulty ratings, distances, and trail conditions.
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Which trail has the most elevation gain in Lost Valley?
The trail with the most elevation gain in Lost Valley is Lost Valley Trail with 1,040 ft of elevation gain. View all trails sorted by elevation gain.
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Which trail has the most elevation descent in Lost Valley?
The trail with the most elevation descent in Lost Valley is Lost Valley Trail with 1,007 ft of elevation descent. View all trails sorted by elevation descent.
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What activities are most popular in Lost Valley?
Lost Valley supports the following activities: Mountain Biking, Hiking, Trail Running.
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What are the steepest mountain biking trails in Lost Valley?
The steepest mountain biking trail in Lost Valley is Lost Valley Cut-Off with an average grade of 1.9%. View all trails sorted by grade.
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Are there any trails with scenic viewpoints in Lost Valley?
Yes, there are 1 scenic viewpoints marked along trails in Lost Valley. Some popular viewpoints include: Explore more points of interest to find trails with the best views.
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Are the trails open in Lost Valley?
The overall region status for Lost Valley is Minor Issue / Yellow. Out of 13 trails:
- Clear / Green: 10
- Minor Issue / Yellow: 3
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What are the most popular mountain biking routes in Lost Valley?
The most popular mountain biking routes in Lost Valley are: View all mountain biking routes in Lost Valley.
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What type of bike is most common in Lost Valley?
Based on activity log data, the most common bike types used in Lost Valley are:
- AM (45 activities)
- XC (11 activities)
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What are the top sights to see in Lost Valley?
There are 2 notable sights in Lost Valley. Some of the top sights include: Explore all points of interest in Lost Valley.
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What are the most popular Strava Segments in Lost Valley?
The most popular Strava segments in Lost Valley are:
- Snake or Stick?! (8,734 athletes)
- Construction Sprint (8,188 athletes)
- 1k Levee Sprint (8,111 athletes)
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What are the most popular mountain biking trails in Lost Valley?
The most popular mountain biking trails in Lost Valley are: View all mountain biking trails sorted by popularity.
▼
What are the best beginner ride trails in Lost Valley?
The best beginner mountain biking trails in Lost Valley are:
- Hamburg Trail (2/5)
- Monarch Chesterfield Levee (3/5)
- Lost Valley Cut-Off (3/5)
Activities
Trails
Points of Interest
- By pilznr
GORC & contributors - Admins: GORC
- #10407 - 9,963 views
- lost valley activity log | embed map of Lost Valley mountain bike trails | lost valley mountain biking points of interest
Downloading of trail gps tracks in kml & gpx formats is enabled for Lost Valley.
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