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Routes
MTB trails
United States
Missouri
St. Charles County

Defiance

The best MTB trails around Defiance

5.0

(2)

161

riders

7

rides

Mountain biking around Defiance offers diverse landscapes and extensive trail networks. The region is characterized by the dramatic bluffs of the Missouri River Valley, heavily forested parkland, and vast conservation areas. These features provide varied terrain for mountain bikers, from natural surface trails to sections of the Katy Trail State Park. The area's geology, including former silica sand quarries, adds unique elements to the riding experience.

Best mountain bike trails around Defiance

  • The most popular mountain bike trail is Lost…

Last updated: May 13, 2026

47

riders

#1.

Lost Valley Trail Loop

18.4km

01:39

210m

210m

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

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Easy

19

riders

11.8km

01:04

140m

140m

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Easy
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2.63km

00:15

50m

60m

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Easy

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Moderate

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Easy
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Popular around Defiance

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Tips from the Community

Darren Reever
December 23, 2025, Stream Crossing

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.

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Back to ride it in December 2025, all those trees were removed so it’s a lot more fun now. Most people seemed to ride the loop counter clockwise with the long gravel climb at the beginning. Clockwise was harder I think.

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Bike repair stand, all the necessary tools and a working air pump. Bathroom and shelter too. No water.

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Darren Reever
May 2, 2025, Spring

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

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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.

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Alexandra Pavia
February 19, 2024, Hamburg Trail

The Hamburg Trail connects the Katy Trail with the August A. Busch Memorial Conservation Area. It's a vital 6-mile trail that connects to both the Mound and Lost Valley areas.

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Tyler Sanders
February 19, 2024, Katy Trail

This trail runs alongside the Missouri River, providing a relaxing ride with the soothing sounds of the water. The trail is well-maintained dirt with ample tree coverage, offering pleasant shade along the way.

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The Mononame 207 Reservoir is a 22-acre lake off the side of the Busch Greenway. It's popular for fishing and has a pretty cool looking backdrop of trees. There's a spot with a bench on the north side of the lake where you can take a break and take in the view

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Frequently Asked Questions

How many mountain bike trails are there in Defiance?

Defiance offers a network of over 10 mountain bike trails, providing diverse riding experiences across its varied landscapes. These trails are spread across several parks and conservation areas, including Matson Hill Park and Klondike Park.

Are there mountain bike trails suitable for beginners in Defiance?

Yes, Defiance has several easy mountain bike trails perfect for beginners. For instance, the Lost Valley Trail Loop is an easy 11.4-mile route that explores forested areas, and the Matson Hill Loop offers a gentle 7.3-mile ride through natural surface terrain.

What kind of terrain can I expect on the mountain bike trails in Defiance?

The mountain bike trails in Defiance feature a mix of terrain. You'll find rugged, natural surface trails in heavily forested parklands like Matson Hill Park, as well as sections of the Katy Trail State Park which offer easier, scenic rides along river bluffs and through open fields. The region's geology, including former silica sand quarries, adds unique elements to the riding experience.

Are there any advanced or difficult mountain bike trails in Defiance?

Yes, for more experienced riders, Defiance offers challenging options. The Historic Bridge – Beaver Time loop from Defiance is a difficult 14.3-mile trail that leads through varied and demanding landscapes, typically completed in about 1 hour 50 minutes.

Are there family-friendly mountain bike trails in Defiance?

Absolutely. Many of the trails, particularly the easier routes and sections of the Katy Trail, are suitable for families. The Katy Trail State Park, which passes directly through Defiance, offers an easy ride with scenic views, and bike rentals are available in Defiance for convenience.

Can I bring my dog on the mountain bike trails in Defiance?

Many parks and trails in the Defiance area, including sections of the Katy Trail and trails within conservation areas, are generally dog-friendly. However, it's always best to check specific park regulations or trail signage for any restrictions, and ensure your dog is on a leash.

What is the best time of year for mountain biking in Defiance?

Spring and fall are generally the most pleasant seasons for mountain biking in Defiance, offering mild temperatures and beautiful scenery. Spring brings lush greenery, while fall showcases vibrant foliage. Summer can be warm and humid, while winter riding depends on snow and ice conditions, which can vary.

Are there scenic viewpoints along the mountain bike trails in Defiance?

Yes, the Defiance area is known for its picturesque views. Klondike Park features a unique lookout bluff offering expansive views of the Missouri River Valley. You can also find the Missouri River Overlook, providing stunning vistas of the river and surrounding bluffs.

Are there any interesting landmarks or attractions near the mountain bike trails?

Beyond the trails, Defiance is rich in natural beauty and historical significance. You can explore the vast Weldon Spring Conservation Area or visit Klondike Park, a former silica sand quarry with unique landscapes. The historic Daniel Boone Home is also a short distance away, offering a glimpse into the region's past.

Is parking available at the mountain bike trails in Defiance?

Yes, parking is generally available at the main trailheads and parks in the Defiance area. Parks like Matson Hill Park and Klondike Park offer designated parking facilities for visitors accessing their trail networks.

What do other mountain bikers enjoy about the trails in Defiance?

The mountain biking routes in Defiance are highly rated by the komoot community, with an average score of 5.0 stars. Riders often praise the diverse landscapes, from dense woodlands to river bluffs, and the variety of trails that cater to different ability levels.

Are there loop trails for mountain biking in Defiance?

Yes, many of the mountain bike trails in Defiance are designed as loops, offering a continuous riding experience. Examples include the Lost Valley Trail Loop and the Matson Hill Loop, which allow you to start and finish at the same point.

Can I reach the mountain bike trails in Defiance by public transport?

Public transport options directly to the trailheads in Defiance may be limited. However, the Katy Trail State Park passes directly through Defiance, and accessing this section by bike or car to a nearby entry point is common. For specific routes, personal vehicle transport is often the most convenient option.

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