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Routes
Mountain biking trails
United States
Missouri
St. Louis County
Chesterfield

Katy Trail – Katy Trail loop from Spirit of Saint Louis Airport

Routes
Mountain biking trails
United States
Missouri
St. Louis County
Chesterfield

Katy Trail – Katy Trail loop from Spirit of Saint Louis Airport

Moderate

2.9

(21)

87

riders

Katy Trail – Katy Trail loop from Spirit of Saint Louis Airport

02:10

35.3km

190m

Mountain biking

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: April 20, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Katy Trail State Park

Weldon Spring Conservation Area

Waypoints

A

Start point

Bus stop

Get Directions

1

6.01 km

Katy Trail

Highlight (Segment) • Cycleway

This section of the Katy Trail extends from Greens Bottom Road to Missouri Research Trail. Here, you'll discover a compact gravel road shaded with views of the Missouri River.

Tip by

2

10.1 km

Katy Trail

Highlight (Segment) • 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.

Tip by

3

13.6 km

Weldon Station

Highlight • Rest Area

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

Tip by

4

19.0 km

From tough singletrack to smooth double-track, the Weldon Spring Conservation Area has a variety of trails that are great for riding. Be aware: just because a trail has the word …

Tip by

5

20.3 km

Hamburg Trail

Highlight (Segment) • 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.

Tip by

6

21.4 km

Weldon Spring Site

Highlight • Monument

The Weldon Spring Site has an interesting past. They used to dump building rubble containing uranium and radium, along with other radioactive materials inside the mound. Nowadays you can climb …

Tip by

7

25.2 km

Mononame 207 Reservoir

Highlight • Lake

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 …

Tip by

B

35.3 km

End point

Bus stop

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Way Types & Surfaces

Way Types

11.8 km

10.1 km

6.24 km

3.12 km

1.96 km

1.95 km

Surfaces

14.2 km

10.1 km

6.24 km

2.60 km

2.02 km

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Elevation

Elevation

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

Highest point (200 m)

Lowest point (140 m)

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Weather

Powered by Foreca

Today

Monday 20 July

33°C

23°C

31 %

Additional weather tips

Max wind speed: 8.0 km/h

to get more detailed weather forecasts along your route

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Description

If you're looking for a relaxed yet rewarding mountain biking route near the Spirit of Saint Louis Airport, the Katy Trail – Katy Trail loop from Spirit of Saint Louis Airport is a fantastic choice. This moderate 21.9-mile (35.3 km) ride, taking about 2 hours and 10 minutes, offers a gentle 620 feet (189 metres) of elevation gain, making it ideal for those seeking accessible mountain biking routes or a family-friendly outing on a crushed limestone path.

What to expect on Katy Trail – Katy Trail loop from Spirit of Saint Louis Airport

Expect a smooth journey on the Katy Trail's 8-foot-wide, hard-packed crushed limestone surface, perfect for gravel grinding. While generally firm, be aware that heavy rains can make it soft or muddy. The scenery unfolds with diverse views, from rolling farmland and dense forests to tallgrass prairies. A significant highlight is the stretch alongside the Missouri River, where you'll enjoy stunning water views, expansive floodplains, and impressive limestone bluffs. The trail's nearly level surface means minimal-grade hills, making it physically easy and not technically challenging for experienced mountain bikers.

Planning your visit

The Katy Trail is known for its accessibility, with many trailheads offering amenities like water and restrooms. Since the trail surface can become soft or muddy after heavy rains, checking local conditions before you go is a good idea. This route is suitable for mountain bikes, hybrids, and comfort bikes with wider tires. Many towns along the trail offer restaurants and bike services, making it easy to plan stops.

Trail details

  • Distance: 21.9 miles (35.3 km)
  • Elevation gain: 620 feet (189 metres)
  • Difficulty: moderate
  • Estimated time: 2 hours and 10 minutes

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