4.2
(35)
279
riders
37
rides
Mountain bike trails around St. Allen, located in Cornwall, UK, offer diverse networks through picturesque woodlands and rolling hills. The region features ancient woodlands like Idless Woods, which include mixed native trees and a small stream. Historical elements such as the Carnon Viaduct and remnants of an Iron Age hill fort add character to the landscape. The terrain provides a mix of easy paths and more challenging routes with varying elevation gains.
Last updated: August 18, 2026
4.0
(3)
4
riders
5.18km
00:28
60m
60m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
5.0
(1)
13
riders
27.8km
02:02
290m
290m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Sign up for free
4.3
(3)
4
riders
27.2km
01:59
380m
380m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
3
riders
27.1km
01:45
360m
360m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
4.0
(1)
4
riders
11.6km
00:47
130m
130m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
Get access to more routes and recommendations from other explorers.
Sign up for free
Already have an account?
Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
Start today with a free account
Your next adventure awaits.
Login or Signup
Lots of options for food and drink, plenty of space to sit and rest if you need to.
0
0
Awful for cycling - loose gravelly steep uphill and downhill. Had to get off bike and push
0
0
Sturdy footware and freezing weather required to see it.
0
0
Gnarly down and up with some hike-a-bike
0
0
Clearly the best alternative to get around. Seems to be a former railway line.
0
0
Had intended to cut off the bridleway at the north end towards trelissick but it was a no go as national trust land with no cycling allowed
0
0
St. Allen offers a diverse network of mountain biking trails, ranging from easy rides suitable for beginners to more challenging routes for experienced riders. You'll find paths through picturesque woodlands, such as Idless Woods, and routes that incorporate historical features and rolling hills. The terrain varies, with some routes featuring moderate elevation gains, while others are flatter and follow river valleys.
Yes, St. Allen has several family-friendly mountain bike trails, particularly within Idless Woods. Routes like the Idless Woods loop with Woodman's Cabin are easy, relatively short (around 5.2 km), and ideal for all fitness levels, making them perfect for a family outing. The wooded environment provides a pleasant and safe riding experience.
Many of the trails around St. Allen, especially those in Idless Woods, are dog-friendly. The ancient woodlands offer plenty of space for dogs to enjoy alongside their owners. However, it's always recommended to keep dogs under control, especially around wildlife or other trail users, and to check specific trail regulations if available.
The trails around St. Allen are rich in natural beauty and historical significance. In Idless Woods, you can explore ancient woodlands with native trees, bluebell carpets in spring, and potentially spot wildlife like deer or otters. The woods also hold remnants of an Iron Age hill fort and an old gunpowder works. Another notable landmark is the Carnon Viaduct, an impressive structure designed by Isambard Kingdom Brunel, which you can see on routes like the Carnon Viaduct – Newham Trail loop from Truro.
There are over 35 mountain bike trails available around St. Allen. These include a mix of easy, moderate, and a few more difficult options, ensuring there's something for every skill level.
The region's diverse landscapes make it enjoyable year-round, but spring and autumn often offer the most pleasant conditions with milder temperatures and beautiful scenery, such as bluebells in Idless Woods during spring. While trails can be ridden in winter, some paths might be wet or muddy, especially after heavy rain.
Yes, there are several longer routes available. For example, the Idless Woods Gravel Climb – Ildless Woods Riverside Trail loop from St. Erme is an easy 27.4 km ride that takes you alongside a stream through the wooded landscape. Another option is the Idless Woods Gravel Path – Truro Cathedral loop from Truro, a moderate 27.6 km route.
Parking is generally available near popular trailheads, particularly around Idless Woods. Specific parking information can often be found on individual route pages or local forestry websites. For routes starting from Truro, public car parks in the town would be an option.
The mountain biking trails around St. Allen are highly regarded by the komoot community, with an average rating of 4.2 stars from over 30 reviews. Riders often praise the varied terrain, the beauty of the woodlands, and the options available for different skill levels.
While St. Allen itself is a smaller area, the nearby city of Truro offers a wide range of cafes, pubs, and accommodation options. Idless Woods also has a Woodman's Cabin, which can be a convenient stop. It's advisable to check opening times and availability, especially for smaller establishments.
Yes, many of the mountain bike trails in St. Allen are designed as circular routes, allowing you to start and finish at the same point. Examples include the Idless Woods loop with Woodman's Cabin and the Idless Woods Gravel Path – Idless Woods Gravel Climb loop from Truro, which are both convenient for exploring the area without retracing your steps.
Elevation gains vary significantly across the St. Allen trails. Easy routes might have minimal climbing, such as the Idless Woods loop with Woodman's Cabin with about 58 meters of ascent. Moderate trails, like the Carnon Viaduct – Newham Trail loop from Truro, can feature around 380 meters of climbing, offering a good workout without being overly strenuous.


Browse the best MTB trails in other regions.