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Routes
Mountain biking trails
United Kingdom
England
South West England
Devon
West Devon
Tavistock

Grenofen Tunnel – Gem Bridge loop from Tavistock

Routes
Mountain biking trails
United Kingdom
England
South West England
Devon
West Devon
Tavistock

Grenofen Tunnel – Gem Bridge loop from Tavistock

Moderate

4.3

(3)

42

riders

Grenofen Tunnel – Gem Bridge loop from Tavistock

02:10

25.8km

450m

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: August 17, 2026

Tips

Cycling is not permitted along parts of this route

After 319 m for 110 m

After 18.6 km for 156 m

After 25.5 km for 110 m

Waypoints

A

Start point

Bus stop

Get Directions
1

4.37 km

Grenofen Tunnel

Highlight • Structure

Great walk, the footpath from the top of brook lane/Rix hill is not well used, just follow the hedgeline!

Tip by

2

4.74 km

Grenofen Tunnel

Highlight • Structure

Part of the Drake’s Trail and the Dartmoor Way, this 374-yard (341 m) tunnel was built by Brunel in the mid-1850s for the South Devon & Tavistock Railway. After the …

Tip by

3

5.58 km

Gem Bridge

Highlight • Bridge

Gem Bridge towers 78 feet (24 m) above the River Walkham, affording wonderful views over the valley below. Until 1965, the original Walkham Viaduct would have stood here. Designed by …

Tip by

4

5.66 km

Drake's Trail: Magpie Viaduct and Bluebell Woods

Highlight (Segment) • Trail

This is an exciting section of the glorious 21-mile Drake's Trail cycling path that runs through Dartmoor.

You will pass through enchanting forestry featuring seasonal bluebells and over Magpie Viaduct, …

Tip by

5

10.1 km

View Over Dartmoor Near Drake's Trail

Highlight • Trail

just off fro the car park, this spectacular view. much easier gravel riding than this morning

Tip by

6

13.0 km

Magpie Viaduct

Highlight • Bridge

Magpie Viaduct was designed by Brunel and originally built in 1859 from granite and timber, then rebuilt in 1902 in Staffordshire brick.

From here you can also enjoy a raised vantage point for views over Dartmoor.

Tip by

7

17.3 km

Double Waters River Crossing

Highlight • River

The River Tavy and the River Walkham meet here at Double Waters.

This peaceful, woodland setting is popular with wild swimmers.

Tip by

8

20.7 km

Grenofen Tunnel on Drake's Trail

Highlight (Segment) • Trail

A network of 21 miles (33 km) cycling and hiking paths, Drake's Trail leads from Tavistock to Plymouth. The Trail passes through quaint countryside, river valleys, peaceful woodland, and vast …

Tip by

B

25.8 km

End point

Bus stop

Loading

Way Types & Surfaces

Way Types

9.80 km

8.96 km

4.21 km

2.11 km

691 m

< 100 m

< 100 m

Surfaces

9.71 km

8.66 km

3.65 km

2.96 km

473 m

404 m

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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 (190 m)

Lowest point (50 m)

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Weather

Powered by Foreca

Thursday 8 October

16°C

10°C

84 %

Additional weather tips

Max wind speed: 29.0 km/h

to get more detailed weather forecasts along your route

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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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