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Llanberis Tunnel – Telegraph Valley (Maesgwm) loop from Llanberis

Llanberis Tunnel – Telegraph Valley (Maesgwm) loop from Llanberis

Hard

5.0

(3)

riders

Llanberis Tunnel – Telegraph Valley (Maesgwm) loop from Llanberis

03:54

50.0km

1,150m

Gravel riding

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: July 17, 2026

Tips

Includes a very steep uphill segment

You may need to push your bike.

After 38.0 km for 65 m

Waypoints

Start point

Bus stop

Get Directions

1.22 km

Pete's Eats Cafe

Highlight • Cafe

Nothing short of an institution, Pete's Eats is the only place to be when rain cancels play Llanberis. Of all the food and drink available on the impressively extensive menu, …

Tip by

2.38 km

Ruins

3.43 km

Llanberis Tunnel

Highlight • Structure

Great bike path with a small section through the hill for a change!

Tip by

6.30 km

View of Snowdon

Highlight • Climb

Hidden up a short, sharp climb you come out to the most amazing view of the mountains of Snowdonia.

Tip by

29.5 km

Dorothea Slate Quarry and Ruins

Highlight (Segment) • Historical Site

Well worth a visit and I'd strongly recommend riding around the entire quarry taking time to check out the huge gantry pyramids and pumping station.

Tip by

33.6 km

View of Snowdon (Yr Wyddfa) Across Llyn Nantlle Uchaf

Highlight • Viewpoint

Nantle Valley is well known for its mountains and ridge. A lot of historic settlements and slate mining. Stunning views of Snowdonia. Road surface is good watch out for sheep …

Tip by

37.7 km

Drws y Coed Climb

Highlight (Segment) • Climb

A 4.3km climb in Dyffryn Nantlle with a deceptive average gradient of 3.3% with the final section closer to the maximum gradient of 12.4%.

A 4.3km climb in Dyffryn Nantlle …

Translated by Google •

Tip by

44.5 km

View of Mynydd Mawr and Llyn Cwellyn

Highlight • Summit

45.5 km

Telegraph Valley (Maesgwm)

Highlight (Segment) • Trail

Maesgwm is also known as Telegraph Valley. The trail is gravel and well-made, brilliant to ride and much quieter than the main Llanberis path. It makes a great loop from …

Tip by

50.0 km

End point

Bus stop

Way Types & Surfaces

Way Types

24.7 km

8.39 km

5.90 km

5.43 km

3.54 km

2.03 km

Surfaces

23.1 km

16.7 km

8.48 km

1.76 km

< 100 m

Elevation

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

Highest point (460 m)

Lowest point (70 m)

Weather

Monday 20 July

20°C

8°C

0 %

Additional weather tips

Max wind speed: 17.0 km/h

to get more detailed weather forecasts along your route

Comments

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Llanberis Tunnel – Telegraph Valley (Maesgwm) loop from Llanberis

Pete's Eats Cafe

Llanberis Tunnel

View of Snowdon

Dorothea Slate Quarry and Ruins

View of Snowdon (Yr Wyddfa) Across Llyn Nantlle Uchaf

Drws y Coed Climb

View of Mynydd Mawr and Llyn Cwellyn

Telegraph Valley (Maesgwm)

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