Llwyn-on Reservoir Dam – The Gap Pass loop from Libanus
Llwyn-on Reservoir Dam – The Gap Pass loop from Libanus
4.6
(5)
16
riders
Llwyn-on Reservoir Dam – The Gap Pass loop from Libanus
04:07
53.7km
920m
Mountain biking
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike. The starting point of the route is accessible with public transport.
Last updated: August 7, 2026
Tips
Your route passes through protected areas
Please check local regulations for:
Bannau Brycheiniog National Park
Cwm Taf Fechan Woodlands Site of Special Scientific Interest
Waypoints
Start point
Bus stop
18.8 km
Llwyn Onn Reservoir
Highlight • Structure
Tip by
19.0 km
Llwyn-on Reservoir Dam
Highlight • Structure
Tip by
25.7 km
Pontsarn Viaduct
Viewpoint
27.1 km
Taf Trail
Highlight • Cycleway
Tip by
32.1 km
Wooden Bridge in Bannau Brycheiniog Forest
Highlight • Bridge
Tip by
33.8 km
Pentwyn Reservoir
Highlight • Lake
Tip by
34.5 km
Dolygaer Activity Centre
Highlight • Cafe
Tip by
36.0 km
Pentwyn Reservoir
Lake
36.7 km
Taf Fechan Forest
Forest
39.7 km
Start of The Gap Trail, Bannau Brycheiniog National Park
Highlight • Trail
Tip by
40.4 km
The Gap Pass
Highlight (Segment) • Viewpoint
Tip by
53.7 km
End point
Bus stop
Way Types & Surfaces
Way Types
18.0 km
11.1 km
8.68 km
7.51 km
5.47 km
2.76 km
269 m
Surfaces
19.0 km
16.2 km
6.69 km
6.06 km
4.30 km
1.43 km
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Sign up for freeElevation
Highest point (590 m)
Lowest point (200 m)
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Sign up for freeWeather
Powered by Foreca
Tuesday 13 October
16°C
8°C
21 %
Additional weather tips
Max wind speed: 29.0 km/h
to get more detailed weather forecasts along your route
Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
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