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Radyr Weir – Blackweir Bridge and Weir loop from Pentyrch

Radyr Weir – Blackweir Bridge and Weir loop from Pentyrch

Moderate

5.0

(1)

riders

Radyr Weir – Blackweir Bridge and Weir loop from Pentyrch

02:02

42.4km

420m

Road cycling

Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride. The starting point of the route is right next to a parking lot.

Last updated: June 14, 2026

Tips

Includes a segment in which cycling is not permitted

After 30.6 km for 188 m

Waypoints

Start point

Parking

Get Directions

1.76 km

Climb Through Pentyrch Forest

Highlight (Segment) • Climb

One of the many ways up to Pentyrch, quite possibly one of the nicest ways up. Good, interesting climb, gradient varies with a couple of short steeper sections, road is …

Tip by

23.9 km

River Taff

Lake

24.4 km

Radyr Weir

Highlight • Structure

A pretty weir of the River Taff, the Radyr Weir runs today as a hydro power scheme and a focal point of Radyr town. Many wild salmon and sea trout …

Tip by

26.5 km

Llandaff Weir on the River Taff was built in the mid 1800s to help control the flow and water levels upstream. It was built in a dangerous rapid part of the river which had previously claimed several lives.

Tip by

30.0 km

Gabalfa Woods

Forest

30.7 km

Blackweir Bridge and Weir

Highlight • Structure

Blackweir Bridge crossing the River Taff, was designed and constructed in the 1980s by engineering students at nearby Cardiff University. The students evidently liked the feel of the earth moving under their feet, it can be a bit bouncy!

Tip by

42.4 km

End point

Parking

Way Types & Surfaces

Way Types

20.5 km

14.9 km

4.11 km

2.80 km

141 m

< 100 m

Surfaces

37.2 km

4.51 km

598 m

< 100 m

Elevation

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

Highest point (180 m)

Lowest point (10 m)

Weather

Monday 13 July

27°C

14°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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Radyr Weir – Blackweir Bridge and Weir loop from Pentyrch

Climb Through Pentyrch Forest

Radyr Weir

Melingriffith Water Wheel

Llandaff Weir

Blackweir Bridge and Weir

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