This walk has been cancelled

Weather forecast predicts prolonged rain during the period of the walk

Cardiff group logo.

Cardiff Group

We are the Cardiff Ramblers. We open the way for everyone in our local community to enjoy the pleasures of walking.

Join the Ramblers and enjoy

  • unlimited free access to 50,000 Ramblers group walks
  • a library jam-packed with thousands of tried-and-tested routes
  • a welcome pack teeming with top tips plus our Walk magazine
  • exclusive discounts from our partners
  • knowing your support is opening up more places to walk and helping more people discover the joy of walking

Overview

A walk from Cefn Onn Park up over the ridge to Coed y Werin and over to Caerphilly Mountain.  The return is along the Rhymney Ridgeway before descending back to Cefn Onn Park.

Sunday, 7 December 2025
Start time:
9:45 am
Estimated finish time:
4:00 pm
Difficulty:
Moderate
Distance:
16.1km / 10.0mi
Ascent:
518.2m / 1700ft
Type:
circular

Local Grade: B

The walk is mainly on good paths but involves a number of steep climbs and descents.

Features

  • Toilets available

Starting point

Grid reference:
ST 17851 83495
Nearest postcode:
CF14 0UE
what3words:
shrimp.linked.entry
Start time:
9:45 am

Lisvane/Thornhill Railway Station car park

Join the Ramblers and enjoy

  • unlimited free access to 50,000 Ramblers group walks
  • a library jam-packed with thousands of tried-and-tested routes
  • a welcome pack teeming with top tips plus our Walk magazine
  • exclusive discounts from our partners
  • knowing your support is opening up more places to walk and helping more people discover the joy of walking