Discover two spectacular feats of engineering on this 10.4-mile walk from Pontcysyllte Aqueduct to Chirk Aqueduct along the Llangollen Canal

By Dorothy Hamilton

Published: Wednesday, 07 June 2023 at 12:00 am


This spectacular, circular walk linking the Pontcysyllte and Chirk aqueducts of the UNESCO Llangollen Canal World Heritage Site takes you through two long tunnels and returns via the Ceiriog Valley and Offa`s Dyke Path.

Completed in 1805 and designed by architects William Jessop and Thomas Telford, Pontcysyllte Aqueduct spans 307 metres and rises 38 metres above the River Dee. Also awe-inspiring, Chirk Aqueduct is 220 metres long.

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Pontcysyllte and Chirk aqueducts walk

10.4miles/16.6 km | 6 hours | moderate | 284m ascent

1. Pontcysyllte Aqueduct

From the car park join the path leading to Trevor Basin with is colourful narrow boats manoeuvring to and from Pontcysyllte Aqueduct.

Continue along the airy towpath while enjoying views of the Dee Valley below you. On the far side pass moored boats and old lime kilns. Look left for views of the 45m high Cefn Viaduct.

After passing under two road bridges you enter the 175m long Whitehouse Tunnel where the eerie darkness is accompanied by the `put-put` sound of passing narrow boats.

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The view from Pontcysyllte Aqueduct/Credit: Getty

2. Chirk Marina

After leaving the tunnel you’ll pass Chirk Marina and go through a wooded cutting to arrive at the 421 metre long Chirk Tunnel. On emerging into daylight again, the towpath now crosses Chirk Aqueduct with its views of the green Ceiriog Valley below. A railway viaduct looms to your right. At a bridge on the far side of the aqueduct, go up to a road and turn left. Pass the Bridge Inn and cross Chirk Bridge.