Lôn Las Cymru

Lôn Las Cymru

August 16 - 19th 2025

Holyhead, Isle of Anglesey to Cardiff, Wales

260 Miles

18,017 feet of elevation change

4 Days

Meet MS groups en route

Lôn Las Cymru 4 - Bike the UK for MS
Lôn Las Cymru 3 - Bike the UK for MS

About Lôn Las Cymru

The spectacular route runs the length of Wales, passing through the heart of the country.

Starting at the tip of Wales at Holyhead, the 260 mile Lôn Las Cymru route traverses the country’s most mountainous countryside, from Snowdonia to the Brecon Beacons. The scenery is among the finest of any cycling route, crossing valleys, hilltops and estuaries and finishing in Wales’ coastal corner of Cardiff Bay.

From exhilarating climbs to traffic free paths, this route includes some of the most stunning and diverse landscapes in the British Isles.

Wales is a small country with a truly amazing diversity of landscapes. Lôn Las Cymru is suitable for those who are looking for a challenge and also enjoy some hilly climbs! The perfect opportunity to appreciate the beauty and variety that Wales has to offer.

Ready. Set. Pedal.

Are you ready for the best adventure of your life? Here’s a couple of pointers of what to expect.

Gearing up to pedal through Isle of Anglesey Gwynedd Powys Merthyr Tydfil Cardiff in:

Days
Hours
Minutes

Explore the Lôn Las Cymru Route

Where will the route take you?

2025 Lôn Las Cymru Overnights

Keen to discover where you’ll be stopping off on route and what your daily mileage will be? Here’s the full route for you to digest. Naturally, these are subject to change, but it’s a good starting point!

Date

  • August 15
  • 16
  • 17
  • 18
  • 19

Destination

  • Holyhead
  • Porthmadog
  • Llanidloes
  • Brecon
  • Cardiff

Mileage

  •  
  • 67
  • 70
  • 64
  • 55