Llanberis to Treborth by bike – mountain roads and the Lon Las Menai cycleway

Another bike route from GC – this time a scenic combination of single-track mountain roads and well-maintained cycleways forming part of the Lon Las Menai route. It totals 15 miles but it’s absolutely amazing and well worth the effort!



GC writes: “If you follow the GPS route I’ve recorded please ignore the 2 places where I took wrong turns and had to backtrack – the first of these was in Llanberis Village where I missed the turning called Goodman Street which takes you up into the hills. The second was on the descent from Bethel down to Y Felinheli where I turned too early and had to immediately U-turn. You’ll see those on the GPS route and it should be easy for you to avoid the same mistakes!

This route heads straight into Llanberis village and then climbs on a gorgeous and remote lane that’s barely wide enough for a car until you find yourself riding past epic viewpoints where you’ll not be able to resist stopping to take photos. Next you ride through the magnificent arch of Bryn Bras Castle and descend to cross the river Seiont near Bethel. A short section of B road here is the only place likely to be busy, but it does compensate by taking you past a shop – you might be craving a chocolate bar after those lakeside climbs!

After Bethel the route joins the Lon Las Menai cycle route, which varies between well-maintained pavement sections through forest and quiet waterside streets, before joining a shared-use path that takes you all the way to the turning for Treborth Botanic Gardens and the end of your quest – the Treborth Peace Statue. Every inch of this 15 mile route offers rewarding views and you’ll be glad you made the effort. Enjoy!