Where there is a recorder please contact them to log your completion. In addition, or if there isn't a recorder, you are invited to share your experience on the gofar facebook page to encourage and inspire other runners to have a go!

  The Dragon's Tongue                                             North Wales

This is a traverse of the 5 Welsh Corbetts in southern Snowdonia: Cadair Berwyn, Arenig Fawr, Aran Fawddwy, Glaswym and Cadair Idris. It starts at the car park at Pistyll Rhaeadr south of Cadair Berwyn and finishes at the end of the pony path below Cadair Idris.  Corbetts are strictly Scottish hills of between 2500 and 2999 feet with a drop of at least 500 feet on all sides but the principle has been extended to England and Wales! Those familiar with accounts of the Meirionnydd Round will appreciate that this is mean, unforgiving country by any standards. The Dragon's Tongue was devised as a more modest foray into the area clocking up some 55 miles with 14,500 feet of ascent.  The excursion out to the Arenigs provides respite and contrast as well as creating an opportunity for food drops or support at each end of Lake Bala.

Pete Simpson and Tony Wimbush first completed the route in 20 hours 59 minutes in 2009 as an on-sight, unsupported run (except for food drops). It is offered as an informal challenge with no strict time limits although completion within daylight hours will be an obvious target.  A secondary optional objective can be to include a further nine 2500 foot summits listed as Nuttalls (these have a drop of at least 50 feet on all sides).



Click the icon to view or print a schedule of summits and actual times. This includes the 5 Welsh Corbetts and the 9 optional Nuttall summits.

Use in conjunction with OS Explorer Maps 255 Llangollen & Berwyn and OL23 Cadair Idris & Llyn Tegid (1:25000)


This is an informal challenge without regisrations or time limits. Why not share your experience on facebook to encourage and inspire other runners to have a go!

Links and Further Information



All the routes on this site require proven mountain running experience. You undertake them entirely at your own risk. Please take full mountain safety precautions at all times.  Always ensure you carry sufficient clothing, food and equipment to cope with dramatic changes in the weather conditions!  Appropriate insurance cover is recommended.


The object of this website is to provide a single, ready source of information on the ultra-distance mountain challenges which have been developed over the past three or more decades. It now offers a diverse range of long and "short", old and recent, formal and informal routes from around the UK to encourage runners of all ages and abilities to have a go subject to proven mountain experience in all conditions.



Please send details and a schedule of any record-breaking runs and the like to Martin Stone who maintains records on behalf of the Fell Runners Association.  Email:


This site is generally updated each winter.  These updates will be announced on gofar facebook. If you are not on facebook and wish to subscribe to future updates email: and put "subscribe" in the subject line, or "delete" if you wish to unsubscribe.


If you can improve on the accuracy of this resource, offer details of other routes (old and new), spot any errors in grid references, names, heights, spelling or punctuation, or find a link which does not work please email: