The Snowdonia Skyline                                           North Wales 

This is a 24 hour sky run taking in 24 summits and 16,000' of climbing on the north-east to south- west skyline of the Snowdonia National Park between Conwy and Nebo.  It involves running and scrambling across some 39 miles of high-level mountain terrain.  Support provisions can be obtained en-route at Ogwen, Pen-y-Pass, Yr Wydffa and Rhydu while the start and finish are connected by public transport.  It was devised and first completed by Chris Wearne in an unsupported run taking  23 hours 56 minutes in May  2014 which included a 3 hour bivvy on Foel Grach.


The object is to visit the 24 summits listed below starting near Conwy GR SH775778 and finishing near Nebo GR GRSH483500. Use OS Explorer map (1:25000): OL17 Snowdin/Yr Wyddfa

Caution:  The route includes seven grade one scrambles including Tryfan North Ridge, Bristly Ridge and Crib Goch.  While rock-climbing ability is not required runners need to ensure they have sufficient scrambling experience to negotiate exposed mountain ridges in unpredictable weather conditions.  Chris Wearne would be pleased to assist if further advice is needed, see below for contact details.


Click on the icon to view/print a pdf schedule of the inaugural traverse in May 2014


This is an informal challenge without rules, time limits or registrations.

Links and Further Information

  • Enquiries and reports - email:​​

  • The Snowdon Skyline - information sheet on the route compiled by Chris Wearne.Further advice on the route and the scrambling experience required can be obtained directly from Chris, see email address above.


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!


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: