Snowdon Ultra 100

The Return of the Remarkable Snowdon Ultra 100 Mile Race!  Starting from the beautiful Betws-y-Coed, with 13 Checkpoints & 7436m of Ascent over 100 Stunning miles! This is GB Ultras support at its very best throughout. Taking in the Snowdonia Slate Trail, and a series of Mountain Trails along Heather Terrace on Tryfan, Snowdon, Glyder Fach, Glyder Fawr, Pen yr Ole Wen, Carnedd Dafydd, Carnedd Llewelyn and Pen yr Helgi Du. 

LIVE ONLINE GPS TRACKING follows the runners along the course.  UTMB Qualifying Points following an Unmarked Route, therefore classed as a Navigation Event.

Saturday 12th October 2019


Watch the Race Live with GB Race Tracker

You can now watch the entire race unfold live thanks to the live tracking we use for this event


Take on ALL 4 of our 100 Milers for the Grand Slam Buckle & Hall of Fame



Top 25 finishers earn a Gold Snowdon Ultra BUCKLE, 26-50 finishers earn a Silver Snowdon Ultra BUCKLE and 51+ finishers earn the Bronze Snowdon Ultra BUCKLE.

There are additional Bespoke GB Ultras Lion Trophies for the Top 3 Male and Top 3 Female finishers! UTMB Qualifying Race!

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Snowdon 100

Ready for the challenge?


Full Race details

Cae Llan/Village Green, Station Road, Betws-Y-Coed, LL24 0AE.

To download the GPX or KML file for this event simply select the correct file in the menu below.

At least 21 years old + at the time of the race.
In good health and must have run at least a 50 Mile Ultra-Marathon distance race prior to the event.
This can be for an event not yet taken place but that will be completed prior to Snowdon Ultra start.
Runners are expected to be competent map readers for their own safety willing to use their map & compass in the event of low cloud/poor conditions.
This can be for an event not yet taken place but that will be completed prior to Snowdon Ultra start.

GB Ultras Running Club

Want to join the GB Ultras Running Club? Head over to the Club page now!

Visit the Running Club Page CLICK HERE

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