Sirona 100

Barmouth, United Kingdom • 14 Aug 2027

Sirona 100 2027

Sirona 100 2027 is an ultrarunning event on the Wales Coast Path, located in Barmouth LL42, United Kingdom, held on 14 August 2027. The route runs from Barmouth to Cardigan and includes substantial elevation gain.

Available distances:

  • 100 mi
  • 100 km

The course covers 100 miles with approximately 15,000 ft of ascent and is offered with a generous 50 hour time limit. The event is organised by Stable Adventures and includes live tracking, emergency medical cover, well-stocked checkpoints, drop bag access, a sleep station, GPS/GPX route files, and experienced support crew. Finishers receive a limited edition belt buckle and a finisher's medal.

Participants must be 18 or over on race day. A mandatory kit list is enforced; required items include appropriate footwear (trail shoes recommended), water bottles (minimum 1 litre total), a charged mobile phone, downloaded GPX/GPS files, a headlamp or other light source, waterproof top and trousers, warm clothing, a survival bag, a compass, and adequate food reserves (minimum 500 calories when leaving the start line or each checkpoint).

Logistical information such as registration pricing and entry availability is provided for the two distance options. Visit the organization's website for the most recent information.

Race information

100 mi
Sirona 100mi
100 km
Sirona 100k
Visit the organization's website for the most recent information.
Trail runs nearby

A three day, fully guided loop of Northern Snowdonia covering just over 100 km and 47 summits with low guide ratios, daily return to Capel Curig and on route support.

SkyRun Eryri in Rhyd-Ddu, Eryri/Snowdonia stages four mountain races from 16 km to 55 km on 15 August 2026, with large elevation gains, aid stations and a mix of ridgelines, scrambling and technical trails.

Annual mixed terrain running event in Tywyn with multiple course options including the Rotary Challenge. The race publishes past results, offers volunteer roles and merchandise, and runs alongside the Talyllyn Railway.

A very short but steep mountain race on Tryfan near Bethesda, with exposed rocky terrain and expert navigation required. Minimum age over 18 and a £1 entry fee supports Ogwen Mountain Rescue.

Add Event
Help us complete the calendar!
  • Distance is at least 5 km
  • Event has a website or Facebook page
Website
Optional: Please provide your e-mail address if we may contact you.
Report a change
We will only update the data if the information is also on the website.