← All races
Trail

Snowdonia Trail Challenge

📅 July 4, 2027 (estimated date)📍 Caernarfon · United Kingdom

⚠️ 2027 edition: provisional information

The date is estimated from the 2026 edition (July 4, 2026), on the same day of the week. Courses, start times, fees and description are carried over from the previous edition: check them on the official website. This page will be updated as soon as the organizer publishes them.

Available distances

34.2 mi26.1 mi15.2 mi8.1 mi

Races on the programme

RaceDistanceElevation gain
Trail 55 km34.2 mi10,919 ft
Trail 42 km26.1 mi8,730 ft
Trail 24,5 km15.2 mi4,580 ft
Trail 13 km8.1 mi1,913 ft

About

The Snowdonia Trail Challenge takes place in Caernarfon, Wales, on 4 July 2027, in the heart of the Snowdonia mountains. Four trail races are on offer: 13 km, 24.5 km, 42 km and 55 km.

The climbing grows with the distance: 583 m of elevation gain over 13 km, 1,396 m over 24.5 km, 2,661 m over 42 km and 3,328 m over 55 km.

Highlights

  • Off-road
  • Forest
  • Mountain
D-255

Prepare for Snowdonia Trail Challenge with RunRun

An AI-generated training plan, adjusted every week based on your real sessions. Built around your goal, current level and race date.

  • Personalized plan based on your VO2max, history and weekly availability
  • Strava and Garmin sync: your sessions are analyzed and the plan adapts
  • Target paces, long runs, key sessions: everything is calculated for race day
Create my free plan No credit card. Sign up in 30 seconds.

Races nearby

Other upcoming races around Caernarfon.