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Events
WALRunningTrail13.2mi · 21.2 km / 13.2 mi27.2mi · 43.8 km / 27.2 mi44.1K · 44.1 km / 27.4 mi9.8K · 9.8 km / 6.1 mi

Snowdonia Trail Marathon Eryri

Llanberis, Gwynedd · WAL

Next race day

Sat, 10 Jul 2027

Time TBC · BST

Race websiteCalendar

About Snowdonia Trail Marathon Eryri

Snowdonia Trail Marathon Eryri is a running event in Llanberis, Gwynedd, Wales. Recorded disciplines include 13.2mi, 27.2mi, 44.1K, 9.8K. The listed surface is trail. The listed organiser is Always Aim High Events. The next listed date is 10 July 2027. Check the organiser's information for entry and race-day arrangements. The ATHRECS archive includes editions from 2025. This describes the editions recorded here, not the event's founding date or complete history.

Athlete profiles

Explore some of the athletes with recorded results at Snowdonia Trail Marathon Eryri.

Dates, starts & entry

Times are local to the race. Select the entry route for your distance.

  • 9.8K · 9.8 km / 6.1 mi

    Sat, 10 Jul 2027

    Start time not yet confirmed

    Entries open

    Check race website

    The race marketed as the 10K has a published route length of 9.8km.

    Edition source

  • 27.2mi · 43.8 km / 27.2 mi

    Sun, 11 Jul 2027

    Start time not yet confirmed

    Entries open

    Check race website

    Published trail route lengths: half marathon 13.2 miles; marathon 27.2 miles.

    Edition source

  • 13.2mi · 21.2 km / 13.2 mi

    Sun, 11 Jul 2027

    Start time not yet confirmed

    Entries open

    Check race website

    Published trail route lengths: half marathon 13.2 miles; marathon 27.2 miles.

    Edition source

Location & race day

Listed venue / area

Llanberis, GwyneddWAL

Find this location on a map

Confirm the exact start line, parking and arrival instructions with the organiser. A listed town or postcode may cover a wider area.

About the race

The race marketed as the 10K has a published route length of 9.8km.

Surface:
Trail
Organiser:
Always Aim High Events
Race website

Ways to enter

Compare the listed booking routes. Verified links show when they were checked.

Sat, 10 Jul 2027

No confirmed entry route is listed yet.

Check the organiser’s page for the latest ballot, waiting-list or entry information.

Race website

Third-party prices, booking fees, allocations and refund terms can differ. Confirm the final details with the provider before paying.

Results

Public-figure or athlete-approved ATHRECS results, plus verified organiser links.

1 edition

Sat, 12 Jul 2025

44.1K · 44.1 km / 27.4 mi
Results · utmb.world

Past races

44.1K · 44.1 km / 27.4 miFinishedResults

Sat, 12 Jul 2025

Historical UTMB source record. Trail classification provisional. Ascent 1694 m. UTMB Index category 50K is not the course distance.

More running nearby

Fri

14

May

2027

Eryri by UTMB®

Llanberis, GwyneddWAL

100K / 100M / 20K / 50K / Ultra· Trail

Eryri by UTMB® — an official UTMB World Series Event.

UTMB World Series Event

Start time TBC

Entries open

Details & entryRace website