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Cybi Coastal Marathon

Run 26.3mi
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Circumnavigating Ynys Cybi on the Welsh national coastal footpath and Anglesey coastal path, Cybi Coastal is hoping to establish itself as one of the most scenic marathons in the UK. With a limit of 200 runners, we hope this event will attract participants from across the UK who will come to compete alongside local runners on this fantastic route.

Review summary

36 Reviews
  • Course
  • Organisation
  • Atmosphere


Hannah G
"Utterly brutal (where else can you climb a mountain in the last 6 miles?),..."


Nathan J
"Stunning course, friendly atmosphere and well organised. Surprisingly tough..."


Rob W
"Stunning location and organised by awesome people. </p><p>Environmentally..."
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How to enter the Cybi Coastal Marathon

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    26 3 Miles

    Run 26.3mi
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Cybi Coastal Marathon route

The Cybi Coastal will be partially way-marked and will follow the paths, tracks, beaches and coastline of the Welsh national/Anglesey Coastal Path. The entire route passes through magnificent coastline scenery with fine views of wide bays, sandy beaches, dramatic cliffs, the famous South Stack lighthouse and the summit of Holyhead Mountain.

Starting in the port town of Holyhead this race takes you on a variety of surfaces. Easy going paved paths, a small amount of road sections, sandy beaches, fields and single tracks. Tricky cliff tops and with a few good hill climbs and to top it all off a short sharp climb to the top of Holyhead Mountain and back down to sea level. Depending on the weather, this course can be very muddy and trail shoes are highly recommended.

Event Details

Raceday Logistics
Saturday, 3rd August, Registration opens 07:30hrs -09:30hrs.

Event HQ will be at the Holyhead Sea Cadet Unit. (LL65 1YA)

Race briefing at 09:35hrs.

Questions & answers

Find out more from members of the community who did it last year, or those already signed up.

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Cybi Coastal Marathon weather forecast

Mostly cloudy throughout the day.

Predicted highs
Predicted lows
IconModerate breeze possible, up to 12mph

Meet the organizerIcon

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Cybi Coastal Team are ranked #5 in the UK out of 241 organizers

One of the most scenic marathons in the UK

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Cybi Coastal Marathon reviews (36)

5 out of 5 stars

  • Course
  • Organisation
  • Atmosphere
  • J

    Jackie G

    Did the event in 2019

    My favorite marathon. My first marathon in 2018 and I returned 2019, can't wait for 2020.
    Amazing atmosphere, stunning views and all for a great cause.
    Its certainly challenging but well worth it.
  • D

    Donna L

    Did the event in 2019

    Was my first marathon and second marathon 2018 & 2019. Absolutely brutal but felt such an achievement at the end. Fabulous route, even with Holyhead mountain at mile 22! 😂 Amazing scenery and great pit stops. Will be back in 2020.........
  • R

    Rob Smith

    Did the event in 2019

    I had high expectations for this race after my running buddies kept going on about it, I am glad to say that it did not disappoint! The scenery is amazing and the organisation was fantastic. It is now me going on about this race to other running buddies. See you in 2020!
  • B

    Beth T

    Did the event in 2019

    Absolutely stunning event! Organisation, course and marshalls are second to none. This deserves to become an iconic event as it gives Anglesey a marathon to be proud of. I'll be back again next year for my third outing. Its not a PB course, its challenging but sublime!
  • Did the event in 2019

    Stunning location and organised by awesome people.

    Environmentally conscious with great ethics.

    A star race

  • Did the event in 2019

    Stunning course, friendly atmosphere and well organised. Surprisingly tough route, Holyhead Mountain after 23 miles is a killer!
  • V

    Vicky K

    Did the event in 2019

    This is a course with stunning scenery and many challenges. It’s not for the faint hearted. The organisation was amazing and everyone was really friendly. This was my first trail marathon and I really want to compete again. X
  • R

    Rachel Hooper

    Did the event in 2019

    This was my first marathon and although super tough it was an amazing experience. So friendly and amazing scenery.
  • Did the event in 2019

    Great race taking in coaster veiws, did it slightly injured but tough towards end ,but fully fit next year will be going again, volunteers were great👏👏🏃
  • Did the event in 2019

    Utterly brutal (where else can you climb a mountain in the last 6 miles?), incredible scenery, great marshalls and well stocked check points.
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