Races Marathon · Tenby, UK
Wales Marathon
Wales Marathon is a hilly marathon in Tenby, UK, held each July. The route runs out of Tenby to Pembroke Castle and returns along the coast. A runner's race report describes steep climbs from about mile 3 and almost constant ups and downs after that. Early July on the Pembrokeshire coast is usually mild and can turn hot in the sun, with temperatures of about 12 to 20°C. Tenby's hills change the plan itself: expect hill repetitions and long runs that rehearse the course's shape.
Page rebuilt 2026-11-14 · race facts not independently verified — confirm dates and entries on the official race site
When
July
next: Sunday 4 July 2027
Course
hilly
Marathon
Conditions
Early July on the Pembrokeshire coast is usually mild and can turn hot in the sun, with temperatures of about 12 to 20°C.
Racing this course well
The route runs out of Tenby to Pembroke Castle and returns along the coast. A runner's race report describes steep climbs from about mile 3 and almost constant ups and downs after that.
Tenby's hills change the plan itself: expect hill repetitions and long runs that rehearse the course's shape.
Getting a place
- How you get in
- Open entry: first come, first served
- Price
- From £60, with a payment plan available
Official Wales Marathon site →Checked November 2026
Race day
- Next race
- Sunday 4 July 2027
- Also on the day
- half-marathon, 10k
The course in numbers
The hills start early, around mile 3, and keep coming on the way to Pembroke and back. The finish in Tenby is on a red carpet.
- Surface
- Closed roads
Worth knowing
- The race is part of the Long Course Weekend in Tenby, alongside a half marathon and a 10k.
- The organiser publishes a GPX file of the route on its race page.
Pick your goal for Tenby
Pace charts, weekly structure and timelines for the most common marathon goals:
The date shown is the one the organiser has announced. Change it if yours differs.
Build your training around Wales Marathon.
RunV works backwards from race day to today. Your plan adapts when life interrupts, and you approve every change. It does not adapt to this specific course — the pacing guidance above is where the course knowledge is.
Everything above stays free and complete — this is an optional next step, not a paywall.
Asked often
- When is the Wales Marathon?
- The next Wales Marathon is on Sunday 4 July 2027 in Tenby, UK. It is held each July.
- Is the Wales Marathon course flat?
- The route runs out of Tenby to Pembroke Castle and returns along the coast. A runner's race report describes steep climbs from about mile 3 and almost constant ups and downs after that.
- How do I enter the Wales Marathon?
- Open entry: first come, first served. Price: From £60, with a payment plan available.
- How should I train for the Wales Marathon?
- Train specifically for Tenby — terrain, conditions, goal pace — and let the plan flex around real life. With RunV Premium you can adapt your plan to fit your week.
Not sure what to target? Predict your marathon time from a recent race →
More marathon races
Supplements research for this distance
Build for Tenby — around your actual life
RunV engineers your block backwards from race day in July — and adapts it when training doesn't go to script. You approve every change.
