2026 Wales Marathon (Tenby) - Jun 28

2026 Wales Marathon (Tenby) - Jun 28 Race Completed

Race Completed

This marathon has finished. Check back for next year's edition.

Race Information

Race2026 Wales Marathon (Tenby) - Jun 28
CityTenby
Date2026-06-28 at 10:00
Time Limit6 hours
Cutoff pace8:32/km
TimezoneEurope/London
Official SiteActivity Wales Events

Race Day Weather

Average Temperature15.2°C / 59°F
Humidity88%
Wind27.3 km/h
Rain Chance48%
Typical ConditionsMild, breezy late-June morning on the Pembrokeshire coast. Expect around 15C (59F) at the 10:00 start, climbing into the high teens by midday, with a fresh sea breeze, high coastal humidity and a moderate chance of a passing shower.

What to Prepare: Dress for mid-teens Celsius and wind off the sea rather than heat. A vest or short-sleeve top works for most; carry a thin layer for the exposed cliff sections. The 10:00 start means later miles can warm up, so start your hydration plan early.

Based on historical averages for race week. Use our Weather Score Calculator and What to Wear Guide for personalized advice.

Wind Impact on Race Day

Wind at 27.3 km/h can affect your marathon pace by 5-15 seconds per kilometer. Headwinds slow you down exponentially — a 20 km/h wind costs more than twice a 10 km/h wind.

Calculate your wind-adjusted pace →

Race-Week Climate

Based on 20 years of race-week weather (2005-2024), MERRA-2 reanalysis

Cooler Typical Warmer
Temperature 13.8°C 15°C 16.8°C
Dew point 10.8°C 13.1°C 14.9°C
Wet-day chance: 48% Runnability: 67/100

Data: NASA POWER (MERRA-2 reanalysis), NASA Langley Research Center

Course Profile

Course TypeOut-and-back, fully closed roads, coastal national park
Elevation Gain330m
TerrainRoad
ProfileUndulating and genuinely demanding rather than flat. The route rolls out through the Pembrokeshire countryside to Pembroke Castle, then returns along the coast with named climbs such as the steep pull into Penally and the up-and-down through Manorbier. Total ascent is roughly 330m, so respect the hills and pace conservatively.

Prepare for 2026 Wales Marathon (Tenby) - Jun 28

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Featured In

Best Marathon Destination Races for Travel in 2026 Best Marathons in Europe to Run in 2026 Most Scenic Marathon Courses in the World (2026) Best Marathon in Wales

Frequently Asked Questions

What is the Wales Marathon route?

The Wales Marathon starts and finishes in Tenby, Pembrokeshire, with the gun at Tudor Square and an assembly point near Salterns Car Park. The fully closed-road course heads out through the Pembrokeshire countryside to Pembroke Castle, then turns back along the coast through Penally and Manorbier, finishing down the famous red carpet in Tenby to big crowds. It is the running finale of Long Course Weekend Wales.

Is the Wales Marathon flat or hilly?

It is undulating and genuinely challenging, not flat. Runners report named climbs including the steep pull into Penally and the up-and-down through Manorbier, with total ascent around 330m. One common review line is that there is no place to hide on this course, so train for the hills. Plan a conservative effort with our pace calculator.

How much climbing does the Wales Marathon have?

The coastal course is one of the hillier UK road marathons. Independent runner GPS data puts total ascent in the region of 330-400m, concentrated in the rolling sections to Pembroke Castle and the cliff-side return. See how the climbs map against your goal pace with our elevation profile tool.

How do I enter the Wales Marathon 2026?

The marathon can be entered on its own (separate from the Long Course Weekend swim and bike) via the official site. Entry for 2026 is around £60, paid in GBP, and online entries close on 24 June 2026. It is a popular closed-road event, so enter early rather than relying on a late place.

What time does the Wales Marathon start and what is the cut-off?

The marathon starts at 10:00 from Tenby on Sunday 28 June 2026. There is a 6-hour overall time limit, with the final cut-off at 4pm in Tenby and an intermediate checkpoint (roughly 3 hours) at the halfway point. Aid and water stations are spaced about every 5 miles.

What should I wear for the Wales Marathon?

Late June in Pembrokeshire is usually mild and breezy, around 15C (59F) at the start and warming through the morning. Most runners are comfortable in a vest or short-sleeve top, but the exposed coast can be windy, so pack a thin layer for the cliff sections. Estimate your finish with our finish time calculator.

Is the Wales Marathon a Boston Qualifier?

The Wales Marathon is a full 42.195km closed-road marathon, but we could not independently confirm UK Athletics or World Athletics course certification, so do not assume a finish time here is valid for Boston qualifying (BQ) or a London Good For Age (GFA) entry. Check the official organiser and the B.A.A./London rules before relying on it, and compare your target with our Good For Age tool.

Where is Tenby and how do I get there?

Tenby is a walled seaside town in Pembrokeshire, south-west Wales. It has its own railway station on the line from Swansea and Carmarthen, and the nearest larger airports are Cardiff and Bristol. Roads close for the race, so arrive the day before and stay locally; the compact town centre is walkable to the start and the red-carpet finish.

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