Portsmouth Coastal Waterside Marathon

Portsmouth, England, UK · December 20, 2026
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Race Day Weather

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47°at start
50° high
Breezy
Dry

Cool start, steady conditions

Runners will face temperatures starting at 47°F and rising to a maximum of 50°F. With an average humidity of 87% and winds from the SW at 14 mph, it's advisable to stay hydrated and consider pacing conservatively. The light winds will create a manageable environment, allowing for an efficient race strategy.

Race day forecast available in 233 days
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Distance: 26.2mi
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Race Info

The Portsmouth Coastal Waterside Marathon offers runners a festive and scenic journey along the picturesque Southsea seafront and around Langstone Harbour. This flat, multi-terrain course combines road and coastal paths, providing a dynamic running experience with minimal elevation changes—just 108 meters over the entire marathon distance. As you run, you'll be treated to stunning sea views and pass key landmarks like the Tudor Sailing Club and Applegreen garage. The course is renowned for its lively atmosphere, featuring aid stations stocked with treats like jelly beans, Jaffa cakes, and savory snacks. Runners can also enjoy on-site massage and taping services to enhance their race day experience. Whether you're a seasoned marathoner or a novice, this race promises a memorable and accessible challenge amidst the vibrant coastal setting.

Area Map

Course Map

FAQ

When is the 2026 Portsmouth Coastal Waterside Marathon?

The 2026 Portsmouth Coastal Waterside Marathon will be held on Sunday December 20, 2026.

What is the time limit for the Portsmouth Coastal Waterside Marathon?

The time limit for the Portsmouth Coastal Waterside Marathon is 7.25 hours.

What will the weather be like for the 2026 Portsmouth Coastal Waterside Marathon?

The forecast calls for a high of 50°F and a low of 47°F with a 0% chance of rain.

Historical Weather

Based on 5 years of data
Avg Temp
48°F
L:46° H:48°
RunScore
6
Conditions
Rain Freq
60%
3 of 5 yrs
Wind15mph
Dew42°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
clear-day
49°/51°Light
8
2024
partly-cloudy-day
42°/45°-
6
2023
cloudy
49°/50°-
7
2022
partly-cloudy-day
40°/46°Light
5
2013
partly-cloudy-day
48°/50°Light
5