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Endurance races calendar in September 2025 - 2026 in the United Kingdom
ATW Big East & Maldon Triathlon
Essex, United Kingdom
21 Sep, 2025 (Sun)
Triathlon
750 m
25 km
5 km
1.5 km
86 km
20 km
Aquabike
1500 m
40 km
1.5 km
86 km
Price from
93 USD
Dawlish Swim
Devon, United Kingdom
21 Sep, 2025 (Sun)
Swimming
750 m, 1500 m, 3000 m
Price from
35 USD
Dawlish Triathlon
Dawlish Warren, United Kingdom
21 Sep, 2025 (Sun)
Triathlon
750 m
24 km
5 km
300 m
16 km
5 km
Price from
50 USD
Eton Dorney Swim Long
Windsor SL4 6FJ, UK, United Kingdom
21 Sep, 2025 (Sun)
Swimming
2.5 km, 3.8 km, 5 km, 10 km
Price from
39 USD
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Eton Dorney Triathlons
Windsor SL4 6FJ, UK, United Kingdom
21 Sep, 2025 (Sun)
Triathlon
450 m
10 km
2.5 km
750 m
20 km
5 km
Price from
79 USD
The One on the River - Henley
Buckinghamshire, United Kingdom
21 Sep, 2025 (Sun)
Triathlon
1900 m
78.5 km
20 km
1500 m
54 km
10 km
Swimming
750 m, 1500 m, 3000 m
Aquabike
750 m
30 km
1500 m
54 km
Price from
32 USD
Belfast City Half Marathon
Belfast, United Kingdom
21 Sep, 2025 (Sun)
Running
21.097 km
Chagford Challenge
Chagford, United Kingdom
21 Sep, 2025 (Sun)
Walking
8 mi, 17 mi, 25 mi, 30 mi
Trail running
8 mi, 17 mi, 25 mi, 30 mi
Cheltenham Half Marathon
5 (1)
Cheltenham, United Kingdom
21 Sep, 2025 (Sun)
Running
1 mi, 10 km, 21.097 km
IRONMAN Wales
Tenby, United Kingdom
21 Sep, 2025 (Sun)
Triathlon
3.8 km
180 km
42.195 km
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