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Endurance races calendar in September 2025 - 2026 in the United Kingdom

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
 +1 more
This event also offers:Swimming, Aquabike
From
33 USD
The One on the River - Henley

IRONMAN Wales

Tenby, United Kingdom
21 Sep, 2025 (Sun)
Triathlon
3.8 km
180 km
42.195 km

Hever Castle Multisport Festival

Hever, United Kingdom
26-27 Sep, 2025 (Fri - Sat)
Triathlon
400 m
20 km
4 km
1500 m
40 km
10 km
 +4 more
This event also offers:Duathlon, Aquathlon, Swimming, Aquabike, Trail running

ATW Dorney Triathlon - September

Windsor SL4 6FJ, UK, United Kingdom
27 Sep, 2025 (Sat)
Triathlon
750 m
20 km
5 km
1500 m
40 km
10 km
 +1 more
This event also offers:Aquabike
From
76 USD
ATW Dorney Triathlon - September

Recommended for you

Brass Monkey

Deepcut, United Kingdom
12 Sep, 2021 (Sun)
Mountain biking
2 hrs, 4 hrs, 6 hrs

Elan Valley MTB Challenge

LD6 5DP, United Kingdom
04 Sep, 2022 (Sun)
Mountain biking
30 km, 55 km

Hell of the North Cotswolds

Winchcombe, United Kingdom
04 Sep, 2022 (Sun)
Mountain biking
50 km, 75 km, 100 km

Breca Urban X Swimrun Liverpool

Liverpool, United Kingdom
09 Sep, 2023 (Sat)
Swimrun
2 km, 8 km

Hammers 8

South Bedburn, United Kingdom
24 Sep, 2023 (Sun)
Mountain biking
8 hrs

Black Mountains MBO - St Arvans

NP16 6EJ, United Kingdom
01 Sep, 2024 (Sun)
Mountain biking

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Halong Bay Heritage Marathon

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14 Sep, 2025 (Sun)
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Ostrava City Marathon

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14 Sep, 2025 (Sun)
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20 Sep, 2025 (Sat)
Nordic walking, Running
From 11 USD22 USD
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5
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Sierra Blanca Estates Marbella Half Marathon

Marbella, Spain
28 Sep, 2025 (Sun)
Running
From 17 USD
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Pisa, Italy
12 Oct, 2025 (Sun)
Running
From 11 USD22 USD
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Up to 50% off
4.8

Garda Trentino Half Marathon

Riva del Garda, Italy
09 Nov, 2025 (Sun)
Running
From 14 USD
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Up to 50% off
4.5

Palermo Marathon and Half Marathon

Palermo, Italy
16 Nov, 2025 (Sun)
Running
From 22 USD44 USD
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Up to 49% off
4.3

Sarajevo Half Marathon

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21 Sep, 2025 (Sun)
Running
From 29 USD57 USD
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XI Stellantis&you port de palma triathlon mallorca

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21 Sep, 2025 (Sun)
Triathlon
From 25 USD46 USD
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Murcia Marathon

Murcia, Spain
01 Feb, 2026 (Sun)
Running
From 16 USD26 USD
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Vi Thanh, Vietnam
06 Jul, 2025 (Sun)
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From 22 USD39 USD
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Up to 43% off
4.5

Sunshine Coast Marathon Festival

Mooloolaba, Australia
03 Aug, 2025 (Sun)
Running, Walking
From 23 USD33 USD
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Up to 42% off

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Jollekappseglarna Västerås, Sweden
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15 Nov, 2025 (Sat)
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From 25 USD
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Up to 54% off
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Timișoara, Romania
08 Mar, 2026 (Sun)
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El Pilar de la Mola, Spain
01 Jun, 2025 (Sun)
Running
From 329 USD
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Snetterton, United Kingdom
30 Jul, 2025 (Wed)
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From 25 USD
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Ao Nang, Thailand
06-07 Sep, 2025 (Sat - Sun)
Running
From 17 USD20 USD
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Karon Beach, Thailand
16 Feb, 2026 (Mon)
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15 Feb, 2026 (Sun)
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21 Sep, 2025 (Sun)
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20-21 Dec, 2025 (Sat - Sun)
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