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River swims in September 2025
Find river swims in September 2025 - filter by date or location, display on a map or use the advanced search to find your perfect race.
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- Sat 6 Sep
- FREE
- Sat 6 Sep
- FREE
Anywhere
Swim Marathon | 26 miles
Take on a challenge like no other as you swim a marathon distance over 12 weeks and lift your health, wellbeing and fitness to the next level.
- Enter online
- Fundraising required
- All ages
- 26 miles pool swimming
- Sat 6 Sep
- FREE
- Sat 6 Sep
- FREE
Anywhere
Swim Marathon | 13 miles
Take on a challenge like no other as you swim a half marathon distance over 12 weeks and lift your health, wellbeing and fitness to the next level.
- Enter online
- Fundraising required
- All ages
- 13 miles pool swimming
- Sun 21 Sep
Henley-on-Thames, Buckinghamshire, UK
The One on the River | Henley | 750M Swim
- 750 m river swimming
- Sun 21 Sep
Henley-on-Thames, Buckinghamshire, UK
The One on the River | Henley | 1500M Swim
- 1500 m river swimming
- Sun 21 Sep
Henley-on-Thames, Buckinghamshire, UK
The One on the River | Henley | 3000M Swim
- 3000 m river swimming