Thames Marathon (Henley Swim)
Sun, 9 Aug 2026 · River Thames, Marlow
Long-distance Thames swim with 5.5km, 9km and 13km options along the Marlow/Henley stretch. One of the UK’s premier river swims.
Key Details
- Date
- 9 August 2026
- Location
- River Thames, Marlow
- Distance / Category
- Swimming - Open Water
- Organiser
- Other
- Discipline
- Open Water Swimming
- Region
- South East
Entries are handled on the organiser’s own website.
What to Bring
A recommended kit list for open water swimming events like Thames Marathon (Henley Swim):
- ▸A 5-year-guaranteed Ultra Dry bag to keep kit dry
- ▸Wetsuit and tow float
- ▸Brightly coloured swim cap and goggles
- ▸Anti-chafe and warm layers for after
- ▸Flask of something hot and a change of clothes
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Hampshire Masters Distance Championships
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