Multisport
Triathlons near London
Looking for a triathlon near London? Explore OneRace’s confirmed triathlon calendar and compare the exact location, available formats and race-day requirements before entering.
COMPARE TRIATHLON DISTANCES
Compare the events below, one row per race format. Only confirmed course distances are shown.
| Event / Date | Format | Swim (m) | Bike (km) | Run (km) |
|---|---|---|---|---|
| One for the Planet - Dorney Lake 16 May 2027 · Dorney | Standard Triathlon | 1,500 m | 40 km | 10 km |
| One for the Planet - Dorney Lake 16 May 2027 · Dorney | Sprint Triathlon | 750 m | 20 km | 5 km |
| One for the Planet - Dorney Lake 16 May 2027 · Dorney | Super Sprint Triathlon | 400 m | 10 km | 2.5 km |
| One on the River - Marlow 30 May 2027 · Higginson Park, Marlow | Middle Triathlon | Not confirmed | Not confirmed | Not confirmed |
| One on the River - Marlow 30 May 2027 · Higginson Park, Marlow | Standard Triathlon | Not confirmed | Not confirmed | Not confirmed |
| One on the River - Marlow 30 May 2027 · Higginson Park, Marlow | Sprint Triathlon | Not confirmed | Not confirmed | Not confirmed |
| One on the River - Marlow 11 Jul 2027 · Higginson Park, Marlow | Middle Triathlon | Not confirmed | Not confirmed | Not confirmed |
| One on the River - Marlow 11 Jul 2027 · Higginson Park, Marlow | Standard Triathlon | Not confirmed | Not confirmed | Not confirmed |
| One on the River - Marlow 11 Jul 2027 · Higginson Park, Marlow | Sprint Triathlon | Not confirmed | Not confirmed | Not confirmed |
| One on the River - Henley 8 Aug 2027 · Henley-on-Thames | Formats not confirmed | Not confirmed | Not confirmed | Not confirmed |
| One on the Lake - Dorney 5 Sep 2027 · Dorney Lake | Formats not confirmed | Not confirmed | Not confirmed | Not confirmed |
One for the Planet - Dorney Lake
One on the River - Marlow
One on the River - Marlow
One on the River - Henley
One on the Lake - Dorney
Choose a triathlon near London
OneRace lists the actual event town rather than describing out-of-London venues as London. Open each event page to compare the confirmed formats and location before booking.
Triathlon arrangements vary by edition. Review the event-specific swim, bike and run information, transition guidance and race-day notes whenever those details have been approved.