About
Dive into the Marlow Triathlon on, where you'll swim the Thames, cycle scenic hills, and run riverside paths through picturesque Marlow. With Sprint, Olympic, and Half Iron distances, this event offers a thrilling challenge for all levels, complete with chip timing, free race photos, and an epic finish-line atmosphere.Half Iron Triathlon, Half Iron Triathlon Relay, Charity - Half Iron Triathlon, and 4 more
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Sun, Jul 19, 2026
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Marlow, United Kingdom
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Where and when
Location: Higginson Park, High St, Marlow SL7 1AW, UKStart times
Sunday, Jul 19, 2026
- Half Iron Triathlon: 7:00 AM
- Half Iron Triathlon Relay: 7:00 AM
- Charity - Half Iron Triathlon
- Olympic Triathlon: 8:30 AM
- Charity - Olympic Triathlon: 8:30 AM
- Sprint Triathlon: 10:00 AM
- Charity - Sprint Triathlon: 10:00 AM
Event summary
Here are the distances available for Marlow Triathlon July 2026Sprint Triathlon
Swim: 0.75km | Bike: 23km | Run: 5kmOlympic Triathlon
Swim: 1.5km | Bike: 38km | Run: 10kmHalf Iron Triathlon
Swim: 1.9km | Bike: 86km | Run: 20kmRoute information
We’re returning to Higginson Park for the Marlow Triathlon on Sunday 19th July 2026, following the success of our inaugural event earlier this summer.Swim in the River Thames, cycle through the scenic Chiltern countryside, and finish strong with a riverside run across the park. With stunning views and a well-organised setup, it’s a must-do event to kick off your summer season.
Whether you're taking on your first triathlon or chasing a personal best, this event offers Sprint, Olympic, and Half Iron distances. Each race begins with an open-water swim in the River Thames, followed by scenic bike routes through the rolling Chiltern countryside, and finishes with a run on grassy terrain in the heart of Marlow.
This is your chance to race in one of the most beautiful triathlon locations in the UK. With a riverside start, closed roads, and a buzzing event village, the Marlow Triathlon delivers a memorable challenge for every level of athlete.
Half Iron Triathlon
Swim: 1.9km | Bike: 86km (Elevation: 806m) | Run: 20km (Elevation: 68m)
Olympic Triathlon
Swim: 1.5km | Bike: 38km (Elevation: 333m) | Run: 10km (Elevation: 34m)
Sprint Triathlon
Swim: 750m | Bike: 23km (Elevation: 176m) | Run: 5km (Elevation: 17m)
What's included
- Bespoke Finisher's Medal
- Chip-timed results
- Free Race Photos
- Post race goodies
- Water stations
- Marked route
- Marshals
- Toilets
- Baggage drop
How to get there
Higginson Park, High St, Marlow SL7 1AW, UKGet full directions
PARKING/TRAVEL
There are a number of car parks in Marlow town centre. We recommend using parkopedia.com to find a space. We recommend arriving early and planning your journey in advance.
Event day logistics
07:00 am - Half Iron Triathlon start08:30 am - Olympic Triathlon
10:00 am - Sprint Triathlon
16:00 pm - Race End
CUT -OFF TIME
There is a 9 hour cut-off on the Half Iron triathlon:
Swim - 1 hour 15 minutes
Cycle - 4 hours 30 minutes
Run - 3 hours 15 minutes
MINIMUM AGES
Half Iron - 18 years and above
Olympic Triathlon - 17 years and above
Sprint Triathlon - 15 years and above
