UK Endurance Events — Est. for Athletes
ONE START LINE.
EVERY DISCIPLINE.
From London 5Ks to half marathons, trails, open-water swims and multisport. Great locations, proper race days and events built for everyone who wants to get out there.
Next Race
One on the River - HenleyAsk Us Anything
YOUR RACE ASSISTANT
Can't find your answer? Send us a quick enquiry and the crew will get back to you within two working days.
01 / Next Up
FEATURED RACES
02 / Who We Are
MORE THAN A RACE A MOVEMENT.
OneRace was founded on a simple belief: every athlete deserves a world-class race day. From your first 5K to your tenth triathlon, we obsess over the details — flawless courses, electric atmospheres, and events that leave the landscape better than we found it.
We're athletes, volunteers, and community builders. Eight disciplines, one standard: exceptional.
03 / Disciplines
PICK YOUR BATTLE
04 / Green Legacy
RACE HARD.
TREAD LIGHT.
Plastic-free aid stations. Wooden medals. Tree planting for every finisher. Sustainability isn't a footnote at OneRace — it's built into every course we design.
05 / Why OneRace
THE ONERACE STANDARD
WORLD-CLASS COURSES
Measured, marshalled and designed by athletes. Every route is a destination in itself.
CHIP-TIMED PRECISION
Accurate timing, instant results and live tracking so every second counts.
COMMUNITY FIRST
First-timers to elites — everyone gets the same electric race-day experience.
SUSTAINABLE BY DESIGN
Plastic-free, tree-planting, low-impact events that give back to the landscape.
06 / Results
CROSSED THE LINE?
FIND YOUR TIME.
07 / The Field Speaks
WORD FROM THE COURSE
The best organised triathlon I've raced in ten years. Every detail was dialled in — I've already entered next year.
Plastic-free aid stations, a stunning course, and a finish-line atmosphere I'll never forget.
My first ever trail race and the marshals made me feel like an elite. The wooden medal is on my wall.
Official Partners
08 / Community
YOUR RACE
STARTS HERE.
Race it. Marshal it. Sponsor it. However you show up, you're part of OneRace.