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Flatout is coming
London

For three days this September, Flatout takes over the iconic Old Billingsgate Market for one of the most anticipated fitness race experiences in London. Surrounded by Tower Bridge, The Shard, and the city skyline, this is where atmosphere, competition, and community collide.

25–27 September  •  Old Billingsgate Market

FLATOUT venue lit in green at dusk

Race Inside One of London's Most Iconic Event Spaces

Set beside Tower Bridge and moments from some of London's most recognisable landmarks, Old Billingsgate Market delivers a race environment unlike anything else on the Flatout calendar.

Industrial atmosphere. Iconic skyline. Unmatched energy.

From the moment competitors enter the venue, the experience is built to feel bigger, louder, and more electric. Every zone, every station, and every finish-line moment takes place against the backdrop of one of the world's most iconic cities.

This is not just another event location. This is Flatout London.

More Than Race Day

Flatout London brings together competition, atmosphere, and community for a full-scale event experience designed for every level of athlete.

Across the weekend, participants will take on Flatout's signature race format through a series of high-intensity zones combining endurance, strength, movement, and grit.

Whether you're stepping onto the course for the first time or chasing your strongest performance yet, Flatout London is built to test limits and create unforgettable moments.

What's Included

  • Flatout race experience
  • Electric event atmosphere
  • Athlete warm-up zones
  • Spectator energy throughout the venue
  • Professional race-day production
  • Finish-line experience in the heart of London

Event Categories

  • Solo
  • NextGen
  • Sidekicks
  • Doubles
  • Elite
  • Relay
Junior athletes on the start line at a FLATOUT event

Sidekicks Launches in London

Flatout London will officially introduce Sidekicks – a brand-new race experience built for adults and juniors taking on the challenge together.

Designed around teamwork, encouragement, and shared achievement, Sidekicks brings a completely new energy to race day. Teams move through the course side by side, supporting each other through every zone and crossing the finish line together.

This is more than participation.

It is a shared experience built through movement, challenge, and connection.

Sidekicks Includes

  • One adult + one junior team format
  • Adapted race distances
  • Shared race experience
  • Supportive and high-energy environment
  • Exclusive London launch event

Capture the Moment

Every participant will receive a professional race-day photo with Tower Bridge as the backdrop included as part of the event experience.

After the final zone and the final push to the finish line, competitors will walk away with more than a result. They will leave with a moment captured in one of London's most iconic locations.

A finish-line memory worthy of the challenge.

Event Information

Venue: Old Billingsgate Market, London

Dates: 25–27 September

Categories

  • Solo
  • NextGen
  • Sidekicks
  • Doubles
  • Elite
  • Relay
FLATOUT London event

Be Part of Flatout London!

This September, Flatout arrives at one of London's most iconic venues for three days of racing, atmosphere, and unforgettable moments.

From elite competitors to first-time participants, Flatout London is built for those ready to step onto the course and experience the energy for themselves.

Two runners at FLATOUT London