ATW Centurion 100KM Triathlon Box End
Sun 18 May 2025 Bedford, Bedfordshire, UK

ATW Centurion 100KM Triathlon Box End

Challenge yourself to tackle a 100km Centurion this year, a distance made popular by the PTO race series. Ideal if you're training for a 70.3 Half-Iron or taking a step up from Standard Distance Tri.

  • Sun 18 May 2025
Box End Park, Bedford

ATW Centurion 100KM Triathlon Box End

07:00

Age 18 & over on 31 Dec 2025

£120-£140

  • 2250 m lake swimming
  • 80 km road cycling
  • 20 km trail running
  • Event village
  • Newcomers
  • Park
  • Sustainability policy
  • Undulating

Overview

Brought to you by the largest multisports organiser in the UK.

The Metric Centurion distance involves a 2.2km swim in the crystal clear Box End Lake, an 81km road bike on fast country roads, and finishing with a 20km offroad run. This 100K triathlon distance being made popular by the PTO race series, is ideal for anyone who is training for a 70.3 Half-Iron distance or simply wanting to take the next step up from a Standard distance triathlon.

Camping is available so you can really make a weekend of it and enjoy the exciting vibe with friends, family and fellow sportspeople.

Highlights

  • Stunning clear waters 
  • Beautiful scenery 
  • Well marked courses
  • Club camaraderie 
  • Supportive marshals 
  • Free event photos
  • Custom designed medal
  • Finish line snacks and goodies

In pictures

Event details

  • All fitness levels
  • Event village
  • Newcomers
  • Spectators
  • Swim hat required
  • Teams
  • Wetsuit advised
  • Wetsuit not allowed if too hot
  • Wetsuit required if too cold

  • Camping
  • Paid parking
  • Park

Event HQ

Box End Park
Box End Road
Box End
Bedford
Bedfordshire
MK43 8RQ
UK

Parking

Parking is available at Box End Lakes.

  • Distance markers
  • Marshals
  • Undulating
  • Water stations
  • Way markers

Route overview

The Metric Centurion distance involves a 22250m swim in the crystal clear Box End Lake, an 80km road bike on fast country roads, and finishing with a 20km offroad run. This event has a non-draft legal bike leg. 

Who it's for

Transgender athletes are, and will continue to be, very welcome at recreational and competitive activity in Triathlon. At any competitive event from 1st January 2023, there will be a Female category open to athletes who are the female sex at birth and an Open category open to all other athletes.

  • Sustainability policy

Here are the ways this event cares for the environment:

Summary

  • Recycling bins
  • Recycling gets separated from general waste
  • Finish line water bottles made from recycled material
  • Refill taps are provided so participants can bring their own bottle and fill up during the event
  • The choice of paper cups at water stations
  • Signage including course marking attached with reusable garden wire instead of plastic cable ties
  • 'Dynamic bib assignment’ removes the need for envelopes, sticker labels and excess waste
  • Bike racking is provided to promote cycling to the events

  • Goody bag
  • iTAB
  • Medal
  • Race photo

Included

Finishers will receive:

  • Custom designed medal
  • Finish line snacks and goodies
  • Unique triathlon experience

Optional extras

  • British Triathlon Federation Race Pass (£8)
  • ICE band (£22.94)
  • Personalised medal insert (£9)

  • Age 18 & over on 31 Dec 2025
  • Entries open

Team relay

For teams of 2 or 3 people to share the disciplines between them.

Entry fees

Entry fee

£120.00

Team entry fee

£140.00

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