- Sun 18 May 2025
Centurion 100km Triathlon
07:00
Age 18 & over on 31 Dec 2025
£120-£140
- 2250 m lake swimming
- 80 km road cycling
- 20 km trail running
Event overview
Brought to you by the largest multisports organiser in the UK.
This event is open to everyone, regardless of ability and offers a choice of distances. For those who don’t want to run there is an Aquabike (swim-bike) option. For those who would like to compete as a team, there are relay options too.
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
This event is part of ATW Box End Triathlon.
Event photos
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
- Out and back
- 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.
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
- Enter online
- Event merch available
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
Other races at event
- Sun 18 May
- #1 of 6
Sprint
07:00
Age 15 & over
£78-£99
- 750 m lake swimming
- 26 km road cycling
- 5 km road running
- Sun 18 May
- #2 of 6
Sprint Distance Aquabike
07:00
Age 15 & over
£68
- 750 m lake swimming
- 24 km road cycling
- Sun 18 May
- #3 of 6
Standard
07:00
Age 17 & over
£99-£120
- 1500 m lake swimming
- 40 km road cycling
- 10 km road running
- Sun 18 May
- #4 of 6
Standard Distance Aquabike
07:00
Age 17 & over
£89
- 1500 m lake swimming
- 40 km road cycling
- Sun 18 May
- #6 of 6
Centurion Aquabikus
07:00
Age 18 & over
£100
- 2250 m lake swimming
- 81 km road cycling