Box End Triathlon

British Triathlon Major Event


This event is organised by Active Training World

Incorporating the Triathlon England National Sprint Distance Triathlon Championships


This is a mass-start event. All finishing positions will be calculated based on gun time and not chip time.This is a non-draft legal race. To be eligible for Triathlon England Major event titles, entrants must be a member of their home nation association and a British citizen. 

To be eligible for an English Championship medal you must conform to the criteria in Section 24 (particularly, Section 24.4) of the British Triathlon Competition Rules including being licensed to race.You must hold a valid Triathlon England Race Licence, this Race Licence must be validated no later than 5pm, 3 working days before the Championship (5pm, Tuesday 1 September). To validate your race licence please access Your Profile on the BTF website.You must also present your valid Triathlon England Race Licence at the event registration, failure to do so may result in you not being eligible to be awarded an English Championship medal. You will not be eligible for the Triathlon England Championships with a day license. This event is not just reserved for the age-group heroes of triathlon, but for those of all abilities. 

Online entries: Pay by major credit/debit cards


icon Registration

Registration packs will NOT be posted out in advance of the race.

Registration packs can be collected on race day from 5:30am at race HQ.

Non-BTF members are required to pay £6 in cash on race day for a day license. You will not be eligible for an English Championship medal.

BTF Members who cannot produce a valid BTF race license are required to pay £6 for a day license. You will not be eligible for an English Championship medal.

icon Event Profile


Box End Triathlon


Sprint: 750m Swim | 18.3Km Bike | 5.3Km Run


Swim - Open water
Bike - Road
Run - Off-road




Water will be provided twice on each lap of the run and at the finish.




Bike - No
Run - Yes


17 On/Before 31 Dec 2020
(Under 17s with Parental Consent)





The higher of a £1 / 6% service fee will be applied at the checkout.



This race is supported by Better and The British Triathlon Federation. 

Active Training World are proud to support the Triathlon Trust, the official charity of British Triathlon. 

We actively welcome support and involvement from local communities, businesses and individuals. If you would like to find out more about marshalling, sponsorship or group bookings please contact us at:

icon Prizes

Finishers medal for all!

Championship Medals for the first three eligible competitors in each age category

Trophies for overall Male 1st, 2nd & 3rd place.

Trophies for overall Female 1st, 2nd & 3rd place.

icon Course Information

The swim takes place in Box End Lake. The lake is primarily used for wakeboarding, so contains lots of wake-boarding jumps. The route is a 750m clock-wise oval lap around the lake, between the jumps. 

The bike route is a 18.3km loop on quiet, yet fast roads.  

The 5.3km run loop is simply fantastic! The route is completely off-road, but is very changable, which makes for fantastic and exciting racing. There will be two water stations. One approximately 100m from transition and the next half way around the loop. On offer will also be High 5 energy gels. 

Swim Course Map

Bike Course Map

Run Course Map

icon Training Plans

ActiveTrainingWorld have free training plans to help you train for this event:


Other Race Information

Race Numbers
You will be provided with two race numbers in your registration pack. Your race number must be clearly visible on your front for the run and on your back for the bike. If you are not using a race belt, please pin one number on your back and one on your front. If you are using a race belt, only one number is required, provided you adjust the position of your race number during each leg of the race.

Parking and Transport
Parking is available at Box End Lakes

Changing and Bag Storage
We will not be providing a changing area, therefore please come changed and ready to race. A marshalled baggage area within transition will be provided so you can keep your warm-up clothes safe during the race.

Toilets will be provided for the event.

ActiveTrainingWorld do not offer transfers or deferrals for this event or any events listed on the website. Instead every person who books an event has the option to purchase "Refund Protection" which allows them to get a full refund of entry fees in the event of an injury, illness or other reasons specified on the policy. The link to claim your refund will be on your confirmation email along with your booking reference number. Terms & Conditions are here


By entering this event you agree to the below terms and conditions:

Your details will be passed onto the event organisers for the administration of the race.

Your name, date of birth and email details will be onto the chip timing company. Personal details will be deleted 1 week after the event.

Where specified on the booking form any medical information will be passed onto the medical team present at the event. 


1) I declare that I am medically fit to compete & understand that I do so entirely at my own risk.

2) I understand that I enter the race at my own risk and that no person(s) or organisation(s) will be held responsible for any accident, injury or loss to myself, prior to, during or after the event.

3) I understand the organisers reserve the right to alter the arrangements and conditions, should circumstances require.

4) By entering this event, the athlete indicates acceptance of BTF rules.

(5) In the unfortunate cancellation of the event through circumstances beyond the control of the race organisers.  I understand that I will be eligible for a free place, up to the same value, in an ATW event taking place in the next 12 months


LOCATION: Box End Lakes, Box End Rd, Bedford MK43 8RN

Location: Box End Lake, Kempston, Bedfordshire, MK43 8RQ