Stewartby Lake Triathlon

This event is organised by Active Training World

 Sunday 17th June 2018

Back for its third year! This event will feature sprint and standard distance race. 

Anybody can enter this triathlon!

Online entries:Pay by major credit/debit cards



If you would also like to support this race then contact us at

icon Registration

Race numbers and timing chips will be collected at Stewartby Lake on the morning of the race. Registration will open at 06:30am and close at 07:15am. Please arrive in plenty of time to collect your registration pack and set up in transition.

Detailed race notes will be sent out a week before the race and will also be posted on this page. 

icon Event Profile

Event Name

Stewartby Lake Traithlon

Event Distance

Sprint: 750m open water swim, 20k bike and 5k run. Standard: 1500m open water swim, 40k bike and 10k run. 


The bike course is fast and reasonably flat and the run course is on paths around the lake. Once again, a very fast course.


Yes - minimum 2 and maximum 3. When registering please order athletes as 1. swim, 2. bike, 3. run


Water will be provided and at the end of the race and on the run laps




The bike will not be traffic free but the run will be traffic free.







a) An 5% online service fee will be applied at checkout. b) A £5 BTF licence fee is payable on the morning of the race for non-BTF members.


icon Prizes

Medal and souvenir for all finishers.

Overall 1st, 2nd, 3rd male and female prizes.

Age group prizes in in BTF 10 year bands for fastest male and female in each age group.

icon Course Information

The race starts and finishes in the same location at Stewartby Lake near Bedford.

The race consisits of an open water swim, an on-road bike leg and a run on paths.




icon Training Plans

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


Other Race Information

Race Start
Wave start times and swim times will be available closer to the event date. The race briefing is compulsory before the start.

Parking and Toilets
Parking is available near to the lake with a £2 charge payable at registration. Toilets will be provided.

BTF rules
All competitors must comply with BTF rules. We strongly recommend that you read them HERE. Only competitors wearing their ID will be allowed in or out of the transition area.

BTF licence fee
A £5 BTF licence fee is payable on the morning of the race for non-BTF members. BTF members must produce their license at registration or a £5 levy will be charged.

If circumstances deem the course to be unsafe or it falls outside the BTF guidelines, ATW have the right to change, move or cancel the event at short notice.


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

DECLARATION: I declare that I am medically fit to compete & understand that I do so entirely at my own risk. 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. I understand the organisers reserve the right to alter the arrangements and conditions should circumstances require. I understand that this event has a 3 hour time limit after which the organisers cannot guarrantee there will be marshals or timekeepers

No refund will be made to any entrant not completing the race.

The last date for refund or deferral requests is June 1st 2018. A 75% refund will be given if requested before this date.

You can transfer your place to another athlete up to June 23rd 2018

No refund, transfer or deferrals accepted after June 23rd 2018

LOCATION: Stewartby Lake, Green lane, Stewartby, Bedfordshire, MK43 9LY

Location: Stewartby Lake, Green Lane, Stewartby, Bedfordshire, MK43 9LY