08:00
Age 17 & over on 31 Dec 2025
£94-£115
Brought to you by the largest multisports organiser in the UK.
No matter if you are an experienced triathlete looking for a super-fast course to post a Sprint or Standard PB, or a beginner looking for a friendly event to tackle your first triathlon, Stewartby is perfect for you.
You will be treated to a dip in the beautiful lake waters, followed by a very fast, flat, lapped road bike course (probably the fastest bike leg in the country!)
For those completing the aquabike your race will stop at the entrance back in to transition and you'll head off to the finish arch to pick up your well-earned medal. For those competing in the triathlon, you will have a scenic, traffic-free run on flat paths alongside the lake in Marston Vale Country Park.
This event is part of ATW Stewartby Lake Triathlon & Aquabike.
No matter if you are an experienced triathlete looking for a super-fast course to post a Sprint or Standard PB, or a beginner looking for a friendly event to tackle your first triathlon, Stewartby is perfect for you.
Stewartby Lake
Bedford
Bedfordshire
MK43
UK
Car Parking is available for a small charge, in the event car park opposite the venue.
Here are the ways this event cares for the environment:
Finishers will receive:
Entry fee
£95.00
Team entry fee
£115.00
Early bird entry fee
£94.00
Superb event and well organised by ATW. Great course with wonderful support. As always a very well run event with a nice bit of bling at the end. Nathan
Great event. Mainly flat so great for a quick time. Also laps so never too far from transition / water stations etc. Great atmosphere and great support. Well organised. Lucy W
First ever Triathlon and really impressed. Lovely setting with a mostly flat course for running and cycling, the organisers and marshals were friendly, encouraging and helpful. Very well organised, kept you at ease whilst also motivated. May be my first but definitely won't be my last triathlon with them. Mark W
Perfect for a PB or first time. Really well organised and laid out to make transition really straightforward. Plenty of space for families or spectators with great views in a lush countryside setting. Highly recommend. Dan G
This is a great race. The lake is a lovely venue and I enjoyed the swim. The bike course is made for PBs, being flat and fast. The run is beautiful - it's around the edge if the lake on a gravel path. Ben R
Reviews thanks to Racecheck
08:00
Age 15 & over
£73-£95
08:00
Age 15 & over
£62-£65
08:00
Age 17 & over
£84-£85