Stewartby Lake Triathlon

Stewartby Lake, Bedford
Sorry, bookings for this event have been paused due to a certain virus. Visit our blog post for more details.

Organiser's Description

Located at the Stewartby Sailing Club, in Bedford, this venue is perfect for triathlon. You will be treated to a dip in the beautiful lake waters, followed by a very fast, reasonably flat lapped road bike course, finishing with a scenic traffic-free run on paths alongside the lake into Marston Vale Country Park. Options for Standard and Sprint individual and relay triathlon, also standard and sprint aquabike.

This is a mass-start event, and all finishing positions will be calculated based on gun time and not chip time. This is a non-draft legal race for athletes of all abilities.

Start Time



  • Sprint Individual
    £63.60 BOOK
  • Standard Individual
    £74.20 BOOK
  • Sprint Relay Price per team
    £84.80 BOOK
  • Standard Relay Price per team
    £95.40 BOOK
  • Aqua-Bike Sprint
    £58.30 BOOK
  • Aqua-Bike Standard
    £68.90 BOOK

Finishers medal for all

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

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

Changing rooms will be available

Marshalled baggage area

Water will be provided once on each lap of the run, and at the finish

Portaloo toilets will be provided for the event

Stewartby Lake, Green Lane, Bedford MK43 9LY

By road: The A421 bypasses Bedford to the South (and continues towards the M1). Leave the A421 at the Marston Moretaine exit. At the roundabout take the first exit towards Marston Moretaine. At the next roundabout - Marston Mortaine village roundabout - turn left towards Stewartby. After 1 mile take the second right turn towards Stewartby (Green Lane). After around 1/4 mile you will see the lake on the right. Continue a little further and the road will bear left towards a level-crossing. At this point the entrance to the club is on the right. Use postcode MK43 9LY for your Satnav.

By Rail: The nearest train station is only 300m from race HQ! Stewartby Station, Bedford MK43 9LZ

Parking is available near to the lake with a £2 charge payable at 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.

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.

All competitors must comply with BTF rules including being licensed to race.

Non-BTF members are required to pay £6 in cash on race day for a day license. BTF Members who cannot produce a valid BTF race license are required to pay for a day license.

Minimum age: Standard: 17yrs; Sprint: 15yrs (On/before 31 Dec 2020)

Changing rooms are available.

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.

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 for athletes of all abilities.

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

The race consists of an open water swim, a very fast bike leg on roads, and a traffic-free off road run on paths

Standard - 1500m Swim | 37km Bike | 10km Run
Sprint - 750m Swim | 20km Bike | 5km Run

Stewartby Run Map
Stewartby Bike Map
Loading Map

Booking on has closed for this event 🙁

Please contact the race organiser direct to see if they are still accepting entries.

  • Sprint Individual
    £63.60 CLOSED
  • Standard Individual
    £74.20 CLOSED
  • Sprint Relay Price per team
    £84.80 CLOSED
  • Standard Relay Price per team
    £95.40 CLOSED
  • Aqua-Bike Sprint
    £58.30 CLOSED
  • Aqua-Bike Standard
    £68.90 CLOSED


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