Tri3 Sleaford Triathlon Club was launched in 2013 and is a community club, run by local volunteers. Training sessions are held in Sleaford and the surrounding villages with the aim of encouraging sport for all. We are a sociable club with a growing membership and a well-established junior section.


We welcome triathletes of all abilities from complete novices to experienced age groupers.


Current sessions are held at:

- RAF Cranwell swimming pool

- St George's School


As the weather improves, we will re-start social rides and run sessions. Please see the calendar for more details.


If you are interested in joining our club, you may attend 3 sessions as a taster prior to joining Club. After this, for insurance reasons, you are required to become a member.

Tri3 Sleaford migrates to SportMember

From Jan 24, all club admin and booking sessions will migrate to SportMember. Please download the app and book onto your sessions as usual.  


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Tri3 Sleaford - a community Club where all abilities are welcome