The HSV Triathlon is a pool-based sprint distance triathlon in Hatfield Hertfordshire, organised by Tri-Force triathlon club. The course consists of a 400m pool swim, 20km bike and 5k run. The course is excellent for both new and experienced triathletes alike. Come a try out a new sport, or get your season off to a good start with a PB. Our triathlons are rated excellent by the British Triathlon Federation and consistently attract praise from competitors. We pride ourselves on our friendly and encouraging marshalls, who are all member of Tri-Force and triathletes themselves.