Racing Quest (UK) Limited was solely created to host UMUK - UK's only ultraman-distance event.

Our flagship event, UMUK 515 is widely considered one of the toughest ultra-distance staged triathlons in the world due to its +21,500 feet of ascent, with both long gradual and short but brutally steep climbs.

Entry to UMUK events are by invitation only. Organisers will select and invite a maximum of 20 athletes per event on a first come, first served basis as the applications are received and if otherwise qualified.