Groot-Brittannië

The London Triathlon
The London Duathlon
Ironman UK, Bolton [LD]
Ironman Wales, Tenby [LD]
Ironman 70.3 UK, Wimbleball [MD]
Challenge Weymouth [LD]
TT Triathlon, Isle of Man [LD]
The Anglian Triathlon, Cromer [LD]
Celtman Xtreme Scottish Triathlon, Wester Ross [LD]
The Big Woody, Ross on Wye [LD]
New Forest Triathlons [LD+MD]
Enduroman Triathlon, Chesil [Ultra LD]
Durty Triathlon, Selkirk
Salford Triathlon
Rower’s Revenge Triathlon, Marlow
Clacton Triathlon
Cornish Triathlon
Edinburgh Racing: triathlon, duathlon, aquathlon (Schotland)
Ocean Lava Wales Triathlon, Fishguard [MD]
Harlech Triathlon (Wales)
Mourne Triathlon (Noord-Ierland)
Lough Neagh Triathlon (Noord-Ierland)
Fun2Tri UK Triathlon Series

Triathlon-organisatiebureaus:

Active Events
Human Race Event Management
Transition Sport
Conceptsport, Multisport Event Organisers
Hedgehogtri Triathlon Event Organiser (Sussex)
Punishing Events (Midlands)
One Step Beyond Promotions
Gears and Tears
Big Cow Events
All About Triathlons
Raw Energy Pursuits
Just Racing

Ierland

Ironman 70.3 Galway[MD]
Ireman, Groomsport[LD]
Hardman, Killarny[LD]
Dublin City Triathlon
Triathlon Athlone
EireMan Cross Triathlon, Wexford
Fingal Sprint Triathlon
TriAthy
Tri to Beat Cancer, Mullingar
Triathlon Chonamara
Irish Triathlon 25.5 Series