Yes! The Dual-Position Seatpost is legal for use in any non-drafting triathlon. 

That includes all Ironman events, USAT sanctioned events, and the vast majority of triathlons worldwide. The only events where the seatpost is not permitted are draft-legal events, which are relatively uncommon. 

If you're wondering about a specific race, shoot us an email at and we'll help you figure it out.