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They invented marathons as a challenge, but some thought one sport was not hard enough. So, they added swimming and cycling.
For those who Tri harder, we suggest the Freya Active Sonic Sports Bra or Shock Absorber’s Ultimate Run Bra to keep you moving no matter the terrain.
Looking for a new challenge?
Sophie's Triathlon top tips.
Preparing for your first Triathlon!
Our Top Triathlon Sports Bras!