An unnecessarily long and personal recount of a 70.3 Ironman in Andorra - AI, software, tech, and people. Not in that order. By X
Worlds hardest ironman course ? well lets see… - Ironman For beginners
IRONMAN 70.3 Andorra
What is the best Ironman distance triathlon for a first-timer who struggles on the run? I've done Half Ironman races and the run is always the toughest. - Quora
Canada's Ironman-branded bike courses - Triathlon Magazine Canada
Hardest Ironman courses
Ironman 70.3: A Course Comparison | by Tanner Sax | Medium