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Duncan Tebb is an Australian triathlete. He completed the EPIC5 Challenge in 2017.
The EPIC5 Challenge is a 5-day series of 5 Iron Distance triathlons performed on 5 different Hawaiian Islands:
Day 1 - Kauai
Day 2 - Oahu
Day 3 - Molokai
Day 4 - Maui
Day 5 - Big Island