Despite the hardships, it is addictive. It tests your limits, __________ . It makes you feel alive.

not having or being denied things you want or need

But to me, nothing beats it. It's the _________

Extreme endurance events ________ my understanding of myself.

Psychologically and physically, it's extremely _______ .

Very few athletes crossing the finishing line end, it's so _______ .

Weather conditions in the Arctic are _________ at the best of times and during the race....