Wickens said winning the shoot out was an awesome feeling.
"I'm stoked. Last year I had a back injury so it's good to be here in full strength. I haven't done a mountain bike marathon race before, so I will be pacing myself in the Whaka100 tomorrow."
Event director Tim Farmer said he was pleased with how the day went, with so many spectators out enjoying the good weather.
"I couldn't think of a better way for Whaka100 weekend to start. It was awesome to see some riders doing it for fun, as well as those doing it to get a good result."
Top Five Males
Maxwell Wickens 5m 15.4s, Cosmo Bloor 5m 16.49s, Connor Johnston 5m 20.627s, Brad Jones 5m 22.93s, Sam Shaw 5m 27.557s.
Top Five Females
Josie Wilcox 6m 6.067s, Ruby Ryan 6m 20.780s, Mary Gray 6m 34.323s, Imi Blance 6m 40.473s, Poppy Buissink 6m 43.373s.