The four-day race in southern China, near the border with Vietnam, attracted tens of thousands of ardent spectators at the inaugural event last year.
Allan (24) will begin racing with New Zealand team-mates Stu Lynch, Fleur Pawsey and Nathan Peterson on April 24.
The course for the four-day race will be revealed the night before the start and navigational techniques will be a big factor in the event, unlike the three-day staged Wulong Adventure Quest in China, in which Allan's team placed ninth in September last year.
Allan said his challenges would include humidity and risk of dehydration.
The temperatures would soar to the mid-30s during the day but could drop dramatically at night.
Activities would include mountain biking, running, kayaking, rafting, caving and abseiling "plus a few special activities they like to keep hidden".
Allan was looking forward to the unexpected, which in Wulong had included some grass skiing.
"Adventure racers have to be prepared for anything," he said.
Allan has won the past three Central Otago Gold Rush multisport races, was second in the Coast to Coast longest day event this year and finished third in the Wakatipu Cycle Club's Tour de Lakes at Easter, a result he felt was encouraging.
Allan said he was exploring road cycling for its potential to provide him with a sports career but said his heart was still with multisport at the moment.
A return to next year's Coast to Coast is on the cards, depending on his form.
After China, Allan intends to take a break in Australia and then return to Wanaka before taking up a three-month contract as a kayak expedition guide in Canada from June.
Allan is not sure whether to return to Wanaka next spring or to move to Nelson to be closer to a larger kayaking community.
He intends to race in the Anaconda Adventure Race in Perth in November.
