He said the endurance event was in its third year and had been held in the Southern Hemisphere only once before, in Australia in 2013.
"So to get it down here is not just great for the Kiwis, it's great for the Aussies as well. It is a big deal."
Tim said they expected about 150 riders from overseas to attend and about 350 riders all together, in February 2016.
He said most people knew very little about 24-hour solo racing but it was an awesome discipline. He said riders who completed the event would travel between 350-450km and climb the equivalent of Mt Everest.
"It's a very unique sport."
He said Rotorua was a great fit for the world champs.
"Rotorua has the reputation of [having] the world's best trails. The trails in Rotorua and the environment in Rotorua - there are not many places in the world like it," he said.
"Rotorua has such a long tradition of big events, a world-class trail network only minutes from town, and all the infrastructure of a major tourism destination. And hot pools."
Tim said they already had some great plans for the event and they were looking forward to giving Rotorua even more exposure internationally.
He said the event would be based at Waipa, using trails in the Whakarewarewa Forest.
World Endurance Mountain Bike Organisation (WEMBO) founder Russ Baker said it was great to add New Zealand to the list of countries hosting the top event.
"I'm sure that every rider will be looking forward to Rotorua's legendary Redwood trails," he said.
"As well as being a fantastic mountain biking location, New Zealandalso fits in well with WEMBO's plan to have an alternating hemisphere schedule, following on from Weaverville in California in 2015."
There are currently two 24-hour mountain bike events held annually in Rotorua - the Rotorua Moonride in March and the Nduro24 in January.
The Nduro24 will be two weeks before the 24-Hour Solo World Cross-Country Championships in 2016, and will act as a dress rehearsal for the big event.