TAKE an "O" out of Woodstock, swap guitars for barbells and world peace for fitness feats - this is the formula behind an Ipswich gym's gruelling new competition.
WODStock, part pun and part acronym of the CrossFit movement's famous Workout Of the Day challenges, will draw 300 athletes to Ipswich tomorrow.
CrossFit Ipswich will host the local round of the regional competition, titled The Battle in the Switch II, from 8am.
Ipswich gym owner and WODStock director Shaune Irving said he expected a crowd of 1000 spectators and athletes to attend the Limestone Park event.
"We've had a lot of interest, it should be great," Mr Irving said.
"There will be a lot of athletes from all over south-east Queensland keen to secure their place in the top 20.
"The top individuals and teams will go on to compete in Brisbane against rivals from Toowoomba, Mooloolaba and more."
Mr Irving said the competition would involve a series of secret challenges, kept confidential so athletes "prepared for anything".
"The competition will reward the people who have completed a wide range of training and demonstrate fitness across a range of fields."
Proceeds from WODStock will go to CrossFit's fundraising campaign Koins for Kenya, which is aimed at raising $15,000 to build a school in Kenya.
Mr Irving said funds would be raised through competitor entry fees and spectator donations.
"The WODStock series is an opportunity to harness the power of our growing CrossFit community and make a difference to something bigger than us," he said.
CrossFit is a movement that focuses on high-intensity workouts. WODStock's Ipswich round will run on the Bill Paterson Oval, with spectators welcome.