By Michelle Costa, Local News 8 Reporter

POCATELLO - The Gold's Gym in Pocatello is challenging you to an indoor triathlon on Halloween morning.

The event starts at 7 am on Saturday.   

Participants will complete a three-hour indoor triathlon.

It will include running, spinning and swimming.

The gym has room for 20 people and there's no gym membership required.

It costs $20 to sign up. All the money goes for local breast cancer awareness.

"All of the money that we're raising is to support local families that have been affected or know somebody and they'll be using it to help with mammograms and chemotherapy and things like that," said Mandy Curtis, Gold's Gym.

While this is a noncompetitive triathlon, there will be prizes.