She said the five clubs had already contributed $10,000 each and they wanted to increase that to $100,000 overall to create an endowment through the Geyser Foundation.
"There's an ultimate goal and it's a philanthropic one," she said.
"It's a legacy. This shows the generosity and the manaakitanga of our community.
"We're so connected in Rotorua. Other centres don't have that heart for their local organisations. This event will have the largest service organisation and community collaborative effort and when the going gets tough we'll be able to think of why we're doing it."
This is Ms Bell's 11th Rotorua Marathon. Among the Rotary Club of Rotorua Sunrise members and associates are first-timers, people running and others walking. They will also be manning the drink station opposite Skyline Rotorua with 20 volunteers. Among them will be club president Sue Gunn, who had to pull out of the half marathon due to injury.
"People in the club who aren't participating have picked up the responsibility of helping others with sponsorship," Mrs Gunn said.
"I've been really impressed - when you start talking to people and they say they are running they want to do it for hospice. They feel they have got a purpose."