As Tauranga woman Kimberley Ward battles breast cancer, her personal trainers are fighting a different battle – to raise funds for her in a 12-hour relay.

Beyond Personal Trainers Dave Jaggs and Sophie Irving are challenging residents to run a relay around Tauranga Domain racetrack non-stop from 8am to 8pm on September 20 in support of Kimberley.

Dave Jaggs, Jason Whitelaw, Kimberley Ward and Sophie Irving.

Joining the training group in November 2012, Kimberley, 46, attended the 6am boot camps as many as three times a week before she being diagnosed with grade three breast cancer in March.

'Kimberley's out of her comfort zone, so we thought we'd do something that's going to put us out of our comfort zones as well,” says Sophie, who admires Kimberley's bravery.

'She's just a goer. She's just going to fight it [cancer] with all of her might.

'She's a secret hard-worker. She doesn't want all of the praise and glory of ‘you're doing really well' – she just puts her heart and soul into everything she does.”

Runners and walkers of all ages and fitness levels can enter individually or in a group of up to 10 people.

Sophie's partner Dave is going one step further by attempting to complete as many laps as he can in 12 hours, asking for $1 donations for every circuit in support of Kimberley.

Sophie hopes to raise $2000 to pay for a mini break away for Kimberley, who is 'truly touched” by the idea.

'In the earlier stages I continued to attend the odd class, but the first morning after losing my hair I arrived to see lots of others had worn beanies as well so I didn't feel out of place,” says Kimberley.

'This personal touch and the people who attend is what makes BPT boot camps so special.”

Kimberley hopes the event will raise awareness for Breast Cancer Support Service Tauranga Trust and is planning on donating some of the money raised.

To register for the event, email sophie@beyondadventureracing.co.nz