Mrs Sanders, of Launceston, is the only Tasmanian to ride in this year's Tour de Cure, which is a 1576-kilometre bike ride from Sydney to Hobart to raise funds and awareness for cancer prevention.

She will join 60 riders who will take off in three groups of 20 for the 10-day tour on Friday, March 28.

The group will cover an average 150km a day and will stop at schools to raise awareness of cancer and promote being fit and health, before staying overnight in towns.

The tour is expected to arrive in Launceston on Friday, April 4.

Mrs Sanders said initially she nominated to ride for two days in Melbourne as a guest rider.

``Then I got a call and got asked to do the whole tour because they had a spare spot,'' Mrs Sanders said.

``I feel very proud and honoured to be asked.

``I'm passionate about finding a cure . . . I've had a few friends who have had breast cancer, and so anything we can do helps.''

Mrs Sanders is a spin instructor at Pycsam Health and Fitness, as well as being the Launceston Commonwealth Bank branch manager and a usual contestant in mountain bike races across the state.

he said she was excited for the tour but it would be a challenge.

``I'm extremely nervous, but they have a fantastic support crew, so it should be OK.''

 Mrs Sanders will take a fund-raising spin class at Pycsam Health and Fitness tonight at 7pm to raise funds for the tour. Everyone is welcome and cost is $5 a person. To give Mrs Sanders a tour donation, visit the Tour de Cure website and search for her name under the make-a-donation tab.