PENRITH grandmother and granddaughter, Jackie and Brittnee Robinson and family are stepping out for Jackie's infant granddaughter Marley Cunningham, who has cerebral palsy.
The one-year-old lives in the Central Coast town of Gwandalan with her parents Amy and Dean Cunningham.
Mrs Cunningham is Mrs Robinson's daughter and Brittnee's aunt.
Marley's parents, grandmother and cousin have formed a walking team: Marley's Crew.
They are raising money for the Cerebral Palsy Alliance during STEPtember, a global health campaign which encourages participants to walk 10,000 steps each day from September 4 until October 2.
"Seeing how cerebral palsy affects my little cousin made me want to do something to help," Miss Robinson said.
"Marley's love of life and her determination are so inspiring that Nan and I can't wait to get out there and start clocking up our steps.
"This helps us to raise money for the Cerebral Palsy Alliance, not only helping Marley, but also other kids like her."
Mrs Robinson said she was excited about doing something for her granddaughter and was glad little training was needed.
"I was told the average office worker does, on average, 2500 steps a day," she said.
"It's good to do something for Marley; for her to have as normal a life as possible."
Mrs Cunningham said she and her husband were grateful for such support.
"It's good to have my family and the Cerebral Palsy Alliance helping us," she said. "They do a lot of things to help children like Marley."
Marley's father said their daughter fortunately had a diagnosis of only mild cerebral palsy.
"But we still need help and I see how much the alliance does for us," Mr Cunningham said.
"I would also like to help children whose condition is worse than Marley's."
Sponsorship details for Marley's Crew: steptember.org.au.