ANN ARBOR, Mich. -- A Michigan teenager carrying his seven-year-old brother on his back has battled heat, rain, fatigue and more to finish a 64-kilometre walk to raise awareness about cerebral palsy.

Fourteen-year-old Hunter Gandee walked from his junior high school not far from the Ohio border to the University of Michigan in Ann Arbor. He packed his brother, Braden, throughout the two-day journey.

On Sunday, they strolled up a winding road toward the university's wrestling centre. Asked how he felt, Braden said simply: "Tired."

Hunter acknowledges there was talk of stopping the walk around the 50-kilometre mark due to chafing on his brother's legs.

Called the Cerebral Palsy Swagger, the trek's goal was to raise awareness about cerebral palsy and to put a face on the neurological disorder.