A woman has been arrested over the hit and run of a cyclist in Ballarat on Good Friday that left a young father fighting for his life.

Christian Ashby, 36, was riding his bike near Lake Wendouree just after 6am on March 25 when a silver Mitsubishi Lancer veered onto the wrong side of the road and hit him.

Christian Ashby, 36, was hit while riding his bike. Credit:Ballarat Courier

He was flown to the Royal Melbourne Hospital in a life-threatening condition with severe leg and head injuries.

Police arrested a 23-year-old Mount Pleasant woman at 1.30pm on Thursday in Altona North following a week-long hunt for the driver. She is yet to be charged.