In Gramps' Shoes (2014)

After 20 years of praying for his daughter to let him back into her life, 65-year-old Ty gets his wish when the prodigal requests his help in dealing with a financial bind and her rebellious teenage son. Ty's first encounter with his grandson, whom he has never met, leads to a challenge for a 2-mile race that alters the life course of the young man--and that of the grandfather.