Tobias Weller, a 9-year-old from northern England, who requires a mobility device to move, finished a full 26.2-mile marathon-length relay up and down the street where he lives.
His socially distanced community cheered him on along the sidelines as he crossed the finish line on Sunday.
His has raised $107,000.
Weller, who also has autism, started his race 70 days ago. Gradually, he worked his way up to half a mile a day.