The big battle took place in Chicago in November 1875 with O'Leary emerging victorious with 503 miles ( 810 km ) .
Weston finished with 451 miles ( 726 km ) .
The big battle took place in Chicago in November 1875 with O'Leary emerging victorious with 503 miles ( 810 km ) and Weston finished with 451 miles ( 726 km ) .