He set five (5) American records in the span 7 months from the fall of 1993 to the spring of 1994: 20,000m (track), 25,000m (track), 2 Hour (track), 30 km (road) and 50 km (road).
* From 1906 to 1979, events were conducted by the Amateur Athletic Union. Events from 1980 to 1992 were conducted under The Athletics Congress. Events thereafter were conducted by USA Track & Field.
Distances have varied as follows: Mile walk all years except 1933-1939 when 1500 m walk was contested, 2 miles walk until 1986 (3000 m walk since except for odd years since 2015), 3 miles walk until 1911 (5000 m walk since).
