Her unofficial record mileage is 281.2 miles at the 24 Hours of 9 - Mile in Wisconsin .
Pua has won the National title 3 out of the last 4 years .
Pua 's unofficial record mileage is 281.2 miles at the 24 Hours of 9 - Mile in Wisconsin .
Pua has won the National title 3 out of the last 4 years .