Her personal best time was 2 hours , 33 minutes , 1 second at Grandma 's Marathon in Minnesota .
Welzel was the U.S. Marathon champion in 1990 .
Welzel 's personal best time was 2 hours , 33 minutes , 1 second at Grandma 's Marathon in Minnesota .
Welzel was the U.S. Marathon champion in 1990 .