i was also curious about this a while ago and checked it out myself.. entering all the stats and stuff came up with this… top 100 meter guys primarily (if the info online i found was correct)
Top Sprinters BMI
Usain Bolt- 6’4″, 198lbs 24.1bmi
Asafa Powell- 6’3″ 193lbs 24.1bmi
Justin Gatlin- 6’1″ 183lbs 24.1bmi
Tim Montgomery- 5’10” 160lbs 23.0bmi
Maurice Greene- 5’9″ 175lbs 25.8bmi
Donovan Bailey- 6’0.5″ 182lbs 24.3bmi
Carl Lewis- 6’2″ 175lbs 22.5bmi
Calvin Smith- 5’10” 152lbs 21.8bmi
Richard Thompson- 6′ 176lbs 23.9bmi
Walter Dix- 5’9″ 190lbs 28.1bmi
Overall average- 6 foot, 178.4lbs BMI- 24.17