think about this for a moment:
When the Boston marathon was held this year and a new course record set(crushed really, wind aided heavily)
the average time was 4:41 mile time or an average speed of 13.25 +/- Mile per Hour. This would be a good pace for a normal (fat assed) american on a mountain bike.
Now take into consideration that Usain Bolt covers 200 meters in 20 seconds. Thats 660 feet in 20 seconds,
or 33 FEET per second once at speed, holy fucks sake !
Storm the beach's blogsite has a great dissertation on why it is better to Sprint, Kill, Eat than to be
a jogger...check it out if you have the time !
Anyway...keep up the conditioning and lift Strong(er). Let us know if you end up competing in a track meet !