It depends on the runner.
5.3 seconds for 100 yards.
100
176,000 yards in 100 miles.
Running 100 meters means you have run 109.361 yards.
100 yards = 300 feet
100 yards. I just witnessed it.
90-100 mph
No running back in the history of the NFL could throw a football 100 yards.
1 yard = 3 feet so there are 100 yards in 300 feet
20 mph
10 seconds
1 yard = 36 inches 100 yards x 36 = 3600 inches