At 6'45" per mile you run 8.89 mph (4'12"/km). 5K in 20'58", 10K in 41'57", half marathon in 1h28'29", marathon in 2h56'59".
6'45"/mile = 8.89 mph
1 track lap = 1'40"7
1 track lap = 1'40"7
At 6'45" per mile you run 8.89 mph (4'12"/km). 5K in 20'58", 10K in 41'57", half marathon in 1h28'29", marathon in 2h56'59".