Math below,

First Run Starts at: 0:20 Ends at: 3:13 Total time: 2:53

Second Run Starts at: 3:30 Ends at: 6:54 Total time: 3:24

Third Run Starts at: 7:09 Ends at: 10:27 Total time: 3:18

Fourth Run Starts at: 10:41 Ends at: 13:46 Total time: 3:05

Fifth Run Starts at: 14:01 Ends at: 17:37 Total time: 3:36

Fastest: First run at 2:53 Slowest: Fifth run at 3:36

Other three runs: 3:24 + 3:18 + 3:05 = 9:47