JOHN SHIFFER

4 races in the archive

Personal bests

10K

59:45

2009 · 9:37 /mi

8K

47:31

2007 · 9:34 /mi

Progression

10K3 finishes · best 59:45 in 2009 — their most recent
58:201:02:301:06:402007200820092007 10K — 1:00:072008 10K — 1:08:242009 10K — 59:4559:45

Lower on the chart is faster — a line falling to the right means improvement.

Race history