WILLIAM O'BRIEN

2 races in the archive

Personal bests

10K

51:58

2006 · 8:22 /mi

Progression

10K2 finishes · best 51:58 in 2006 — their most recent
53:2056:40200520062005 10K — 56:102006 10K — 51:5851:58

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

Race history