RAYMOND LAI

17 races in the archive

Personal bests

Marathon

4:10:51

2015 · 9:34 /mi

Half Marathon

1:50:26

2011 · 8:25 /mi

10K

47:54

2015 · 7:43 /mi

Progression

Half Marathon2 finishes · best 1:50:26 in 2011 · latest 1:59:03 in 2019
1:52:301:56:40201120192011 2011 McDonald's Half Marathon — 1:50:261:50:262019 2019 Markel Richmond Half Marathon — 1:59:03

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

10K14 finishes · best 47:54 in 2015 · latest 1:10:37 in 2026
50:001:06:40201120122013201420152016201720182019202220232024202520262011 10K — 55:282012 10K — 49:582013 10K — 49:202014 10K — 50:462015 10K — 47:5447:542016 10K — 48:332017 10K — 58:492018 10K — 55:182019 10K — 52:342022 10K — 1:08:202023 10K — 1:04:572024 10K — 1:11:482025 10K — 1:03:432026 10K — 1:10:37

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

Half Marathon — pace by segment2 of 2 editions shown
8:208:409:009:20Start–10K10K–Finish2019 · Start to 10K · 8:49 /mi2019 · 10K to Finish · 9:19 /mi20192011 · Start to 10K · 8:31 /mi2011 · 10K to Finish · 8:21 /mi2011

Minutes per mile over each stretch of the course. Lower is faster, so a line rising to the right means slowing down. Colour runs pale for the earliest editions to dark for the most recent; tap a year to show or hide it.

10K — pace by segment6 of 9 editions shown
8:2010:0011:40Start–5K5K–Finish2026 · Start to 5K · 11:49 /mi2026 · 5K to Finish · 10:55 /mi20262025 · Start to 5K · 9:49 /mi2025 · 5K to Finish · 10:42 /mi20252024 · Start to 5K · 11:27 /mi2024 · 5K to Finish · 11:40 /mi20242023 · Start to 5K · 10:34 /mi2023 · 5K to Finish · 10:20 /mi20232022 · Start to 5K · 10:44 /mi2022 · 5K to Finish · 11:16 /mi20222019 · Start to 5K · 8:21 /mi2019 · 5K to Finish · 8:34 /mi2019

Minutes per mile over each stretch of the course. Lower is faster, so a line rising to the right means slowing down. Colour runs pale for the earliest editions to dark for the most recent; tap a year to show or hide it.

Race history