ZACHARY SHAFFER

8 races in the archive

Personal bests

Half Marathon

2:27:20

2024 · 11:14 /mi

10K

54:56

2025 · 8:50 /mi

Progression

Half Marathon3 finishes · best 2:27:20 in 2024 · latest 2:36:31 in 2025
2:25:502:30:002:34:102023202420252023 2023 CarMax Richmond Half Marathon — 2:33:582024 2024 CarMax Richmond Half Marathon — 2:27:202:27:202025 2025 CarMax Richmond Half Marathon — 2:36:31

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

10K5 finishes · best 54:56 in 2025 — their most recent
50:001:06:401:23:20202120222023202420252021 10K — 1:24:222022 10K — 1:02:532023 10K — 57:352024 10K — 1:06:242025 10K — 54:5654:56

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

Half Marathon — pace by segment3 of 3 editions shown
11:0011:2011:4012:00Start–10K10K–Finish2025 · Start to 10K · 12:02 /mi2025 · 10K to Finish · 11:51 /mi20252024 · Start to 10K · 11:26 /mi2024 · 10K to Finish · 11:03 /mi20242023 · Start to 10K · 11:24 /mi2023 · 10K to Finish · 12:03 /mi2023

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 segment5 of 5 editions shown
10:0013:20Start–5K5K–Finish2025 · Start to 5K · 9:03 /mi2025 · 5K to Finish · 8:38 /mi20252024 · Start to 5K · 11:23 /mi2024 · 5K to Finish · 9:59 /mi20242023 · Start to 5K · 9:05 /mi2023 · 5K to Finish · 9:27 /mi20232022 · Start to 5K · 10:20 /mi2022 · 5K to Finish · 9:55 /mi20222021 · Start to 5K · 11:50 /mi2021 · 5K to Finish · 15:20 /mi2021

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