Progress against the field
Derek Mackessy has dropped 12:20 behind the field from Dublin 2024 to London Excel 2025.
The clock says 5:34 slower, but the races themselves got 6:46 quicker for everyone.
The longest gap between two races compared here, 245 days between Glasgow 2025 and Dublin 2025, cost 15:44 on the field.
How this is worked out ⓘ
A finish time moves for two reasons: the athlete, and the race — its course, its floor, its day. For each pair of races in a row in one category, we take everyone who raced both and use the middle of how much they moved (the median) as "the race". Whatever is left is the athlete. Doubles are compared only when the same two people raced both, and told as the pair's; relays are left out. A pair with fewer than 15 athletes in common is not shown.
Every race
7 races · 6 events
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Glasgow11 Mar 2026Individual Pro · Men1:39:24 PB125/134Beat 7%
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London Excel4 Dec 2025Individual Open · Men1:34:372151/2779Beat 23%
↑ 22 days after Dublin 2025 0:23 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:06 faster on the clock, yet the race was 0:29 faster for everyone, so 0:23 was lost on the field.
The fieldCompare these two →0:29 faster This athlete0:06 faster -
Dublin12 Nov 2025Individual Open · Men1:34:43717/898Beat 20%
↑ 245 days after Glasgow 2025 15:44 worse than the field Why ↓Close ↑
12:33 slower on the clock in a race that was 3:11 faster for everyone: 15:44 lost to the field.
The fieldCompare these two →3:11 faster This athlete12:33 slower -
Valencia17 Oct 2025Relay · Mixed1:14:4412/28Beat 57%
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Valencia17 Oct 2025Doubles Pro · Men1:18:36 PB71/81Beat 12%
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Glasgow12 Mar 2025Individual Open · Men1:22:10 PB770/1445Beat 47%
↑ 117 days after Dublin 2024 3:47 better than the field Why ↓Close ↑
6:53 faster on the clock, and the race was 3:06 faster for everyone, so 3:47 of it was this athlete.
The fieldCompare these two →3:06 faster This athlete6:53 faster -
Dublin15 Nov 2024Individual Open · Men1:29:03804/1221Beat 34%