Progress against the field
Bertie Van Zyl has gained 0:31 on the field from Rotterdam 2025 to Amsterdam 2026.
Over the same races everyone got 9:30 quicker, so 10:01 faster on the clock looks better than it was.
The largest gain on the field came from Rotterdam 2025 → Heerenveen 2025: 3:31 in 71 days.
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
6 races · 6 events
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Maastricht19 Sep 2026Doubles Open · Men1:02:08 PB74/816Beat 91%
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Amsterdam21 Jan 2026Individual Open · Men1:15:26 PB380/1620Beat 77%
↑ 54 days after Utrecht 2025 4:11 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:56 faster on the clock looks better than it was: the race was 5:07 faster for everyone, which leaves this 4:11 behind the field.
The fieldCompare these two →5:07 faster This athlete0:56 faster -
Utrecht28 Nov 2025Individual Open · Men1:16:22220/1337Beat 84%
↑ 70 days after Maastricht 2025 3:01 better than the field Why ↓Close ↑
3:01 better than the field: 6:37 faster on the clock, against 3:36 faster for everyone.
The fieldCompare these two →3:36 faster This athlete6:37 faster -
Maastricht19 Sep 2025Individual Open · Men1:22:59429/1352Beat 68%
↑ 133 days after Heerenveen 2025 1:50 worse than the field Why ↓Close ↑
3:32 slower on the clock in a race that was 1:42 slower for everyone: 1:50 lost to the field.
The fieldCompare these two →1:42 slower This athlete3:32 slower -
Heerenveen9 May 2025Individual Open · Men1:19:27388/1217Beat 68%
↑ 71 days after Rotterdam 2025 3:31 better than the field Why ↓Close ↑
3:31 better than the field: 6:00 faster on the clock, against 2:29 faster for everyone.
The fieldCompare these two →2:29 faster This athlete6:00 faster -
Rotterdam27 Feb 2025Individual Open · Men1:25:27603/1283Beat 53%