Progress against the field
Between Hamburg 2021 and Frankfurt 2025, Knut Welzel lost 23:10 to the field.
The clock says 3:23 faster, but the races themselves got 26:33 quicker for everyone.
The biggest step was Berlin 2024 → Hamburg 2024: 4:43 on the field in 196 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. The summary above covers Individual Open · Men, the one raced most; every comparison is in the list below.
Every race
26 races · 26 events
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Hamburg28 Oct 2026Individual Open · Men1:26:27178/381Beat 53%
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Stockholm18 Jun 2026Individual Open · Men1:25:2050/153Beat 67%
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Frankfurt12 Dec 2025Individual Open · Men1:24:02803/1883Beat 57%
↑ 42 days after Stuttgart 2025 0:27 better than the field Why ↓Close ↑
2:21 faster on the clock, and the race was 1:54 faster for everyone, so 0:27 of it was this athlete.
The fieldCompare these two →1:54 faster This athlete2:21 faster -
Stuttgart31 Oct 2025Individual Open · Men1:26:23573/1171Beat 51%
↑ 29 days after Hamburg 2025 2:21 worse than the field Why ↓Close ↑
2:21 behind the field: 1:24 slower on the clock, against 0:57 faster for everyone.
The fieldCompare these two →0:57 faster This athlete1:24 slower -
Hamburg2 Oct 2025Individual Open · Men1:24:59605/1486Beat 59%
↑ 125 days after Rimini 2025 2:20 better than the field Why ↓Close ↑
3:35 faster on the clock, and the race was 1:15 faster for everyone, so 2:20 of it was this athlete.
The fieldCompare these two →1:15 faster This athlete3:35 faster -
Rimini30 May 2025Individual Open · Men1:28:34711/1225Beat 42%
↑ 90 days after Karlsruhe 2025 7:35 worse than the field Why ↓Close ↑
4:29 slower on the clock in a race that was 3:06 faster for everyone: 7:35 lost to the field.
The fieldCompare these two →3:06 faster This athlete4:29 slower -
Karlsruhe1 Mar 2025Individual Open · Men1:24:05466/1208Beat 61%
↑ 77 days after Frankfurt 2024 1:23 worse than the field Why ↓Close ↑
1:23 behind the field: 0:13 slower on the clock, against 1:10 faster for everyone.
The fieldCompare these two →1:10 faster This athlete0:13 slower -
Frankfurt14 Dec 2024Individual Open · Men1:23:52711/1480Beat 52%
↑ 42 days after Hamburg 2024 1:42 worse than the field Why ↓Close ↑
2:00 slower on the clock in a race that was 0:18 slower for everyone: 1:42 lost to the field.
The fieldCompare these two →0:18 slower This athlete2:00 slower -
Hamburg2 Nov 2024Individual Open · Men1:21:52502/1248Beat 60%
↑ 196 days after Berlin 2024 4:43 better than the field Why ↓Close ↑
2:03 faster on the clock in a race that was 2:40 slower for everyone: 4:43 better than the field.
The fieldCompare these two →2:40 slower This athlete2:03 faster -
Berlin20 Apr 2024Individual Open · Men1:23:55613/953Beat 36%
↑ 133 days after Frankfurt 2023 10:09 worse than the field Why ↓Close ↑
1:29 slower on the clock in a race that was 8:40 faster for everyone: 10:09 lost to the field.
The fieldCompare these two →8:40 faster This athlete1:29 slower -
Frankfurt9 Dec 2023Individual Open · Men1:22:26330/843Beat 61%
↑ 21 days after Hamburg 2023 1:25 worse than the field Why ↓Close ↑
1:39 slower on the clock in a race that was 0:14 slower for everyone: 1:25 lost to the field.
The fieldCompare these two →0:14 slower This athlete1:39 slower -
Hamburg18 Nov 2023Individual Open · Men1:20:47247/737Beat 67%
↑ 196 days after Hannover 2023 0:41 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:49 faster on the clock, yet the race was 1:30 faster for everyone, so 0:41 was lost on the field.
The fieldCompare these two →1:30 faster This athlete0:49 faster -
Hannover6 May 2023Individual Open · Men1:21:36151/354Beat 57%
↑ 161 days after Hamburg 2022 3:01 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:18 faster on the clock, yet the race was 4:19 faster for everyone, so 3:01 was lost on the field.
The fieldCompare these two →4:19 faster This athlete1:18 faster -
Hamburg26 Nov 2022Individual Open · Men1:22:54209/525Beat 60%
↑ 21 days after Berlin 2022 1:34 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:26 faster on the clock looks better than it was: the race was 2:00 faster for everyone, which leaves this 1:34 behind the field.
The fieldCompare these two →2:00 faster This athlete0:26 faster -
Berlin5 Nov 2022Individual Open · Men1:23:2075/199Beat 62%
↑ 231 days after Bremen 2022 0:16 worse than the field Why ↓Close ↑
1:01 slower on the clock in a race that was 0:45 slower for everyone: 0:16 lost to the field.
The fieldCompare these two →0:45 slower This athlete1:01 slower -
Las Vegas14 May 2022Individual Pro · Men1:54:03 PB256/263Beat 3%
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Bremen19 Mar 2022Individual Open · Men1:22:19100/240Beat 58%
↑ 112 days after Hamburg 2021 0:33 worse than the field Faster on the clock, behind the field Why ↓Close ↑
5:06 faster on the clock, yet the race was 5:39 faster for everyone, so 0:33 was lost on the field.
The fieldCompare these two →5:39 faster This athlete5:06 faster -
Hamburg27 Nov 2021Individual Open · Men1:27:25113/304Beat 63%
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Berlin20 Nov 2021Individual Open · Men1:26:1167/130Beat 49%
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Hannover25 Jan 2020Individual Open · Men1:25:4993/325Beat 71%
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Frankfurt7 Dec 2019Individual Open · Men1:26:1264/198Beat 68%
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Hamburg23 Nov 2019Individual Open · Men1:25:30103/463Beat 78%
↑ 301 days after Hannover 2019 1:33 better than the field Why ↓Close ↑
The race was 1:04 slower for everyone and the clock still says 0:29 faster: 1:33 gained on the field.
The fieldCompare these two →1:04 slower This athlete0:29 faster -
Hannover26 Jan 2019Individual Open · Men1:25:5987/260Beat 67%
↑ 84 days after Hamburg 2018 1:13 worse than the field Faster on the clock, behind the field Why ↓Close ↑
2:34 faster on the clock looks better than it was: the race was 3:47 faster for everyone, which leaves this 1:13 behind the field.
The fieldCompare these two →3:47 faster This athlete2:34 faster -
Hamburg3 Nov 2018Individual Open · Men1:28:33140/444Beat 69%
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World Championships NiceDate unknownIndividual Open · Men1:22:5912/50Beat 76%
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World Championships ManchesterDate unknownIndividual Open · Men1:20:11 PB5/23Beat 78%