Progress against the field
Between Mechelen 2026 and Hamburg 2026, Jop Janssen lost 1:13 to the field.
The races barely moved for everyone else, so 1:06 slower on the clock is close to the whole story.
The biggest step was Stockholm 2026 → Maastricht 2026: 15:53 on the field in 93 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 Pro · Men, the one raced most; every comparison is in the list below.
Every race
20 races · 16 events
-
Hamburg28 Oct 2026Doubles Pro · Men52:26 PB8/475Beat 98%
-
Hamburg28 Oct 2026Individual Pro · Men59:1313/653Beat 98%
↑ 39 days after Maastricht 2026 2:51 worse than the field Why ↓Close ↑
2:51 behind the field: 0:38 slower on the clock, against 2:13 faster for everyone.
The fieldCompare these two →2:13 faster This athlete0:38 slower -
Maastricht19 Sep 2026Doubles Pro · Men52:546/316Beat 98%
↑ 93 days after Stockholm 2026, with Jordi Fuhler 0:27 better than the field Why ↓Close ↑
1:53 faster on the clock, and the race was 1:26 faster for everyone, so 0:27 of it was this pair.
The fieldCompare these two →1:26 faster This pair1:53 faster -
Maastricht19 Sep 2026Individual Pro · Men58:3510/399Beat 98%
↑ 93 days after Stockholm 2026 15:53 better than the field Why ↓Close ↑
16:28 faster on the clock, and the race was 0:35 faster for everyone, so 15:53 of it was this athlete.
The fieldCompare these two →0:35 faster This athlete16:28 faster -
Stockholm18 Jun 2026Doubles Pro · Men54:4782/704Beat 88%
↑ 64 days after Rotterdam 2026, with Jordi Fuhler 0:30 better than the field Slower on the clock, ahead of the field Why ↓Close ↑
1:27 slower on the clock, but the race was 1:57 slower for everyone, so this was 0:30 better than the field.
The fieldCompare these two →1:57 slower This pair1:27 slower -
Stockholm18 Jun 2026Individual Pro · Men1:15:03569/767Beat 26%
↑ 64 days after Rotterdam 2026 13:51 worse than the field Why ↓Close ↑
15:09 slower on the clock in a race that was 1:18 slower for everyone: 13:51 lost to the field.
The fieldCompare these two →1:18 slower This athlete15:09 slower -
Rotterdam15 Apr 2026Doubles Pro · Men53:204/385Beat 99%
-
Rotterdam15 Apr 2026Individual Pro · Men59:547/348Beat 98%
↑ 20 days after Mechelen 2026 0:24 worse than the field Why ↓Close ↑
0:24 behind the field: 1:47 slower on the clock, against 1:23 slower for everyone.
The fieldCompare these two →1:23 slower This athlete1:47 slower -
Mechelen26 Mar 2026Individual Pro · Men58:07 PB16/457Beat 97%
-
Stockholm18 Dec 2025Individual Pro · Men59:4012/247Beat 95%
-
Gent12 Dec 2025Individual Pro · Men1:01:3614/305Beat 95%
↑ 14 days after Utrecht 2025 0:58 worse than the field Faster on the clock, behind the field Why ↓Close ↑
2:07 faster on the clock, yet the race was 3:05 faster for everyone, so 0:58 was lost on the field.
The fieldCompare these two →3:05 faster This athlete2:07 faster -
Utrecht28 Nov 2025Individual Pro · Men1:03:434/102Beat 96%
-
Maastricht19 Sep 2025Individual Pro · MenDNF—
-
Heerenveen9 May 2025Individual Open · Men58:44 PB4/1217Beat 100%
-
Frankfurt14 Dec 2024Individual Pro · Men1:02:1224/280Beat 91%
↑ 65 days after Amsterdam 2024 5:00 better than the field Why ↓Close ↑
The race was 1:17 slower for everyone and the clock still says 3:43 faster: 5:00 gained on the field.
The fieldCompare these two →1:17 slower This athlete3:43 faster -
Amsterdam10 Oct 2024Individual Pro · Men1:05:559/177Beat 95%
-
Rotterdam6 Apr 2024Doubles Pro · Men59:197/101Beat 93%
-
Amsterdam4 Nov 2023Doubles Open · Men1:00:49 PB12/411Beat 97%
↑ 168 days after Rotterdam 2023, with Wouter Brouwer 0:12 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:14 faster on the clock looks better than it was: the race was 1:26 faster for everyone, which leaves this 0:12 behind the field.
The fieldCompare these two →1:26 faster This pair1:14 faster -
Rotterdam20 May 2023Doubles Open · Men1:02:0317/249Beat 93%
-
World Championships NiceDate unknownDoubles Pro · Men59:36115/387Beat 70%