Progress against the field
From Maastricht 2025 to Heerenveen 2026, Joska Koch and Iris Reijnen have moved with the field: what changed on the clock changed for everyone.
The clock says 3:48 faster, but the races themselves got 3:48 quicker for everyone.
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 Doubles Open · Women, with Iris Reijnen, the one raced most; every comparison is in the list below.
Every race
15 races · 12 events
-
Heerenveen14 May 2026Doubles Open · Women1:08:19 PB26/737Beat 97%
↑ 237 days after Maastricht 2025, with Iris Reijnen 0:00 better than the field Why ↓Close ↑
Moved with the field: 3:48 faster on the clock, against 3:48 faster for everyone.
The fieldCompare these two →3:48 faster This pair3:48 faster -
Malaga16 Apr 2026Individual Pro · Women1:21:19 PB79/146Beat 46%
-
Amsterdam21 Jan 2026Doubles Pro · Women1:19:17110/183Beat 40%
-
Utrecht28 Nov 2025Relay · Women1:09:509/35Beat 74%
-
Utrecht28 Nov 2025Individual Open · Women1:14:53 PB28/619Beat 96%
-
Maastricht19 Sep 2025Doubles Open · Women1:12:0717/329Beat 95%
-
Maastricht19 Sep 2025Doubles Pro · Women1:21:0030/92Beat 67%
-
Heerenveen9 May 2025Doubles Open · Mixed1:05:24 PB11/250Beat 96%
↑ 71 days after Rotterdam 2025, with Dirk Driessen 0:27 better than the field Why ↓Close ↑
0:27 better than the field: 3:34 faster on the clock, against 3:07 faster for everyone.
The fieldCompare these two →3:07 faster This pair3:34 faster -
Heerenveen9 May 2025Individual Open · WomenDNF—
-
Cologne10 Apr 2025Relay · Women1:05:562/34Beat 94%
-
Belgium5 Apr 2025Doubles Open · Women1:13:5264/713Beat 91%
-
Rotterdam27 Feb 2025Doubles Open · Mixed1:08:5830/353Beat 92%
-
Frankfurt14 Dec 2024Doubles Pro · Women1:16:19 PB32/80Beat 60%
-
Amsterdam10 Oct 2024Individual Pro · Women1:34:4846/66Beat 30%
-
Maastricht20 Jan 2024Doubles Open · Women1:19:4678/219Beat 64%