Sonja IDZERDA
Netherlands
50-54 Women
Evolution
2026
September 5
Jungfrau-Marathon
33. Jungfrau-Marathon
Cat.
country
Distance
42.2 KM
1953 M+
Time
05:05:40
Rank
920
3605
Gender
138
898
2025
July 12
PIUT30
PIUT
Cat.
country
Distance
30 KM
2570 M+
Time
04:31:17
Rank
94
211
Gender
22
75
2024
Cat.
country
Distance
33 KM
2200 M+
Time
05:43:38
Rank
100
193
Gender
29
65
2019
August 10
KAT100 Marathon Trail
KAT100
Cat.
country
Distance
62 KM
3520 M+
Time
09:30:35
Rank
39
86
Gender
5
17
March 9
50 Kilometer
SallandTrail
Cat.
country
Distance
48.5 KM
466 M+
Time
04:48:53
Rank
37
216
Gender
3
42
2018
Cat.
country
Distance
44 KM
2140 M+
Time
06:59:01
Rank
20
66
Gender
3
22
2017
Cat.
country
Distance
30.6 KM
940 M+
Time
04:50:17
Rank
82
239
Gender
20
90
Cat.
country
Distance
29 KM
1270 M+
Time
04:01:58
Rank
294
866
Gender
24
169
2016
August 6
PITZ 26
Pitz Alpine Glacier Trail
Cat.
country
Distance
26.8 KM
1530 M+
Time
04:27:37
Rank
60
147
Gender
10
45
