Margaret Jo Retsema (F52)
2026
2 Races | 93 mi.Dirty Burg
Jul 11th 2026
| Belmont, MI
Distance
50 KM
Overall
7
/ 23
Division (F)
2
/ 6
6:23:30
Badlands Race Series
May 16th 2026
| Brighton, MI
Distance
100 KM
Overall
6
/ 21
Division (F)
1
/ 5
12:01:00
2024
1 Race | 50 mi.The Hungerford Trail Races
Sep 28th 2024
| Big Rapids, MI
Distance
50 Miles
Overall
4
/ 35
Division (F)
2
/ 16
9:03:31
2023
1 Race | 62 mi.Yankee Springs Trail Run
Jun 3rd 2023
| Middleville, MI
Distance
100 KM
Overall
5
/ 12
Division (F)
2
/ 3
11:51:17
2019
4 Races | 237 mi.Tunnel Hill 100
Nov 9th 2019
| Vienna, IL
Distance
100 Miles
Overall
160
/ 225
Division (F)
47
/ 73
26:38:15
The Ultra Bird 12hr and 6hr Trail Races
Nov 2nd 2019
| West Olive, MI
Duration
12 Hours
Overall
15
/ 28
Division (F)
6
/ 10
43.4
Yankee Springs Fall Trail Run Festival
Oct 5th 2019
| Middleville, MI
Distance
50 KM
Overall
23
/ 24
Division (F)
9
/ 9
7:22:35
Run Woodstock
Sep 6th 2019
| Gregory, MI
Distance
100 KM
Overall
30
/ 49
Division (F)
10
/ 21
19:26:02
8
Races
6y 10m 10d
Longevity
442
Lifetime Miles
Personal Bests
50k
(2)
6:23:30
2026
50m
(1)
9:03:31
2024
100k
(3)
11:51:17
2023
100m
(1)
26:38:15
2019
12hr
(1)
43.4
2019
Distance by Year
2026
93
Miles
2 Races
2024
50
Miles
1 Race
2023
62
Miles
1 Race
2019
237
Miles
4 Races
Multiple Performances
2nd Place
9:03:31
50 Miles
Masters Winner
9:03:31
50 Miles
Achievements are awarded for races with 25 or more finishers and courses with 200 or more finishers.
Masters: 40-49 / Grand Masters: 50-59 / Senior Grand Masters: 60+