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Marathon Deutsche Weinstraße 2026   HaWei50 50km Ultralauf 28.2.2026   3h, 6h, 12h, 24h of Santander  
Name: Kalfsbeek, Jennifer   Submit Personal Website Send Link 
Club:  
Residence: Woodland, CA
Year of birth: 1956 (Cat. german: W70)
Date of birth: 00.00.0000 (Cat. internat.: W65)
Nationality: USA USA United States
RunnerID: 156725
 

21 search results (21 Events, 1166.223 km).  (More)

2000 2 Events, 130.467 km  (More)
01.04.2000 American River 50 Mile Endurance Run (USA) 50mi
10:09:24 h Kalfsbeek, Jennifer   Overall: 194 F: 46 Cat W40: 12
11.03.2000 Way Too Cool 50K Endurance Run (USA) 50km
5:57:09 h Kalfsbeek, Jennifer   Overall: 209 F: 46 Cat W40: 10
1999 6 Events, 329.067 km  (More)
05.09.1999 Run On The Sly 50 Km (USA) 50km
6:25:17 h Kalfsbeek, Jennifer   Overall: 35 F: 8 Cat W40: 3
24.07.1999 Siskiyou Out Back 50 km Trail Run (USA) 48.6km
5:51:02 h Kalfsbeek, Jennifer *Woodland, CA  Overall: 15 F: 1 Cat W40: 1
15.05.1999 Silver State 50 km (USA) 50km
8:31:47 h Kalfsbeek, Jennifer   Overall: 38 F: 7 Cat W40: 1
08.05.1999 Quicksilver 50 km Endurance Run (USA) 50km
5:55:37 h Kalfsbeek, Jennifer   Overall: 48 F: 13 Cat W40: 2
10.04.1999 American River 50 Mile Endurance Run (USA) 50mi
9:19:39 h Kalfsbeek, Jennifer   Overall: 212 F: 39 Cat W40: 10
13.02.1999 Jed Smith Ultra Classic - 50 Km Race (USA) 50km
4:59:52 h Kalfsbeek, Jennifer   Overall: 66 F: 12 Cat W40: 2
1998 8 Events, 456.689 km  (More)
28.11.1998 Quad Dipsea Trail Run (USA) 28mi
6:43:29 h Kalfsbeek, Jennifer   Overall: 130 F: 24 Cat W40: 6
10.10.1998 Dick Collins Firetrails 50 Mile (USA) 50mi
10:17:23 h Kalfsbeek, Jennifer   Overall: 48 F: 9 Cat W40: 3
06.09.1998 Run On The Sly 50 Km (USA) 50km
6:19:37 h Kalfsbeek, Jennifer   Overall: 24 F: 7 Cat W40: 1
29.08.1998 Tamalpa Headlands 50K (USA) 31.5mi
6:12:37 h Kalfsbeek, Jennifer *Woodland  Overall: 52 F: 7 Cat W40: 2
01.08.1998 Skyline 50k Endurance Run (USA) 50km
5:48:36 h Kalfsbeek, Jennifer   Overall: 78 F: 15 Cat W40: 3
06.06.1998 Shadow of the Giants 50K (USA) 50km
6:24:35 h Kalfsbeek, Jennifer   Overall: 46 F: 11 Cat W40: 4
04.04.1998 American River 50 Mile Endurance Run (USA) 50mi
9:38:27 h Kalfsbeek, Jennifer   Overall: 248 F: 46 Cat W40: 11
14.03.1998 Way Too Cool 50K Endurance Run (USA) 50km
5:48:21 h Kalfsbeek, Jennifer   Overall: 160 F: 30 Cat W40: 8
1997 5 Events, 250 km  (More)
13.12.1997 Sunmart Texas Trails 50 Km (USA) 50km
5:17:19 h Kalfsbeek, Jennifer *Woodland, CA  Overall: 151 F: 33 Cat W40: 7
15.11.1997 Helen Klein Ultra Classic 50km (USA) 50km
4:37:38 h Kalfsbeek, Jennifer   Overall: 12 F: 4 Cat W40: 2
06.09.1997 Point Reyes 50K (USA) 50km
6:03:00 h Kalfsbeek, Jennifer   Overall: 72 F: 12 Cat W40: 3
10.05.1997 Quicksilver 50 km Endurance Run (USA) 50km
5:48:08 h Kalfsbeek, Jennifer   Overall: 52 F: 6 Cat W40: 1
15.03.1997 Way Too Cool 50K Endurance Run (USA) 50km
5:20:10 h Kalfsbeek, Jennifer   Overall: 127 F: 22 Cat W40: 4

Personal bests

Your list of personal best performances only contains performances of races which can be included into rankings.

In brackets rank in yearly international/national rankings.

 PB 2000 1999 1998 1997
50km 4:37:38  
4:59:52
  		 
4:37:38
 

Comparison table

Comparison of performances in races with multiple participations

   2000 1999 1998 1997
Way Too Cool 50K Endurance Run 3 5:57:09   5:48:21 5:20:10
American River 50 Mile Endurance Run 3 10:09:24 9:19:39 9:38:27  
Run On The Sly 50 Km 2   6:25:17 6:19:37  
Quicksilver 50 km Endurance Run 2   5:55:37   5:48:08