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Marathon Deutsche Weinstraße 2026   HaWei50 50km Ultralauf 28.2.2026   3h, 6h, 12h, 24h of Santander  
Name: Koester, Silke   Submit Personal Website Send Link 
Club: Rocky Mountain Runners 
Residence: Houston, TX
Year of birth: 1982 (Cat. german: W40)
Date of birth: 00.00.0000 (Cat. internat.: W40)
Nationality: USA USA United States
RunnerID: 63753
 

51 search results (50 Events, 4656.378 km).  (More)

2025 3 Events, 291.401 km  (More)
06.09.2025 Devil on the Divide Ultra (USA) 50km
6:12:05 h Koester, Silke *Boulder, CO  Overall: 30 F: 7 Cat W40: 2
18.-19.07.2025 High Lonesome 100 Mile (USA) 100mi
26:26:51 h Koester, Silke *Boulder, CO  Overall: 19 F: 6 Cat W40: 1
10.05.2025 Quad Rock 50 Mile (USA) 50mi
10:32:01 h Koester, Silke *Boulder, CO  Overall: 23 F: 4 Cat W40: 1
2024 1 Event, 160.934 km  (More)
19.-20.07.2024 High Lonesome 100 Mile (USA) 100mi
27:36:19 h Koester, Silke *Boulder, CO  Overall: 20 F: 7 Cat W40: 1
2023 2 Events, 260.934 km  (More)
21.-22.07.2023 High Lonesome 100 Mile (USA) 100mi
27:48:15 h Koester, Silke *Boulder, CO  Overall: 11 F: 4 Cat W40: 1
06.05.2023 Miwok 100k Trail Race (USA) 100km
12:00:00 h Koester, Silke   Overall: 53 F: 12 Cat W40: 3
2022 2 Events, 321.868 km  (More)
26.-27.08.2022 Divide 100 Mile Race (USA) 100mi
38:30:01 h Koester, Silke *Boulder, CO  Overall: 4 F: 1 Cat W35: 1
22.-23.07.2022 High Lonesome 100 Mile (USA) 100mi
27:13:58 h Koester, Silke *Boulder, CO  Overall: 11 F: 6 Cat W35: 2
2021 2 Events, 241.401 km  (More)
30.-31.07.2021 High Lonesome 100 Mile (USA) 100mi
26:41:22 h Koester, Silke   Overall: 9 F: 3 Cat W35: 2
26.06.2021 San Juan Solstice 50 Mile Run (USA) 50mi
11:20:06 h Koester, Silke *Boulder, CO  Overall: 44 F: 12 Cat W35: 3
2019 1 Event, 160.934 km  (More)
26.-27.07.2019 High Lonesome 100 Mile (USA) 100mi
25:28:20 h Koester, Silke *Boulder, CO  Overall: 6 F: 1 Cat W35: 1
2018 1 Event, 100 km  (More)
28.-29.07.2018 Never Summer 100k (USA) 100km
17:20:51 h Koester, Silke *Boulder, CO  Overall: 64 F: 8 Cat W35: 2
2016 5 Events, 561.401 km  (More)
26.-28.08.2016 Ultra Trail Tour du Mont Blanc (UTMB) (FRA) 170km
33:00:21 h Koester, Silke Rocky Mountain Runners  Overall: 147 F: 14 Cat W23: 3
17.-18.06.2016 Bighorn Mountain Wild & Scenic 100 Mile Trail Run (USA) 100mi
23:10:54 h Koester, Silke *Boulder, CO  Overall: 17 F: 3 Cat W23: 1
04.06.2016 Golden Gate Dirty 30 (USA) 50km
6:29:40 h Koester, Silke *Boulder, CO  Overall: 61 F: 8 Cat W23: 7
30.04.2016 Endurance Challenge - New York Trail 50 Miles (USA) 50mi
8:53:26 h Koester, Silke *Boulder, CO  Overall: 33 F: 2 Cat W23: 1
02.04.2016 Gorge Waterfalls 100k (USA) 100km
11:52:33 h Koester, Silke *Boulder, CO  Overall: 32 F: 8 Cat W23: 7
2015 5 Events, 471.868 km  (More)
01.08.2015 Pikes Peak Ultra (USA) 50mi
10:16:19 h Koester, Silke *Boulder, CO  Overall: 6 F: 1 Cat W23: 1
19.-20.06.2015 Bighorn Mountain Wild & Scenic 100 Mile Trail Run (USA) 100mi
24:13:30 h Koester, Silke *Boulder, CO  Overall: 19 F: 1 Cat W23: 1
30.05.2015 Golden Gate Dirty 30 (USA) 50km
5:54:03 h Koester, Silke *Boulder, CO  Overall: 42 F: 3 Cat W23: 1
28.03.2015 Behind the Rocks 50 Mile Race (USA) 50mi
9:22:00 h Koester, Silke *Boulder, CO  Overall: 6 F: 1 Cat W23: 1
07.02.2015 Sean O'Brien 100 km Trail Race (USA) 100km
11:11:58 h Koester, Silke *Boulder, CO  Overall: 19 F: 3 Cat W23: 1
2014 6 Events, 734.401 km  (More)
30.08.-06.09.2014 Goretex TransAlpine-Run (GER) 293km/8stages
36:45:26 h Koester, Silke Team Rocky Mountain Runners  Overall: 105 F: 11 Cat W30: 3
28.-29.06.2014 Western States 100 Mile Endurance Run (USA) 100mi
23:06:02 h Koester, Silke *Boulder, CO  Overall: 93 F: 17 Cat W23: 11
31.05.2014 Golden Gate Dirty 30 (USA) 50km
6:29:32 h Koester, Silke *Boulder, CO  Overall: 36 F: 4 Cat W23: 2
10.05.2014 Quad Rock 50 Mile (USA) 50mi
9:59:09 h Koester, Silke *Boulder, CO  Overall: 29 F: 4 Cat W23: 2
26.04.2014 Zane Grey Highline Trail 50 km (USA) 50km
6:55:43 h Koester, Silke *CO  Overall: 25 F: 2 Cat W23: 1
11.01.2014 Bandera 100 km Ultratrail - US Trail Championships (USA) 100km
11:01:44 h Koester, Silke *Boulder, CO  Overall: 14 F: 4 Cat W23: 2
11.01.2014 Bandera 100 km Ultratrail - Open race (USA) 100km
11:01:44 h Koester, Silke *Boulder, CO  Overall: 17 F: 4 Cat W23: 2
2013 6 Events, 365.934 km  (More)
02.11.2013 Mountain Masochist 50 Mile Trail Run (USA) 50mi
9:14:38 h Koester, Silke *CO  Overall: 44 F: 5 Cat W23: 3
04.08.2013 Power of Four Trail Run (USA) 50km
5:52:56 h Koester, Silke   Overall: 9 F: 1 Cat W23: 1
27.07.2013 Speedgoat 50k (USA) 50km
6:52:16 h Koester, Silke *Boulder, CO  Overall: 46 F: 7 Cat W23: 3
22.06.2013 San Juan Solstice 50 Mile Run (USA) 50mi
10:36:26 h Koester, Silke   Overall: 17 F: 2 Cat W23: 1
01.06.2013 Golden Gate Dirty 30 (USA) 50km
5:38:19 h Koester, Silke *Boulder, CO  Overall: 28 F: 4 Cat W23: 2
16.02.2013 Moab Red Hot 55k (USA) 55km
5:29:06 h Koester, Silke *Boulder, CO  Overall: 60 F: 8 Cat W23: 4
2012 4 Events, 230.467 km  (More)
15.-16.09.2012 Run Rabbit Run 50 Mile UltraMarathon (USA) 50mi
9:09:28 h Koester, Silke *Boulder, CO  Overall: 10 F: 3 Cat W23: 1
28.07.2012 Speedgoat 50k (USA) 50km
7:31:59 h Koester, Silke *Boulder, CO  Overall: 52 F: 6 Cat W23: 2
30.06.2012 North Fork 50 km Trail Race (USA) 50km
5:10:41 h Koester, Silke *Boulder, CO  Overall: 8 F: 3 Cat W23: 2
02.06.2012 Golden Gate Dirty 30 (USA) 50km
6:08:34 h Koester, Silke   Overall: 38 F: 4 Cat W23: 2
2011 1 Event, 50 km  (More)
06.08.2011 HURL Elkhorn 50 km Endurance Run (USA) 50km
5:53:21 h Koester, Silke *Houston, TX  Overall: 8 F: 2 Cat W23: 2
2010 6 Events, 421.868 km  (More)
04.12.2010 Endurance Challenge - California Trail 50 Mile (USA) 50mi
10:24:47 h Koester, Silke *New York, NY  Overall: 83 F: 19 Cat W23: 11
06.11.2010 Mountain Masochist 50 Mile Trail Run (USA) 50mi
9:21:20 h Koester, Silke *New York, NY  Overall: 34 F: 6 Cat W23: 4
26.09.2010 Vermont 50 km Ultra Run (USA) 50km
5:20:16 h Koester, Silke *New York, NY  Overall: 26 F: 8 Cat W23: 4
05.06.2010 Endurance Challenge - Washington D.C. Trail 50 Miles (USA) 50mi
9:25:10 h Koester, Silke *New York, NY  Overall: 35 F: 7 Cat W23: 5
08.05.2010 Endurance Challenge - New York Trail 50 Miles (USA) 50mi
11:21:52 h Koester, Silke *New York, NY  Overall: 50 F: 7 Cat W23: 4
06.03.2010 Seneca Creek Greenway Trail 50k (USA) 50km
5:14:14 h Koester, Silke *New York, NY  Overall: 26 F: 2 Cat W23: 1
2009 3 Events, 182.967 km  (More)
07.11.2009 Mountain Masochist 50 Mile Trail Run (USA) 50mi
9:51:51 h Koester, Silke *NY  Overall: 66 F: 11 Cat W23: 6
25.07.2009 Damn Wakely Dam Ultra (USA) 52.5km
7:10:33 h Koester, Silke *New York, NY  Overall: 17 F: 3 Cat W23: 1
09.05.2009 Endurance Challenge - New York Trail 50km (USA) 50km
6:22:26 h Koester, Silke *New York, NY  Overall: 32 F: 3 Cat W23: 3
2008 2 Events, 100 km  (More)
06.12.2008 Endurance Challenge - California Trail 50 km (USA) 50km
6:44:36 h Koester, Silke   Overall: 36 F: 12 Cat W23: 8
10.05.2008 Endurance Challenge - Washington Trail 50 km (USA) 50km
7:16:22 h Koester, Silke   Overall: 22 F: 5 Cat W23: 5

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 2025 2024 2023 2022 2021 2019 2018 2016 2015 2014 2013 2012 2011 2010 2009 2008

Comparison table

Comparison of performances in races with multiple participations

   2025 2024 2023 2022 2021 2019 2018 2016 2015 2014 2013 2012 2011 2010 2009 2008
High Lonesome 100 Mile 6 26:26:51 27:36:19 27:48:15 27:13:58 26:41:22 25:28:20                    
Golden Gate Dirty 30 5               6:29:40 5:54:03 6:29:32 5:38:19 6:08:34        
Mountain Masochist 50 Mile Trail Run 3                     9:14:38     9:21:20 9:51:51  
Quad Rock 50 Mile 2 10:32:01                 9:59:09            
Speedgoat 50k 2                     6:52:16 7:31:59        
San Juan Solstice 50 Mile Run 2         11:20:06           10:36:26          
Endurance Challenge - New York Trail 50 Miles 2               8:53:26           11:21:52    
Bighorn Mountain Wild & Scenic 100 Mile Trail Run 2               23:10:54 24:13:30