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Marathon Deutsche Weinstraße 2026   HaWei50 50km Ultralauf 28.2.2026   3h, 6h, 12h, 24h of Santander  
Name: O'Brien, Michael   Submit Personal Website Send Link 
Club:  
Residence: Denver, CO
Year of birth: 1983 (Cat. german: M40)
Date of birth: 00.00.0000 (Cat. internat.: M40)
Nationality: USA USA United States
RunnerID: 571252
 

15 search results (15 Events, 1609.693 km).  (More)

2025 2 Events, 313.934 km  (More)
25.-27.08.2025 Sur les Traces des Ducs de Savoie (TDS) (ITA) 153km
31:22:52 h O'Brien, Michael   Overall: 268 M: 249 Cat M40: 38
18.-19.07.2025 High Lonesome 100 Mile (USA) 100mi
25:52:52 h O'Brien, Michael *Silverthorne, CO  Overall: 17 M: 12 Cat M40: 3
2024 3 Events, 180.155 km  (More)
28.09.2024 Ultra Trail Whistler by UTMB - 70K (CAN) 69km
8:30:47 h O'Brien, Michael   Overall: 5 M: 5 Cat M40: 1
24.08.2024 Telluride Mountain Run (USA) 38mi
8:43:26 h O'Brien, Michael *Silverthorne, CO  Overall: 5 M: 5 Cat M40: 1
10.02.2024 The Delmarva Ultra Challenge - Split Algonquin 50km (USA) 50km
7:22:11 h O'Brien, Michael *Hallwood, VA  Overall: 166 M: 100 Cat M40: 16
2022 2 Events, 210.934 km  (More)
25.-26.11.2022 Ultra-Trail Cape Town (UTCT) 100 mi (RSA) 100mi
32:28:25 h O'Brien, Michael   Overall: 31 M: 27 Cat M35: 8
10.09.2022 Devil on the Divide Ultra (USA) 50km
5:01:28 h O'Brien, Michael *Silverthorne, CO  Overall: 3 M: 3 Cat M35: 2
2021 2 Events, 210.934 km  (More)
20.-21.08.2021 Wyoming Range 100 Mile Endurance Run (USA) 100mi
32:35:28 h O'Brien, Michael *Silverthorne, CO  Overall: 1 M: 1 Cat M35: 1
24.07.2021 Grand Island 50 km Race (USA) 50km
4:15:24 h O'Brien, Michael *Denver, CO  Overall: 3 M: 3 Cat M35: 1
2019 1 Event, 50 km  (More)
07.09.2019 Devil on the Divide Ultra (USA) 50km
5:24:03 h O'Brien, Michael *Breckenridge, CO  Overall: 6 M: 6 Cat M35: 1
2018 2 Events, 241.401 km  (More)
18.-19.08.2018 Leadville Trail 100 Mile (USA) 100mi
23:14:22 h O'Brien, Michael *Breckenridge, CO  Overall: 48 M: 45 Cat M23: 16
08.07.2018 Leadville Silver Rush 50 Mile Run (USA) 50mi
8:46:22 h O'Brien, Michael   Overall: 26 M: 22 Cat M23: 12
2016 1 Event, 160.934 km  (More)
16.-17.09.2016 Run Rabbit Run 100 Mile UltraMarathon - Tortoises Run (USA) 100mi
27:10:13 h O'Brien, Michael *Denver, CO  Overall: 18 M: 17 Cat M23: 5
2015 1 Event, 80.467 km  (More)
12.07.2015 Leadville Silver Rush 50 Mile Run (USA) 50mi
8:33:14 h O'Brien, Michael *Denver, CO  Overall: 22 M: 19 Cat M23: 14
2014 1 Event, 160.934 km  (More)
16.-17.08.2014 Leadville Trail 100 Mile (USA) 100mi
24:13:17 h O'Brien, Michael *Denver, CO  Overall: 59 M: 56 Cat M23: 20

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 2022 2021 2019 2018 2016 2015 2014

Comparison table

Comparison of performances in races with multiple participations

   2025 2024 2022 2021 2019 2018 2016 2015 2014
Devil on the Divide Ultra 2     5:01:28   5:24:03        
Leadville Silver Rush 50 Mile Run 2           8:46:22   8:33:14  
Leadville Trail 100 Mile 2           23:14:22     24:13:17