Seth Swanson (M47)

2026

1 Race | 28 mi.

Running Up for Air (MT) - Mt. Sentinel

Feb 7th 2026
| Missoula, MT
Duration
6 Hours
Overall
1 / 1
Division (M)
1 / 1
28

2025

1 Race | 31 mi.

Rut Mountain Runs

Sep 14th 2025
| Big Sky, MT
Distance
50 KM
Overall
13 / 523
Division (M)
12 / 357
6:31:30

2024

2 Races | 150 mi.

Crazy Mountain 100

Jul 26th 2024
| Lennep, MT
Distance
100 Miles
Overall
1 / 145
Division (M)
1 / 120
22:08:45

Scout Mountain Ultra Trail

Jun 8th 2024
| Pocatello, ID
Distance
50 Miles
Overall
2 / 47
Division (M)
2 / 27
9:35:56

2023

1 Race | 100 mi.

Bighorn

Jun 17th 2023
| Dayton, WY
Distance
100 Miles
Overall
3 / 191
Division (M)
3 / 158
20:21:23

2022

1 Race | 67 mi.

River of No Return Endurance Runs

Jun 18th 2022
| Challis, ID
Distance
108 KM
Overall
1 / 32
Division (M)
1 / 26
12:44:39

2021

1 Race | 34 mi.

Beaverhead Endurance Runs

Jul 10th 2021
| Salmon, ID
Distance
55 KM
Overall
1 / 165
Division (M)
1 / 91
5:36:14

2019

2 Races | 131 mi.

Rut Mountain Runs

Sep 1st 2019
| Big Sky, MT
Distance
50 KM
Overall
4 / 414
Division (M)
4 / 302
5:52:44

Bighorn

Jun 14th 2019
| Dayton, WY
Distance
100 Miles
Overall
1 / 187
Division (M)
1 / 154
19:30:05

2018

2 Races | 131 mi.

Run Rabbit Run

Sep 14th 2018
| Steamboat Springs, CO
Distance
100 Miles
Overall
6 / 206
Division (M)
6 / 170
20:42:03

Woodside Crossover

Apr 7th 2018
| Woodside, CA
Distance
50 KM
Overall
1 / 79
Division (M)
1 / 50
3:46:07

2017

1 Race | 31 mi.

Rut Mountain Runs

Sep 3rd 2017
| Big Sky, MT
Distance
50 KM
Overall
7 / 379
Division (M)
7 / 273
5:56:55

2016

1 Race | 31 mi.
Distance
50 KM
Overall
4 / 515
Division (M)
4 / 297
4:16:57

2015

3 Races | 212 mi.

Western States 100

Jun 27th 2015
| Olympic Valley, CA
Distance
100 Miles
Overall
2 / 254
Division (M)
2 / 201
15:17:28

Lake Sonoma 100K & 50K

Apr 11th 2015
| Healdsburg, CA
Distance
50 Miles
Overall
6 / 278
Division (M)
6 / 209
6:46:01

Sean O'Brien 100k/50M/50k

Feb 7th 2015
| Malibu, CA
Distance
100 KM
Overall
2 / 93
Division (M)
2 / 69
8:57:06

2014

3 Races | 250 mi.

Cascade Crest

Aug 23rd 2014
| Easton, WA
Distance
100 Miles
Overall
1 / 105
Division (M)
1 / 83
17:56:50

Western States 100

Jun 28th 2014
| Olympic Valley, CA
Distance
100 Miles
Overall
2 / 296
Division (M)
2 / 241
15:19:39

Capitol Peak

Apr 26th 2014
| Olympia, WA
Distance
50 Miles
Overall
1 / 76
Division (M)
1 / 54
6:31:49

2013

5 Races | 339 mi.

Rampage the Roots

Aug 23rd 2013
| Pony, MT
Distance
100 Miles
Overall
1 / 12
Division (M)
1 / 10
19:40:00

Mystery Ranch Ultra Marathons

Aug 23rd 2013
| PONY, MT
Distance
100 Miles
Overall
1 / 12
Division (M)
1 / 10
19:40:00

Angels Staircase

Aug 11th 2013
| Carlton, WA
Distance
60 KM
Overall
2 / 75
Division (M)
2 / 55
5:30:28

Devil's Backbone

Jul 13th 2013
| Bozeman, MT
Distance
50 Miles
Overall
1 / 21
Division (M)
1 / 18
8:24:00

Bighorn

Jun 15th 2013
| Dayton, WY
Distance
52 Miles
Overall
1 / 145
Division (M)
1 / 94
7:17:05

2012

6 Races | 274 mi.
Distance
100 Miles
Overall
1 / 16
Division (M)
1 / 11
21:06:36

Thunderbolt Creek

Jun 30th 2012
| Helena, MT
Distance
50 KM
Overall
1 / 28
Division (M)
1 / 17
4:01:04

Sun Mountain

May 20th 2012
| Winthrop, WA
Distance
50 Miles
Overall
1 / 56
Division (M)
1 / 35
6:08:32

Gorge Waterfalls

Mar 25th 2012
| Cascade Locks, OR
Distance
50 KM
Overall
2 / 211
Division (M)
2 / 118
3:29:33

Orcas Island 50k

Feb 4th 2012
| Orcas Island, WA
Distance
50 KM
Overall
1 / 170
Division (M)
1 / 112
4:28:58

Wilson Creek Frozen 50K

Jan 21st 2012
| Melba, ID
Distance
50 KM
Overall
1 / 43
Division (M)
1 / 35
5:08:02

2011

3 Races | 111 mi.

Le Grizz

Oct 8th 2011
| Polebridge, MT
Distance
50 Miles
Overall
1 / 74
Division (M)
1 / 53
5:57:39

Orcas Island 50k

Feb 5th 2011
| Orcas Island, WA
Distance
50 KM
Overall
2 / 129
Division (M)
2 / 90
4:59:39

Capitol Peak Mega Fat Ass

Jan 15th 2011
| Olympia, WA
Distance
30 Miles
Overall
3 / 43
Division (M)
3 / 33
5:10:00
33
Races
15y 0m 27d
Longevity
1,921
Lifetime Miles

Personal Bests

50k (10)
3:29:33
2012
50m (6)
5:57:39
2011
100k (1)
8:57:06
2015
100m (10)
15:17:28
2015
6hr (1)
28
2026

Distance by Year

2026
28 Miles
1 Race
2025
31 Miles
1 Race
2024
150 Miles
2 Races
2023
100 Miles
1 Race
2022
67 Miles
1 Race
2021
34 Miles
1 Race
2019
131 Miles
2 Races
2018
131 Miles
2 Races
2017
31 Miles
1 Race
2016
31 Miles
1 Race
2015
212 Miles
3 Races
2014
250 Miles
3 Races
2013
339 Miles
5 Races
2012
274 Miles
6 Races
2011
111 Miles
3 Races

Multiple Performances

2025
12th Place
2019
4th Place
2017
7th Place
2023
3rd Place
2019
1st Place
2012
1st Place
2011
2nd Place

6:31:30

50 KM

22:08:45

100 Miles

22:08:45

100 Miles

9:35:56

50 Miles

3rd Place

20:21:23

100 Miles

12:44:39

108 KM

12:44:39

108 KM

5:36:14

55 KM

Masters Course Record

5:36:14

55 KM

5:36:14

55 KM

5:52:44

50 KM

1st Place

19:30:05

100 Miles

3:46:07

50 KM

3:46:07

50 KM

15:17:28

100 Miles

8:57:06

100 KM

17:56:50

100 Miles

15:19:39

100 Miles

6:31:49

50 Miles

Course Record

6:31:49

50 Miles

5:30:28

60 KM

1st Place

7:17:05

52 Miles

Course Record

7:17:05

52 Miles

Course Record

7:17:05

50 Miles

4:01:04

50 KM

6:08:32

50 Miles

Course Record

6:08:32

50 Miles

3:29:33

50 KM

4:28:58

50 KM

5:08:02

50 KM

1st Place

5:57:39

50 Miles

4:59:39

50 KM

5:10:00

30 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+

Weekly Newsletter

A roundup of the week's content and most recent race results. Sent once a week on Thursday.

Recent Results

Lake to Ocean 100K
Port Mayaka, FL - 19 finishers
100 KM
Salt Lake Foothills Trail Races
Salt Lake City, UT - 84 finishers
50 Miles | 50 KM
Worlds End Ultramarathons
Forksville, PA - 299 finishers
100 KM | 50 KM
South Ridge Trail Challenge
Allison Park, PA - 18 finishers
50 KM
Momentus Backyard Ultra
Monroe, NC - 74 finishers
Backyard
The Sticks
Norton, KS - 72 finishers
72 Hours | 48 Hours | 24 Hours | 12 Hours | 6 Hours
Great Mansfield Outdoors
Mansfield, ON - 56 finishers
100 KM | 50 KM
Cinderella Trail - Spring
Oakland, CA - 28 finishers
50 KM
View All Results