Dennis Boic (M50)

2026

1 Race | 100 mi.

Grandmaster Ultras

Feb 27th 2026
| Mesquite, NV
Distance
100 Miles
Overall
1 / 40
Division (M)
1 / 23
22:46:00

2025

5 Races | 260 mi.

Rio Del Lago

Nov 1st 2025
| Granite Bay, CA
Distance
100 Miles
Overall
13 / 197
Division (M)
8 / 139
19:46:30

California Fall Classic 100K and 55K

Oct 18th 2025
| Healdsburg, CA
Distance
55 KM
Overall
84 / 102
Division (M)
55 / 66
8:57:01

Tahoe Rim Trail

Jul 19th 2025
| Carson City, NV
Distance
50 KM
Overall
59 / 115
Division (M)
42 / 81
7:48:26

Headwaters Trail Runs

Jun 21st 2025
| Mount Shasta, CA
Distance
52 KM
Overall
5 / 81
Division (M)
5 / 52
5:49:55

Sonoma Fall Classic

Feb 1st 2025
| Healdsburg, CA
Distance
100 KM
Overall
1 / 42
Division (M)
1 / 37
11:56:21

2024

3 Races | 300 mi.

Rio Del Lago

Nov 2nd 2024
| Granite Bay, CA
Distance
100 Miles
Overall
4 / 204
Division (M)
3 / 147
17:29:19

Tahoe Rim Trail

Jul 20th 2024
| Carson City, NV
Distance
100 Miles
Overall
14 / 112
Division (M)
12 / 87
25:40:12

Western States 100

Jun 29th 2024
| Olympic Valley, CA
Distance
100 Miles
Overall
73 / 286
Division (M)
52 / 224
22:49:41

2023

2 Races | 200 mi.

Tahoe Rim Trail

Jul 15th 2023
| Carson City, NV
Distance
100 Miles
Overall
3 / 115
Division (M)
3 / 97
23:14:25

Western States 100

Jun 24th 2023
| Olympic Valley, CA
Distance
100 Miles
Overall
42 / 328
Division (M)
29 / 260
20:57:37

2022

2 Races | 162 mi.

Tahoe Rim Trail

Jul 16th 2022
| Carson City, NV
Distance
100 Miles
Overall
1 / 71
Division (M)
1 / 62
22:19:47

Canyons Endurance Runs

Apr 23rd 2022
| Auburn, CA
Distance
100 KM
Overall
99 / 421
Division (M)
77 / 329
12:52:43

2021

3 Races | 262 mi.

Rio Del Lago

Nov 6th 2021
| Granite Bay, CA
Distance
100 Miles
Overall
67 / 250
Division (M)
52 / 174
24:31:34

Tahoe Rim Trail

Jul 17th 2021
| Carson City, NV
Distance
100 Miles
Overall
2 / 98
Division (M)
2 / 79
22:20:28

Canyons Endurance Runs

Apr 24th 2021
| Auburn, CA
Distance
100 KM
Overall
41 / 247
Division (M)
31 / 191
11:55:21

2020

1 Race | 50 mi.

Mt Shasta Trail Runs

Jun 20th 2020
| Mt Shasta, CA
Distance
50 Miles
Overall
3 / 60
Division (M)
2 / 45
9:15:41

2019

3 Races | 193 mi.

Two Peaks

Nov 16th 2019
| Redding, CA
Distance
50 KM
Overall
14 / 17
Division (M)
10 / 11
9:08:16

Tahoe Rim Trail

Jul 20th 2019
| Carson City, NV
Distance
100 Miles
Overall
3 / 156
Division (M)
3 / 120
22:12:53

Black Canyon Ultras

Feb 16th 2019
| Mayer, AZ
Distance
100 KM
Overall
62 / 516
Division (M)
54 / 380
10:27:24

2018

3 Races | 264 mi.

Tahoe Rim Trail

Jul 21st 2018
| Carson City, NV
Distance
100 Miles
Overall
7 / 142
Division (M)
7 / 111
23:39:07

Miwok

May 5th 2018
| Stinson Beach, CA
Distance
100 KM
Overall
35 / 286
Division (M)
31 / 213
11:29:37

The 4MPH Challenge

Mar 17th 2018
| Whiskeytown, CA
Duration
Backyard
Overall
4 / 36
Division (M)
4 / 23
102

2017

2 Races | 166 mi.

Tahoe Rim Trail

Jul 15th 2017
| Carson City, NV
Distance
100 Miles
Overall
24 / 150
Division (M)
23 / 121
25:12:11

The 4MPH Challenge

Mar 18th 2017
| Whiskeytown, CA
Duration
Backyard
Overall
14 / 43
Division (M)
11 / 24
66

2016

3 Races | 193 mi.

Tahoe Rim Trail

Jul 16th 2016
| Carson City, NV
Distance
100 Miles
Overall
38 / 155
Division (M)
34 / 133
27:49:09

Quicksilver

May 14th 2016
| San Jose, CA
Distance
100 KM
Overall
24 / 165
Division (M)
20 / 127
12:37:54

Whiskeytown Waterfalls Races

Apr 16th 2016
| Whiskeytown, CA
Distance
50 KM
Overall
3 / 38
Division (M)
3 / 24
5:29:29

2015

2 Races | 150 mi.

Pine to Palm

Sep 12th 2015
| Williams, OR
Distance
100 Miles
Overall
49 / 75
Division (M)
43 / 62
29:31:56

American River

Apr 4th 2015
| Folsom, CA
Distance
50 Miles
Overall
56 / 631
Division (M)
47 / 374
8:30:11
30
Races
10y 10m 2d
Longevity
2,301
Lifetime Miles

Personal Bests

50k (3)
5:29:29
2016
50m (2)
8:30:11
2015
100k (6)
10:27:24
2019
100m (15)
17:29:19
2024
Backyard (2)
102
2018

Distance by Year

2026
100 Miles
1 Race
2025
260 Miles
5 Races
2024
300 Miles
3 Races
2023
200 Miles
2 Races
2022
162 Miles
2 Races
2021
262 Miles
3 Races
2020
50 Miles
1 Race
2019
193 Miles
3 Races
2018
264 Miles
3 Races
2017
166 Miles
2 Races
2016
193 Miles
3 Races
2015
150 Miles
2 Races

Multiple Performances

2025
8th Place
2024
3rd Place
2021
52nd Place
2024
12th Place
2023
3rd Place
2022
1st Place
2021
2nd Place
2024
52nd Place
2023
29th Place
2019
3rd Place
2018
7th Place
2017
23rd Place
2016
34th Place
2018
4th Place
2017
11th Place

22:46:00

100 Miles

22:46:00

100 Miles

11:56:21

100 KM

11:56:21

100 KM

17:29:19

100 Miles

Masters Winner

17:29:19

100 Miles

23:14:25

100 Miles

Masters Winner

23:14:25

100 Miles

22:19:47

100 Miles

Masters Winner

22:19:47

100 Miles

22:20:28

100 Miles

Masters Winner

22:20:28

100 Miles

9:15:41

50 Miles

9:15:41

50 Miles

22:12:53

100 Miles

5:29:29

50 KM

5:29:29

50 KM

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

Worlds End Ultramarathons
Forksville, PA - 299 finishers
100 KM | 50 KM
Rabid Raccoon 100
Beaver Falls, PA - 275 finishers
100 Miles | 100 KM
Blackfoot Ultra
Edmonton, AB - 124 finishers
100 KM | 50 Miles | 50 KM
Mohican Trail Run
Loudonville, OH - 251 finishers
100 Miles | 50 Miles
Cinderella Trail - Spring
Oakland, CA - 28 finishers
50 KM
Coz's Backyard Ultra
Holland Patent, NY - 16 finishers
Backyard
Salt Lake Foothills Trail Races
Salt Lake City, UT - 84 finishers
50 Miles | 50 KM
North Fork 50 Mile/50K
Pine, CO - 255 finishers
50 Miles | 50 KM
Chesterfield Gorge Ultra
West Chesterfield, MA - 120 finishers
100 Miles | 100 KM | 50 Miles | 50 KM
View All Results