Mac Jonson

Born : 1985 Cat. M40 Ultrarunner since 2016

DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.

DUV-index+ ?Largest integer N such that the race distances provide at least N complete segments of N km in total. A single long race may therefore contribute several segments. See the DUV-Index tab for the detailed calculation. calculation details

Countries visited ?

United States

46,8%

Rank quotient ?This runner's calculation uses 21 eligible race(s): Σ(rank − 1) = 1 975; Σ finishers = 4 220. 1 975 / 4 220 × 100 = 46.80%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed21

Km — ultra races1 130 km

Longest race100,0 km

9th Sun Mountain 100 km Trail Races — 20/5/2017

Km per year (ultra races)

2022

100

2023

2024

2025

2026

Race types (share of distance)

Trail100,0%

Records

50 km5h11'32 100 km13h20'23 50 mi10h56'56

HISTORY

21 race(s)

Date		Race	Perf.	Rk
2024
08.06	50km	15th Vashon Ultramarathon 50k	5:44:44 h	25
2023
07.10	50km	10th Middle Fork 50k	7:01:12 h	15
18.03	50km	29th Chuckanut 50K	6:28:46 h	304
2022
05.11	50km	5th Wallace Falls Trail Run 50km	7:34:54 h	11
2021
17.07	50km	5th Backcountry Rise 50 km Race	8:37:30 h	94
2019
03.08	50km	1st Tiger Peak Challenge	7:02:01 h	7
16.03	50km	27th Chuckanut 50K	6:12:01 h	197
2018
23.06	50km	8th Taylor Mountain 50 km Trail Run	5:25:34 h	14
19.05	50km	10th Sun Mountain 50 km Trail Races	5:59:40 h	86
17.03	50km	26th Chuckanut 50K	5:25:34 h	120
03.02	50km	13th Orcas Island 50k	6:45:53 h	53
2017
07.10	50km	4th Oregon Coast 50k	5:58:09 h	109
23.09	50km	4th Middle Fork 50k	5:52:43 h	9
20.05	100km	9th Sun Mountain 100 km Trail Races	13:20:23 h	27
18.03	50km	25th Chuckanut 50K	5:46:14 h	157
04.02	50km	12th Orcas Island 50k	6:56:45 h	88
2016
03.12	50mi	10th Endurance Challenge - California Trail 50 Mile	10:56:56 h	311
24.09	50km	21st Cle Elum Ridge 50k	5:58:57 h	13
21.05	50km	8th Sun Mountain 50 km Trail Races	5:11:32 h	21
19.03	50km	24th Chuckanut 50K	6:16:32 h	184
06.02	50km	11th Orcas Island 50k	7:17:47 h	151

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	20/5/2017	9th Sun Mountain 100 km Trail Races	100,00	×4
✓ 2	3/12/2016	10th Endurance Challenge - California Trail 50 Mile	80,47	×3
✓ 3	8/6/2024	15th Vashon Ultramarathon 50k	50,00	×2
✓ 4	7/10/2023	10th Middle Fork 50k	50,00	×2
✓ 5	18/3/2023	29th Chuckanut 50K	50,00	×2
✓ 6	5/11/2022	5th Wallace Falls Trail Run 50km	50,00	×2
✓ 7	17/7/2021	5th Backcountry Rise 50 km Race	50,00	×2
✓ 8	3/8/2019	1st Tiger Peak Challenge	50,00	×2
✓ 9	16/3/2019	27th Chuckanut 50K	50,00	×2
✓ 10	23/6/2018	8th Taylor Mountain 50 km Trail Run	50,00	×2
✓ 11	19/5/2018	10th Sun Mountain 50 km Trail Races	50,00	×2
✓ 12	17/3/2018	26th Chuckanut 50K	50,00	×2
✓ 13	3/2/2018	13th Orcas Island 50k	50,00	×2
✓ 14	7/10/2017	4th Oregon Coast 50k	50,00	×2
✓ 15	23/9/2017	4th Middle Fork 50k	50,00	×2
✓ 16	18/3/2017	25th Chuckanut 50K	50,00	×2
✓ 17	4/2/2017	12th Orcas Island 50k	50,00	×2
✓ 18	24/9/2016	21st Cle Elum Ridge 50k	50,00	×2
✓ 19	21/5/2016	8th Sun Mountain 50 km Trail Races	50,00	×2
✓ 20	19/3/2016	24th Chuckanut 50K	50,00	×2
✓ 21	6/2/2016	11th Orcas Island 50k	50,00	×2