Justin Merrigan

Born : 1992 Cat. M23 Ultrarunner since 2022

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 Kingdom

United States

26,0%

Rank quotient ?This runner's calculation uses 19 eligible race(s): Σ(rank − 1) = 459; Σ finishers = 1 766. 459 / 1 766 × 100 = 25.99%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed19

Km — ultra races2 563 km

> 100 km11

> 160 km10

> 200 km2

> 24h2

Longest race321,9 km

6th Swammie Shuffle 200 — 22/2/2026

Km per year (ultra races)

317

2022

316

2023

491

2024

906

2025

533

2026

Race types (share of distance)

Road31,4%

Trail68,6%

Wins & podiums (ultra)

🏆 Win2

🏆 Win M2

🏅 Top 35

🏅 Top 3 M5

Longest winning streak1

Current streak0

Records

50 km4h59'37 100 km12h17'33 50 mi10h22'12 100 mi22h51'16 12 h76,04 km 24 h166,29 km

HISTORY

19 race(s)

Date		Race	Perf.	Rk
2026
20.06	50km	10th Night Train 50k	4:59:37 h	13
06.06	100mi	48th Old Dominion 100 Mile Endurance Run	24:36:38 h	33
22.02	200mi	6th Swammie Shuffle 200	2d 09:06:00 h	1 🏆
2025
01.11	24h	10th Tideland 24 Hours	161.855 km	7
15.08	100mi	4th Jigger Johnson 100M	2d 01:46:02 h	21
17.05	100mi	31st Massanutten Mountain Trails 100 Mile	28:24:53 h	28
26.04	100km	Chiltern Hills 100K	12:17:33 h	22
23.02	200mi	5th Swammie Shuffle 200	2d 23:42:00 h	2 🥈
2024
26.10	100mi	5th Rim to River 100 Mile Race	23:37:08 h	30
05.10	100mi	8th Allison Woods Halloween Hobble 100 Mile Endurance Run	22:51:16 h	1 🏆
18.05	50km	10th Quest for the Crest 50k	11:33:52 h	48
30.03	74mi	12th Georgia Death Race	19:41:21 h	45
2023
04.11	24h	8th Tideland 24 Hours	166.289 km	3 🥉
28.10	50km	11th Georgia Sky to Summit 50k	6:38:09 h	16
24.06	50km	7th Night Train 50k	5:36:33 h	19
22.04	50km	11th Hyner View Trail Challenge 50 km	7:07:03 h	165
2022
05.11	100mi	3rd Mountaineer Rumble 100 Mile Race	28:53:59 h	3 🥉
22.05	50mi	1st Highball to Thurmond Ultra 50 Miles	10:22:12 h	16
07.05	12h	2nd EHQ Valley Falls 12 Hour Race	76.041 km	5

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	22/2/2026	6th Swammie Shuffle 200	321,87	×6
✓ 2	23/2/2025	5th Swammie Shuffle 200	321,87	×6
✓ 3	4/11/2023	8th Tideland 24 Hours	166,29	×3
✓ 4	1/11/2025	10th Tideland 24 Hours	161,86	×3
✓ 5	6/6/2026	48th Old Dominion 100 Mile Endurance Run	160,93	×3
✓ 6	15/8/2025	4th Jigger Johnson 100M	160,93	×3
✓ 7	17/5/2025	31st Massanutten Mountain Trails 100 Mile	160,93	×3
✓ 8	26/10/2024	5th Rim to River 100 Mile Race	160,93	×3
✓ 9	5/10/2024	8th Allison Woods Halloween Hobble 100 Mile Endurance Run	160,93	×3
✓ 10	5/11/2022	3rd Mountaineer Rumble 100 Mile Race	160,93	×3
✓ 11	30/3/2024	12th Georgia Death Race	119,09	×2
✓ 12	26/4/2025	Chiltern Hills 100K	100,00	×2
✓ 13	22/5/2022	1st Highball to Thurmond Ultra 50 Miles	80,47	×1
✓ 14	7/5/2022	2nd EHQ Valley Falls 12 Hour Race	76,04	×1
✓ 15	20/6/2026	10th Night Train 50k	50,00	×1
✓ 16	18/5/2024	10th Quest for the Crest 50k	50,00	×1
✓ 17	28/10/2023	11th Georgia Sky to Summit 50k	50,00	×1
✓ 18	24/6/2023	7th Night Train 50k	50,00	×1
✓ 19	22/4/2023	11th Hyner View Trail Challenge 50 km	50,00	×1