Mark Sibert

Born : 1972 Cat. M50 Ultrarunner since 2017

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

59,2%

Rank quotient ?This runner's calculation uses 24 eligible race(s): Σ(rank − 1) = 1 168; Σ finishers = 1 973. 1 168 / 1 973 × 100 = 59.20%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed24

Km — ultra races1 878 km

> 100 km7

> 160 km2

> 24h3

> 48h2

Longest race160,9 km

9th Eastern States 100 Mile — 12/8/2023

Km per year (ultra races)

2022

444

2023

274

2024

2025

2026

Race types (share of distance)

Road11,6%

Trail88,4%

Wins & podiums (ultra)

🏆 Win0

🏆 Win M0

🏅 Top 31

🏅 Top 3 M2

Longest winning streak0

Current streak0

Records

50 km5h33'15 50 mi12h30'53 100 mi28h39'11 12 h95,37 km 24 h122,31 km

HISTORY

24 race(s)

Date		Race	Perf.	Rk
2024
16.11	16h	2nd The 16 Hour Lock-In	101.388 km	6
01.06	50km	1st Ridge to Rails 50k	7:07:42 h	73
24.02	24h	1st Holly Springs Race Against the Sun	122.310 km	6
2023
12.08	100mi	9th Eastern States 100 Mile	35:18:08 h	115
08.07	50km	28th Catoctin 50k Trail Run	7:57:28 h	35
16.04	50km	12th Mountains to Sea Challenge	5:36:01 h	10
25.03	74mi	11th Georgia Death Race	24:28:00 h	152
04.02	40mi	31st Uwharrie Mountain Run	10:29:38 h	53
2021
02.10	50km	8th Pilot Mountain to Hanging Rock 50K Ultra	8:59:24 h	133
29.05	52h	5th Veterans Memorial 150 Race	122.632 km	17
02.05	50mi	6th Grayson Highlands 50 Mile Race	12:30:53 h	96
06.02	40mi	29th Uwharrie Mountain Run	9:54:15 h	31
2019
25.05	52h	3rd Veterans Memorial 150 Race	62.764 km	25
06.04	100mi	25th Umstead Endurance Run 100 Miles	28:39:11 h	133
10.03	50km	3rd Wicked Root 50k - Sunday Run	7:29:53 h	10
09.03	50km	3rd Wicked Root 50k - Saturday Run	6:34:23 h	10
02.02	40mi	5th Rut Rogue 40s	8:47:48 h	14
12.01	50km	1st South Mountains Marathons	8:06:30 h	66
2018
21.07	50km	2nd Wicked Grit Challenge	6:57:05 h	5
31.03	68mi	6th Georgia Death Race	22:17:47 h	132
10.03	50km	2nd Wicked Root 50 km Race	5:50:48 h	21
2017
06.05	50km	2nd Grayson Highlands 50km Race	6:14:12 h	38
22.04	12h	Jordan Lake 12-Hour Challenge	95.368 km	2 🥈
18.03	50km	1st Wicked Root 50 km Race	5:33:15 h	9

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	12/8/2023	9th Eastern States 100 Mile	160,93	×4
✓ 2	6/4/2019	25th Umstead Endurance Run 100 Miles	160,93	×4
✓ 3	29/5/2021	5th Veterans Memorial 150 Race	122,63	×3
✓ 4	24/2/2024	1st Holly Springs Race Against the Sun	122,31	×3
✓ 5	25/3/2023	11th Georgia Death Race	119,09	×3
✓ 6	31/3/2018	6th Georgia Death Race	109,44	×2
✓ 7	16/11/2024	2nd The 16 Hour Lock-In	101,39	×2
✓ 8	22/4/2017	Jordan Lake 12-Hour Challenge	95,37	×2
✓ 9	2/5/2021	6th Grayson Highlands 50 Mile Race	80,47	×2
✓ 10	4/2/2023	31st Uwharrie Mountain Run	64,37	×1
✓ 11	6/2/2021	29th Uwharrie Mountain Run	64,37	×1
✓ 12	2/2/2019	5th Rut Rogue 40s	64,37	×1
✓ 13	25/5/2019	3rd Veterans Memorial 150 Race	62,76	×1
✓ 14	1/6/2024	1st Ridge to Rails 50k	50,00	×1
✓ 15	8/7/2023	28th Catoctin 50k Trail Run	50,00	×1
✓ 16	16/4/2023	12th Mountains to Sea Challenge	50,00	×1
✓ 17	2/10/2021	8th Pilot Mountain to Hanging Rock 50K Ultra	50,00	×1
✓ 18	10/3/2019	3rd Wicked Root 50k - Sunday Run	50,00	×1
✓ 19	9/3/2019	3rd Wicked Root 50k - Saturday Run	50,00	×1
✓ 20	12/1/2019	1st South Mountains Marathons	50,00	×1
✓ 21	21/7/2018	2nd Wicked Grit Challenge	50,00	×1
✓ 22	10/3/2018	2nd Wicked Root 50 km Race	50,00	×1
✓ 23	6/5/2017	2nd Grayson Highlands 50km Race	50,00	×1
✓ 24	18/3/2017	1st Wicked Root 50 km Race	50,00	×1