Michelle Jeffrey

Born : 1975 Cat. W50 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 Kingdom

41,7%

Rank quotient ?This runner's calculation uses 24 eligible race(s): Σ(rank − 1) = 2 168; Σ finishers = 5 205. 2 168 / 5 205 × 100 = 41.65%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed24

Km — ultra races2 296 km

> 100 km6

> 160 km4

Longest race177,0 km

15th Hardmoors 110 — 28/5/2022

Km per year (ultra races)

266

2022

169

2023

2024

2025

2026

Race types (share of distance)

Trail100,0%

Wins & podiums (ultra)

🏆 Win0

🏆 Win F0

🏅 Top 30

🏅 Top 3 F1

Longest winning streak0

Current streak0

Records

50 km6h13'26 100 km13h18'19 50 mi13h15'04

HISTORY

24 race(s)

Date		Race	Perf.	Rk
2026
21.03	55mi	17th Hardmoors 55	11:49:40 h	75
2023
28.07	105mi	Lakeland 100 Mile	38:52:44 h	333
2022
28.05	110mi	15th Hardmoors 110	29:28:35 h	24
26.03	55mi	13th Hardmoors 55	12:19:36 h	72
2021
16.10	70km	6th Yorkshire 3 Peaks Ultra 70km	9:31:21 h	16
29.05	110mi	14th Hardmoors 110	31:58:15 h	43
2020
24.10	55mi	11th Hardmoors 55	12:40:57 h	88
19.09	62mi	10th Hardmoors 60	15:30:32 h	117
22.08	110mi	13th Hardmoors 110	32:38:45 h	44
2019
19.10	70km	4th Yorkshire 3 Peaks Ultra 70km	10:27:10 h	23
14.09	62mi	9th Hardmoors 60	13:18:19 h	33
27.07	50mi	Lakeland 50 Mile	13:15:04 h	285
29.06	102km	4th St. Cuthbert's Way 100 km Ultra	15:57:40 h	16
16.03	50mi	10th Hardmoors 55 (50miles)	13:35:11 h	122
2018
18.11	67km	2nd Tweed Valley Ultra 65km	8:24:03 h	66
20.10	70km	3rd Yorkshire 3 Peaks Ultra	11:18:00 h	30
15.09	62mi	8th Hardmoors 60	15:08:21 h	86
08.07	55km	5th Ultimate Trails Challenge 55 km	8:52:03 h	133
28.04	53mi	13th Highland Fling Race	11:44:37 h	300
2017
19.11	65km	1st Tweed Valley Ultra 65km	7:47:32 h	38
21.10	50km	4th Ennerdale Trail Run	6:13:26 h	34
17.06	111km	6th The Wall Ultra Run 111 km nonstopp	16:30:01 h	138
29.04	75km	1st North Tyne Trail Ultra 75km	9:51:56 h	19
08.04	50km	4th Kielder 50k Ultra Trail	6:13:37 h	57

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	28/5/2022	15th Hardmoors 110	177,03	×4
✓ 2	29/5/2021	14th Hardmoors 110	177,03	×4
✓ 3	22/8/2020	13th Hardmoors 110	177,03	×4
✓ 4	28/7/2023	Lakeland 100 Mile	168,98	×3
✓ 5	17/6/2017	6th The Wall Ultra Run 111 km nonstopp	111,00	×2
✓ 6	29/6/2019	4th St. Cuthbert's Way 100 km Ultra	102,00	×2
✓ 7	19/9/2020	10th Hardmoors 60	99,78	×2
✓ 8	14/9/2019	9th Hardmoors 60	99,78	×2
✓ 9	15/9/2018	8th Hardmoors 60	99,78	×2
✓ 10	21/3/2026	17th Hardmoors 55	88,51	×2
✓ 11	26/3/2022	13th Hardmoors 55	88,51	×2
✓ 12	24/10/2020	11th Hardmoors 55	88,51	×2
✓ 13	28/4/2018	13th Highland Fling Race	85,30	×1
✓ 14	27/7/2019	Lakeland 50 Mile	80,47	×1
✓ 15	16/3/2019	10th Hardmoors 55 (50miles)	80,47	×1
✓ 16	29/4/2017	1st North Tyne Trail Ultra 75km	75,00	×1
✓ 17	16/10/2021	6th Yorkshire 3 Peaks Ultra 70km	70,00	×1
✓ 18	19/10/2019	4th Yorkshire 3 Peaks Ultra 70km	70,00	×1
✓ 19	20/10/2018	3rd Yorkshire 3 Peaks Ultra	70,00	×1
✓ 20	18/11/2018	2nd Tweed Valley Ultra 65km	67,00	×1
✓ 21	19/11/2017	1st Tweed Valley Ultra 65km	65,00	×1
✓ 22	8/7/2018	5th Ultimate Trails Challenge 55 km	55,00	×1
✓ 23	21/10/2017	4th Ennerdale Trail Run	50,00	×1
✓ 24	8/4/2017	4th Kielder 50k Ultra Trail	50,00	×1