Mark Caldwell

Born : 1970 Cat. M55 Ultrarunner since 2009

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 ?

France

United Kingdom

Italy

27,7%

Rank quotient ?This runner's calculation uses 65 eligible race(s): Σ(rank − 1) = 4 304; Σ finishers = 15 514. 4 304 / 15 514 × 100 = 27.74%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed77

Km — ultra races7 970 km

> 100 km25

> 160 km11

> 200 km5

> 24h2

Longest race431,3 km

10th Spine Race — 9/1/2022

Km per year (ultra races)

1 037

2022

739

2023

540

2024

533

2025

2026

Race types (share of distance)

Trail88,2%

Stage9,8%

Elim.2,0%

Wins & podiums (ultra)

🏆 Win1

🏆 Win M1

🏅 Top 36

🏅 Top 3 M6

Longest winning streak1

Current streak0

Records

100 mi31h50'40 24 h57,94 km Backyard24 loops

HISTORY

65 race(s)

Date		Race	Perf.	Rk
2025
01.09	380km/6stages	10th Dragon's Back Race	3d 00:27:44 h	38
21.06	153km	39th West Highland Way Race	28:01:09 h	99
2024
17.11	65km	7th Tweed Valley Ultra 65km	7:45:15 h	38
26.08	148km	14ème Sur les Traces des Ducs de Savoie	39:37:21 h	732
22.06	153km	38th West Highland Way Race	23:27:30 h	45
25.05	55mi	14th Cateran Trail 55 Mile Ultra	11:38:27 h	11
27.04	53mi	16th Highland Fling Race	9:58:51 h	77
2023
17.09	49km	6th Ben Nevis Ultra	9:51:00 h	90
17.06	153km	37th West Highland Way Race	23:23:55 h	42
21.05	400km/8stages	Cape Wrath Ultra	2d 06:37:54 h	8
15.04	40mi	10th Lakes Mountain 40	8:01:17 h	5
05.02	7h	Falkirk 7 Hour Ultra Trail Race	72.648 km	15
2022
29.10	38mi	9th Jedburgh Three Peaks Ultramarathon	6:31:53 h	10
04.09	35mi	Tiree Ultramarathon	6:27:55 h	44
23.07	Backyard Ultra	1st Highlander Last One Standing	160.944 km (24h)	20
18.06	153km	36th West Highland Way Race	20:57:12 h	26
14.05	55mi	12th Cateran Trail 55 Mile Ultra	12:48:19 h	31
23.04	53mi	15th Highland Fling Race	9:37:39 h	32
09.01	268mi	10th Spine Race	5d 04:19:51 h	26
2021
27.08	171km	18ème Ultra Trail Tour du Mont Blanc	42:42:48 h	889
03.07	71mi	7th The Great Glen Ultra	13:21:28 h	8
2019
21.12	38mi	10th Tour de Helvellyn	7:15:24 h	23
17.11	66.4km	3rd Tweed Valley Ultra 65km	6:26:20 h	11
26.07	100mi	Lakeland 100 Mile	31:50:40 h	96
25.05	74mi	Skye Trail Ultra	17:23:30 h	3 🥉
27.04	53mi	14th Highland Fling Race	8:45:58 h	25
2018
01.12	55mi	Montane Cheviot Goat	11:51:41 h	9
23.06	153km	34th West Highland Way Race	19:40:42 h	18
19.05	55mi	10th Cateran Trail 55 Mile Ultra	11:18:20 h	21
2017
16.12	38mi	7th Tour de Helvellyn	8:16:38 h	49
10.09	35mi	Tiree Ultramarathon	6:39:41 h	40
01.09	167.7km	15ème Ultra Trail Tour du Mont Blanc	41:47:20 h	967
05.08	42mi	Devil o' the Highlands Footrace	7:43:40 h	49
01.07	55km	4th Ultimate Trails Challenge 55 km	8:23:55 h	91
24.06	153km	33rd West Highland Way Race	19:02:54 h	6
13.05	55mi	9th Cateran Trail 55 Mile Ultra	9:00:33 h	7
29.04	53mi	12th Highland Fling Race 53 Mile	9:56:02 h	98
2016
29.10	38mi	5th Jedburgh Three Peaks Ultramarathon	6:13:09 h	23
18.06	153km	32nd West Highland Way Race	18:16:32 h	7
13.05	110mi	3rd Double Cateran Trail 110 Mile Ultra	23:36:50 h	3 🥉
30.04	53mi	11th Highland Fling Race 53 Mile	9:00:03 h	41
2015
25.04	53mi	10th Highland Fling Race 53 Mile	8:52:30 h	34
14.03	33mi	D33 – Deeside Way Ultra	4:03:08 h	15
2014
13.09	41mi	River Ayr Way Challenge	7:00:50 h	13
02.08	43mi	Devil o' the Highlands 43 Mile Footrace	6:27:38 h	7
21.06	153km	30th West Highland Way Race	21:35:17 h	36
26.04	53mi	9th Highland Fling Race 53 Mile	9:42:30 h	64
11.01	268mi	Spine Race	6d 23:13:00 h	28
2013
27.10	38mi	2nd Jedburgh Three Peaks ultramarathon	6:23:58 h	10
12.01	108mi	Dare 2b Spine Challenger	32:34:00 h	2 🥈
2012
01.09	24h	Glenmore 24 hour Trail Race	57.936 km	21
16.06	67mi	6th Kintyre Way Ultra-67	11:51:00 h	1 🏆
28.04	53mi	7th Highland Fling Race 53 Mile	9:15:13 h	25
13.01	268mi	1st Spine Race	6d 14:55:00 h	3 🥉
2011
27.08	36mi	Speyside Way Race	4:44:10 h	5
18.06	153km	27th West Highland Way Race	19:36:14 h	11
21.05	55mi	3rd Cateran Trail 55 Mile Ultra	8:50:57 h	2 🥈
30.04	53mi	6th Highland Fling Race 53 Mile	10:54:04 h	115
19.03	33mi	D33 – Deeside Way Ultra	3:58:12 h	8
2010
10.09	41mi	River Ayr Way Challenge	6:09:03 h	10
28.08	36mi	Speyside Way Race	4:56:48 h	10
19.06	153km	26th West Highland Way Race	22:14:30 h	33
24.04	53mi	5th Highland Fling Race 53 Mile	9:43:45 h	27
03.04	33mi	D33 – Deeside Way Ultra	4:04:42 h	9
2009
16.05	55mi	1st Cateran Trail 55 Mile Ultra	10:48:35 h	7

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	9/1/2022	10th Spine Race	431,30	×5
✓ 2	11/1/2014	Spine Race	431,30	×5
✓ 3	13/1/2012	1st Spine Race	431,30	×5
✓ 4	21/5/2023	Cape Wrath Ultra	400,00	×5
✓ 5	1/9/2025	10th Dragon's Back Race	380,00	×5
✓ 6	13/5/2016	3rd Double Cateran Trail 110 Mile Ultra	177,03	×2
✓ 7	12/1/2013	Dare 2b Spine Challenger	173,81	×2
✓ 8	27/8/2021	18ème Ultra Trail Tour du Mont Blanc (UTMB)	171,00	×2
✓ 9	1/9/2017	15ème Ultra Trail Tour du Mont Blanc (UTMB)	167,70	×2
✓ 10	23/7/2022	1st Highlander Last One Standing	160,94	×2
✓ 11	26/7/2019	Lakeland 100 Mile	160,93	×2
✓ 12	21/6/2025	39th West Highland Way Race	153,00	×2
✓ 13	22/6/2024	38th West Highland Way Race	153,00	×2
✓ 14	17/6/2023	37th West Highland Way Race	153,00	×2
✓ 15	18/6/2022	36th West Highland Way Race	153,00	×2
✓ 16	23/6/2018	34th West Highland Way Race	153,00	×2
✓ 17	24/6/2017	33rd West Highland Way Race	153,00	×2
✓ 18	18/6/2016	32nd West Highland Way Race	153,00	×2
✓ 19	21/6/2014	30th West Highland Way Race	153,00	×2
✓ 20	18/6/2011	27th West Highland Way Race	153,00	×2
✓ 21	19/6/2010	26th West Highland Way Race	153,00	×2
✓ 22	26/8/2024	14ème Sur les Traces des Ducs de Savoie (TDS)	148,00	×1
✓ 23	25/5/2019	Skye Trail Ultra	119,09	×1
✓ 24	3/7/2021	7th The Great Glen Ultra	114,26	×1
✓ 25	16/6/2012	6th Kintyre Way Ultra-67	107,83	×1
✓ 26	25/5/2024	14th Cateran Trail 55 Mile Ultra	88,51	×1
✓ 27	14/5/2022	12th Cateran Trail 55 Mile Ultra	88,51	×1
✓ 28	1/12/2018	Montane Cheviot Goat	88,51	×1
✓ 29	19/5/2018	10th Cateran Trail 55 Mile Ultra	88,51	×1
✓ 30	13/5/2017	9th Cateran Trail 55 Mile Ultra	88,51	×1
✓ 31	21/5/2011	3rd Cateran Trail 55 Mile Ultra	88,51	×1
✓ 32	16/5/2009	1st Cateran Trail 55 Mile Ultra	88,51	×1
✓ 33	27/4/2024	16th Highland Fling Race	85,30	×1
✓ 34	23/4/2022	15th Highland Fling Race	85,30	×1
✓ 35	27/4/2019	14th Highland Fling Race	85,30	×1
✓ 36	29/4/2017	12th Highland Fling Race 53 Mile	85,30	×1
✓ 37	30/4/2016	11th Highland Fling Race 53 Mile	85,30	×1
✓ 38	25/4/2015	10th Highland Fling Race 53 Mile	85,30	×1
✓ 39	26/4/2014	9th Highland Fling Race 53 Mile	85,30	×1
✓ 40	28/4/2012	7th Highland Fling Race 53 Mile	85,30	×1
✓ 41	30/4/2011	6th Highland Fling Race 53 Mile	85,30	×1
✓ 42	24/4/2010	5th Highland Fling Race 53 Mile	85,30	×1
✓ 43	5/2/2023	Falkirk 7 Hour Ultra Trail Race	72,65	—
✓ 44	2/8/2014	Devil o' the Highlands 43 Mile Footrace	69,20	—
✓ 45	5/8/2017	Devil o' the Highlands Footrace	67,59	—
✓ 46	17/11/2019	3rd Tweed Valley Ultra 65km	66,40	—
✓ 47	13/9/2014	River Ayr Way Challenge	65,98	—
✓ 48	10/9/2010	River Ayr Way Challenge	65,98	—
✓ 49	17/11/2024	7th Tweed Valley Ultra 65km	65,00	—
✓ 50	15/4/2023	10th Lakes Mountain 40	64,37	—
✓ 51	29/10/2022	9th Jedburgh Three Peaks Ultramarathon	61,16	—
✓ 52	21/12/2019	10th Tour de Helvellyn	61,16	—
✓ 53	16/12/2017	7th Tour de Helvellyn	61,16	—
✓ 54	29/10/2016	5th Jedburgh Three Peaks Ultramarathon	61,16	—
✓ 55	27/10/2013	2nd Jedburgh Three Peaks ultramarathon	61,16	—
✓ 56	27/8/2011	Speyside Way Race	57,94	—
✓ 57	28/8/2010	Speyside Way Race	57,94	—
58	1/9/2012	Glenmore 24 hour Trail Race	57,94	—
59	4/9/2022	Tiree Ultramarathon	56,33	—
60	10/9/2017	Tiree Ultramarathon	56,33	—
61	1/7/2017	4th Ultimate Trails Challenge 55 km	55,00	—
62	14/3/2015	D33 – Deeside Way Ultra	53,11	—
63	19/3/2011	D33 – Deeside Way Ultra	53,11	—
64	3/4/2010	D33 – Deeside Way Ultra	53,11	—
65	17/9/2023	6th Ben Nevis Ultra	49,00	—