Christopher Sayles

Born : 1979 Cat. M45 Ultrarunner since 2015

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 ?

Croatia

Spain

France

United Kingdom

Greece

38,9%

Rank quotient ?This runner's calculation uses 20 eligible race(s): Σ(rank − 1) = 1 913; Σ finishers = 4 922. 1 913 / 4 922 × 100 = 38.87%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed20

Km — ultra races3 933 km

> 100 km17

> 160 km13

> 200 km6

> 24h1

Longest race431,3 km

Summer Spine — 19/6/2021

Km per year (ultra races)

289

2022

724

2023

563

2024

246

2025

2026

Race types (share of distance)

Road18,5%

Trail77,4%

Elim.4,1%

Wins & podiums (ultra)

🏆 Win0

🏆 Win M0

🏅 Top 30

🏅 Top 3 M1

Longest winning streak0

Current streak0

Records

50 km5h23'56 100 km14h03'24 50 mi14h37'57 100 mi19h25'23 Backyard24 loops

HISTORY

20 race(s)

Date		Race	Perf.	Rk
2025
27.09	246km	42. Spartathlon	32:37:30 h	89
2024
26.10	100mi	The Track 100	19:25:23 h	7
24.04	250mi	10th Thames Ring 250 Miles	3d 08:51:57 h	4
2023
12.10	250mi	Lon Las Cymru Ultra	3d 14:00:00 h	7
31.03	200mi	The Tunnel Ultra	2d 06:11:05 h	4
2022
02.04	289km	3rd Northern Traverse 300km	2d 23:35:15 h	23
2021
06.11	Backyard Ultra	1st God’s Own Backyard Ultra	160.944 km (24h)	8
09.10	50mi	Lakes in a day Ultra	14:37:57 h	110
19.06	268mi	Summer Spine	5d 00:18:16 h	16
2020
31.01	102.5mi	7th The Arc of Attrition 100 Mile	33:58:13 h	96
2019
14.09	62mi	9th Hardmoors 60	14:03:24 h	50
12.04	168km	7th 100 Miles of Istria	28:43:09 h	72
2018
31.08	171km	16ème Ultra Trail Tour du Mont Blanc	39:36:01 h	694
23.02	125km	Transgrancanaria 125 km	22:45:39 h	335
2017
28.07	100mi	Lakeland 100 Mile	37:18:23 h	152
29.04	100mi	6th Thames Path 100	22:23:13 h	64
18.02	31mi	Waterway 30	5:23:56 h	32
2016
17.09	73mi	The Cumbria Way Ultra	22:48:28 h	41
02.07	110km	3rd Ultimate Trails Challenge 110 km	17:32:50 h	64
2015
27.06	110km	2nd Ultimate Trails Challenge 110 km	17:26:24 h	65

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	19/6/2021	Summer Spine	431,30	×7
✓ 2	24/4/2024	10th Thames Ring 250 Miles	402,34	×7
✓ 3	12/10/2023	Lon Las Cymru Ultra	402,34	×7
✓ 4	31/3/2023	The Tunnel Ultra	321,87	×5
✓ 5	2/4/2022	3rd Northern Traverse 300km	289,00	×5
✓ 6	27/9/2025	42. Spartathlon	246,00	×4
✓ 7	31/8/2018	16ème Ultra Trail Tour du Mont Blanc (UTMB)	171,00	×3
✓ 8	12/4/2019	7th 100 Miles of Istria	168,00	×2
✓ 9	31/1/2020	7th The Arc of Attrition 100 Mile	164,96	×2
✓ 10	6/11/2021	1st God’s Own Backyard Ultra	160,94	×2
✓ 11	26/10/2024	The Track 100	160,93	×2
✓ 12	28/7/2017	Lakeland 100 Mile	160,93	×2
✓ 13	29/4/2017	6th Thames Path 100	160,93	×2
✓ 14	23/2/2018	Transgrancanaria 125 km	125,00	×2
✓ 15	17/9/2016	The Cumbria Way Ultra	117,48	×2
✓ 16	2/7/2016	3rd Ultimate Trails Challenge 110 km	110,00	×1
✓ 17	27/6/2015	2nd Ultimate Trails Challenge 110 km	110,00	×1
✓ 18	14/9/2019	9th Hardmoors 60	99,78	×1
✓ 19	9/10/2021	Lakes in a day Ultra	80,47	×1
✓ 20	18/2/2017	Waterway 30	49,89	—