Ronald Davies

Born : 1962 Cat. M60 Ultrarunner since 2020

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

41,6%

Rank quotient ?This runner's calculation uses 17 eligible race(s): Σ(rank − 1) = 1 693; Σ finishers = 4 073. 1 693 / 4 073 × 100 = 41.57%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed17

Km — ultra races1 766 km

> 100 km7

> 160 km6

Longest race165,8 km

15th North Downs Way 100 Mile Race — 9/8/2025

Km per year (ultra races)

327

2022

166

2023

211

2024

377

2025

291

2026

Race types (share of distance)

Trail100,0%

Records

50 km3h55'38 50 mi9h12'53 100 mi23h27'35

HISTORY

17 race(s)

Date		Race	Perf.	Rk
2026
02.05	100mi	14th Thames Path 100	25:26:54 h	86
11.04	50mi	14th South Downs Way 50 Mile Race	10:02:04 h	181
14.03	31mi	4th Hundred Hills 50km	6:31:48 h	205
2025
20.09	50mi	10th Chiltern Wonderland 50	11:06:23 h	159
09.08	103mi	15th North Downs Way 100 Mile Race	26:24:58 h	65
12.04	50mi	13th South Downs Way 50 Mile Race	10:20:20 h	162
29.03	50km	5th London Lea Valley 50 km	4:36:26 h	60
2024
08.06	100mi	12th South Downs Way 100 Mile Race	25:35:55 h	222
23.03	50km	4th London Lea Valley 50 km	4:24:38 h	41
2023
05.08	103mi	13th North Downs Way 100 Mile Race	25:59:10 h	66
2022
06.08	103mi	12th North Downs Way 100 Mile Race	25:36:33 h	65
07.05	100mi	11th Thames Path 100	23:27:35 h	100
2021
18.09	50mi	6th Chiltern Wonderland 50	10:10:59 h	55
19.06	50km	1st Lea Valley 50 km	3:55:38 h	20
22.05	50mi	10th North Downs Way 50 Mile Race	10:01:37 h	96
17.04	50mi	9th South Downs Way 50 Mile Race	9:12:53 h	86
2020
15.08	103km	8 Stour Valley Path 100km Ultra Run	12:26:39 h	41

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	9/8/2025	15th North Downs Way 100 Mile Race	165,76	×4
✓ 2	5/8/2023	13th North Downs Way 100 Mile Race	165,76	×4
✓ 3	6/8/2022	12th North Downs Way 100 Mile Race	165,76	×4
✓ 4	2/5/2026	14th Thames Path 100	160,93	×4
✓ 5	8/6/2024	12th South Downs Way 100 Mile Race	160,93	×4
✓ 6	7/5/2022	11th Thames Path 100	160,93	×4
✓ 7	15/8/2020	8 Stour Valley Path 100km Ultra Run	103,00	×2
✓ 8	11/4/2026	14th South Downs Way 50 Mile Race	80,47	×2
✓ 9	20/9/2025	10th Chiltern Wonderland 50	80,47	×2
✓ 10	12/4/2025	13th South Downs Way 50 Mile Race	80,47	×2
✓ 11	18/9/2021	6th Chiltern Wonderland 50	80,47	×2
✓ 12	22/5/2021	10th North Downs Way 50 Mile Race	80,47	×2
✓ 13	17/4/2021	9th South Downs Way 50 Mile Race	80,47	×2
✓ 14	29/3/2025	5th London Lea Valley 50 km	50,00	×1
✓ 15	23/3/2024	4th London Lea Valley 50 km	50,00	×1
✓ 16	19/6/2021	1st Lea Valley 50 km	50,00	×1
✓ 17	14/3/2026	4th Hundred Hills 50km	49,89	×1