Spencer Millbery
ID 835601
Born : 1977 Cat. M45 Ultrarunner since 2015 GBR
41
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
57
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
4
Countries visited ?GBRUnited KingdomITAItalySUISwitzerlandUSAUnited States
63,0%
Rank quotient ?This runner's calculation uses 41 eligible race(s): Σ(rank − 1) = 9 127; Σ finishers = 14 498. 9 127 / 14 498 × 100 = 62.95%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed42
Km — ultra races4 769 km
> 100 km18
> 160 km16
> 200 km1
> 24h1
> 48h1
Longest race321,9 km
1st Winter Downs 200 — 13/12/2023

Km per year (ultra races)

539
6 races
2022
802
4 races
2023
491
3 races
2024
216
2 races
2025
80
1 race
2026

Race types (share of distance)

Road3,4%
Trail90,9%
Stage2,1%
Elim.3,7%

Records

50 km5h27'38100 km14h05'5550 mi9h55'16100 mi23h40'23Backyard26 loops

HISTORY

41 race(s)
DateRacePerf.Rk
2026
16.05 50mi GBR15th North Downs Way 50 Mile Race 11:44:11 h185
2025
09.08 103mi GBR15th North Downs Way 100 Mile Race 29:14:32 h123
15.03 31mi GBR3rd Hundred Hills 50km 6:45:23 h258
2024
12.10 100mi GBR13th Autumn 100 Mile Race 23:44:26 h85
26.07 105mi GBRLakeland 100 Mile 38:48:44 h358
26.04 100mi USA11th The Canyons Endurance 100 Miles Run 32:59:06 h149
2023
13.12 200mi GBR1st Winter Downs 200 3d 02:20:04 h21
29.08 145km ITA13ème Sur les Traces des Ducs de Savoie 42:58:45 h905
03.06 Backyard Ultra GBR6th Suffolk Backyard Ultra 174.356 km (26h)23
27.01 100mi GBR9th The Arc of Attrition 100 Mile 29:44:37 h98
2022
12.11 50mi GBR6th Wendover Woods 50 12:07:00 h86
17.09 50mi GBR7th Chiltern Wonderland 50 10:03:37 h67
25.08 56km SUI7ème Orsières-Champex-Chamonix 11:59:12 h805
29.07 100mi GBRLakeland 100 Mile 37:34:44 h226
21.05 50mi GBR11th North Downs Way 50 Mile Race 10:35:56 h104
09.04 50mi GBR10th South Downs Way 50 Mile Race 9:55:16 h160
2021
23.10 100mi GBRThe Track 100 24:47:07 h14
07.08 103mi GBR11th North Downs Way 100 Mile Race 28:12:47 h66
12.06 100mi GBR9th South Downs Way 100 Mile Race 27:37:11 h260
2020
25.10 50mi GBR8th South Downs Way 50 Mile Race 10:00:16 h126
31.01 102.5mi GBR7th The Arc of Attrition 100 Mile 34:14:26 h103
2019
16.11 50mi GBR4th Wendover Woods 50 12:53:47 h134
12.10 100mi GBR8th Autumn 100 Mile Race 24:36:32 h88
30.08 101km ITA14ème Courmayeur-Champex-Chamonix 25:46:10 h1381
04.05 100mi GBR8th Thames Path 100 23:40:23 h115
2018
17.11 50mi GBR3rd Wendover Woods 50 13:08:42 h144
15.09 50mi GBR3rd Chiltern Wonderland 50 Mile Race 11:19:30 h137
07.07 50km GBRSerpent Trail Race 50km 7:09:13 h62
19.05 50mi GBR8th North Downs Way 50 Mile Race 11:54:10 h188
07.04 50mi GBR6th South Downs Way 50 Mile Race 11:00:05 h272
13.01 45mi GBR10th GB Ultra Country to Capital 9:09:45 h224
2017
17.12 50km GBRPortsmouth Coastal Waterside 50K 5:27:38 h239
21.10 100mi GBR6th Autumn 100 Mile Race 26:16:19 h130
15.07 100km GBR5th Race to the Stones 100 km Ultramarathon 14:05:55 h312
29.04 100mi GBR6th Thames Path 100 26:37:01 h168
08.04 50mi GBR5th South Downs Way 50 Mile Race 11:16:20 h294
14.01 45mi GBRGB Ultra Country to Capital 8:32:13 h224
2016
16.07 100km GBR4th Race to the Stones 100 km Ultramarathon 16:04:39 h401
25.06 53.5mi GBRRace to the King Ultra Marathon 12:46:46 h208
29.05 50km GBR3rd Weald Challenge 6:55:24 h99
2015
11.07 100km/2stages GBR3rd Race to the Stones 100 km Stage Run 15:39:28 h126