Douglas Black

Ultrarunner since 2000

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 ?

Australia

62,4%

Rank quotient ?This runner's calculation uses 5 eligible race(s): Σ(rank − 1) = 128; Σ finishers = 205. 128 / 205 × 100 = 62.44%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed5

Km — ultra races336 km

> 100 km1

> 24h1

Longest race111,7 km

Gold Coast 24 Hours Track Race — 23/8/2003

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Road48,1%

Trail51,9%

Records

50 km4h28'18 24 h111,65 km

HISTORY

5 race(s) · 2 split(s) nested

Date		Race	Perf.	Rk
2003
23.08	24h	Gold Coast 24 Hours Track Race	111.653 km	12
23.08	12h	Gold Coast 24 Hours Track Race - 12h Split	74.800 km	9
23.08	100km	Gold Coast 24 Hours Track Race - 100km Split	20:28:30 h	12
2002
08.12	50km	Kurrawa to Duranbah and Return - 50 km	4:28:18 h	9
2001
29.04	84.4km	1st Lest We Forget Ultra Marathon	10:29:21 h	68
18.03	45km	Great Ocean Run 45 km	5:24:10 h	26
2000
26.03	45km	Great Ocean Run 45 km	5:38:24 h	18

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Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	23/8/2003	Gold Coast 24 Hours Track Race	111,65	×6
✓ 2	29/4/2001	1st Lest We Forget Ultra Marathon	84,40	×5
✓ 3	8/12/2002	Kurrawa to Duranbah and Return - 50 km	50,00	×3
✓ 4	18/3/2001	Great Ocean Run 45 km	45,00	×2
✓ 5	26/3/2000	Great Ocean Run 45 km	45,00	×2