Robert Buck

Born : 1950 Cat. M75 Ultrarunner since 1976

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 ?

South Africa

37,4%

Rank quotient ?This runner's calculation uses 20 eligible race(s): Σ(rank − 1) = 35 536; Σ finishers = 95 122. 35 536 / 95 122 × 100 = 37.36%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed20

Km — ultra races1 120 km

Longest race56,0 km

35th Two Oceans Marathon (RSA) — 10/4/2004

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Road100,0%

Records

No record for a classic ultra format

HISTORY

20 race(s)

Date		Race	Perf.	Rk
2004
10.04	56km road race	35th Two Oceans Marathon	5:33:44 h	3507
1996
06.04	56km	27th Two Oceans Marathon	4:56:33 h	1971
1995
15.04	56km	26th Two Oceans Marathon	4:43:19 h	1422
1994
02.04	56km	25th Two Oceans Marathon	4:55:48 h	2146
1993
10.04	56km	24th Two Oceans Marathon	5:15:14 h	3590
1992
18.04	56km	23rd Two Oceans Marathon	4:51:06 h	1898
1991
30.03	56km	22nd Two Oceans Marathon	4:47:30 h	1675
1990
14.04	56km	21st Two Oceans Marathon	4:47:43 h	1943
1989
25.03	56km	20th Two Oceans Marathon	4:51:26 h	1520
1988
02.04	56km	19th Two Oceans Marathon	5:36:22 h	4173
1987
18.04	56km	18th Two Oceans Marathon	5:05:24 h	2323
1986
29.03	56km	17th Two Oceans Marathon	4:49:47 h	1691
1985
06.04	56km	16th Two Oceans Marathon	4:58:56 h	1898
1984
21.04	56km	15th Two Oceans Marathon	4:31:53 h	852
1983
02.04	56km	14th Two Oceans Marathon	4:51:37 h	1124
1982
10.04	56km	13th Two Oceans Marathon	4:50:38 h	990
1981
18.04	56km	12th Two Oceans Marathon	5:21:15 h	1228
1980
05.04	56km	11th Two Oceans Marathon	4:38:23 h	532
1979
14.04	56km	10th Two Oceans Marathon	5:23:14 h	800
1976
17.04	56km	7th Two Oceans Marathon	5:15:31 h	273

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Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	10/4/2004	35th Two Oceans Marathon (RSA)	56,00	×2
✓ 2	6/4/1996	27th Two Oceans Marathon	56,00	×2
✓ 3	15/4/1995	26th Two Oceans Marathon	56,00	×2
✓ 4	2/4/1994	25th Two Oceans Marathon	56,00	×2
✓ 5	10/4/1993	24th Two Oceans Marathon	56,00	×2
✓ 6	18/4/1992	23rd Two Oceans Marathon	56,00	×2
✓ 7	30/3/1991	22nd Two Oceans Marathon	56,00	×2
✓ 8	14/4/1990	21st Two Oceans Marathon	56,00	×2
✓ 9	25/3/1989	20th Two Oceans Marathon	56,00	×2
✓ 10	2/4/1988	19th Two Oceans Marathon	56,00	×2
✓ 11	18/4/1987	18th Two Oceans Marathon	56,00	×2
✓ 12	29/3/1986	17th Two Oceans Marathon	56,00	×2
✓ 13	6/4/1985	16th Two Oceans Marathon	56,00	×2
✓ 14	21/4/1984	15th Two Oceans Marathon	56,00	×2
✓ 15	2/4/1983	14th Two Oceans Marathon	56,00	×2
✓ 16	10/4/1982	13th Two Oceans Marathon	56,00	×2
✓ 17	18/4/1981	12th Two Oceans Marathon	56,00	×2
✓ 18	5/4/1980	11th Two Oceans Marathon	56,00	×2
✓ 19	14/4/1979	10th Two Oceans Marathon	56,00	×2
✓ 20	17/4/1976	7th Two Oceans Marathon	56,00	×2