Karel Johannes Burger

ID 20796

Born : 1980 Cat. M45 Ultrarunner since 2005

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

4,8%

Rank quotient ?This runner's calculation uses 39 eligible race(s): Σ(rank − 1) = 10 976; Σ finishers = 229 386. 10 976 / 229 386 × 100 = 4.78%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed39

Km — ultra races2 285 km

Longest race90,0 km

98th Comrades Marathon - Down Run — 8/6/2025

Km per year (ultra races)

2022

2023

2024

146

2025

2026

Race types (share of distance)

Road97,7%

Trail2,3%

Wins & podiums (ultra)

🏆 Win1

🏆 Win M1

🏅 Top 31

🏅 Top 3 M1

Longest winning streak1

Current streak0

Records

50 km3h33'27 6 h60,39 km

HISTORY

39 race(s) · 9 split(s) nested

Date		Race	Perf.	Rk
2026
14.06	86km	99th Comrades Marathon - Up Run	7:19:52 h	580
2025
08.06	90km	98th Comrades Marathon - Down Run	7:18:16 h	507
06.04	56km	55th Two Oceans Marathon	4:51:24 h	1154
06.04	50km	55th Two Oceans Marathon - 50km Split	4:21:26 h	1286
2024
13.04	56km	54th Two Oceans Marathon	4:54:00 h	1242
13.04	50km	54th Two Oceans Marathon - 50km Split	4:26:37 h	1511
2019
05.05	6h	6th Wings for Life World Run	47.320 km	115
20.04	56km	50th Two Oceans Marathon	3:53:17 h	99
20.04	50km	50th Two Oceans Marathon - 50km Split	3:30:29 h	135
2018
06.05	6h	5th Wings for Life World Run	60.390 km	17
08.04	48km	Modern Athlete Irene Ultra	3:59:52 h	179
31.03	56km	49th Two Oceans Marathon	3:52:43 h	115
31.03	50km	49th Two Oceans Marathon - 50km Split	3:24:47 h	105
2017
08.07	52km	29th Rhodes 52 km Trail Run	4:44:50 h	1 🏆
04.06	87km	92nd Comrades Marathon - Up Run	8:16:50 h	1071
22.04	50km	31th Loskop Ultra Marathon 50km	3:43:01 h	121
15.04	56km	48th Two Oceans Marathon	3:55:35 h	104
15.04	50km	48th Two Oceans Marathon - 50km Split	3:30:45 h	111
18.03	50km	27th Om Die Dam 50km	3:33:27 h	62
2016
29.05	89km	91st Comrades Marathon - Down Run	8:42:55 h	2053
16.04	50km	30th Loskop Ultra Marathon 50km	3:42:12 h	101
26.03	56km	47th Two Oceans Marathon	3:47:36 h	68
26.03	50km	47th Two Oceans Marathon - 50km Split	3:24:04 h	77
12.03	50km	26th Om Die Dam 50km	4:04:34 h	116
2015
31.05	87km	90th Comrades Marathon - Up Run	7:08:27 h	192
18.04	50km	29th Loskop Ultra Marathon 50km	3:39:41 h	87
04.04	56km	46th Two Oceans Marathon	3:54:32 h	96
04.04	50km	46th Two Oceans Marathon - 50km Split	3:30:19 h	112
21.03	50km	25th Om Die Dam 50km	3:44:30 h	51
2014
01.06	89km	89th Comrades Marathon - Down Run	6:59:24 h	218
12.04	50km road race	28th Loskop Ultra Marathon 50km	3:41:49 h	115
2013
30.03	56km road race	44th Two Oceans Marathon	4:06:13 h	270
30.03	50km road race	44th Two Oceans Marathon - 50km Split (RSA)	3:35:02 h	240
2012
03.06	89km road race	87th Comrades Marathon - Down Run	6:32:27 h	96
21.04	50km road race	26th Loskop Ultra Marathon 50km	4:41:01 h	799
07.04	56km road race	43rd Two Oceans Marathon	3:53:44 h	159
07.04	50km road race	43rd Two Oceans Marathon - 50km Split (RSA)	3:29:55 h	198
17.03	50km	22nd Om Die Dam 50km	3:38:30 h	69
2011
16.04	50km	25th Loskop Ultra Marathon 50km	3:43:11 h	133
19.03	50km	21st Om Die Dam 50km	3:35:30 h	64
2010
17.04	50km	24th Loskop Ultra Marathon 50km	3:33:32 h	69
20.03	50km	20th Om Die Dam 50km	3:39:18 h	97
2008
19.04	50km	22th Loskop Ultra Marathon 50km	3:37:50 h	140
15.03	50km	18th Om Die Dam 50km	3:41:52 h	72
2007
17.03	50km	17th Om Die Dam 50km	3:37:49 h	103
2006
18.03	50km	16th Om Die Dam 50km	3:35:23 h	88
2005
23.04	50km	19th Loskop Ultra Marathon 50km	3:34:35 h	162
26.03	56km road race	36th Two Oceans Marathon	3:57:48 h	230

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	8/6/2025	98th Comrades Marathon - Down Run	90,00	×2
✓ 2	29/5/2016	91st Comrades Marathon - Down Run	89,00	×2
✓ 3	1/6/2014	89th Comrades Marathon - Down Run	89,00	×2
✓ 4	3/6/2012	87th Comrades Marathon - Down Run (RSA)	89,00	×2
✓ 5	4/6/2017	92nd Comrades Marathon - Up Run	87,00	×2
✓ 6	31/5/2015	90th Comrades Marathon - Up Run	87,00	×2
✓ 7	14/6/2026	99th Comrades Marathon - Up Run	86,00	×2
✓ 8	6/5/2018	5th Wings for Life World Run	60,39	×1
✓ 9	6/4/2025	55th Two Oceans Marathon	56,00	×1
✓ 10	13/4/2024	54th Two Oceans Marathon	56,00	×1
✓ 11	20/4/2019	50th Two Oceans Marathon	56,00	×1
✓ 12	31/3/2018	49th Two Oceans Marathon	56,00	×1
✓ 13	15/4/2017	48th Two Oceans Marathon	56,00	×1
✓ 14	26/3/2016	47th Two Oceans Marathon	56,00	×1
✓ 15	4/4/2015	46th Two Oceans Marathon	56,00	×1
✓ 16	30/3/2013	44th Two Oceans Marathon (RSA)	56,00	×1
✓ 17	7/4/2012	43rd Two Oceans Marathon (RSA)	56,00	×1
✓ 18	26/3/2005	36th Two Oceans Marathon (RSA)	56,00	×1
✓ 19	8/7/2017	29th Rhodes 52 km Trail Run	52,00	×1
✓ 20	22/4/2017	31th Loskop Ultra Marathon 50km	50,00	×1
✓ 21	18/3/2017	27th Om Die Dam 50km	50,00	×1
✓ 22	16/4/2016	30th Loskop Ultra Marathon 50km	50,00	×1
✓ 23	12/3/2016	26th Om Die Dam 50km	50,00	×1
✓ 24	18/4/2015	29th Loskop Ultra Marathon 50km	50,00	×1
✓ 25	21/3/2015	25th Om Die Dam 50km	50,00	×1
✓ 26	12/4/2014	28th Loskop Ultra Marathon 50km (RSA)	50,00	×1
✓ 27	21/4/2012	26th Loskop Ultra Marathon 50km (RSA)	50,00	×1
✓ 28	17/3/2012	22nd Om Die Dam 50km	50,00	×1
✓ 29	16/4/2011	25th Loskop Ultra Marathon 50km	50,00	×1
✓ 30	19/3/2011	21st Om Die Dam 50km	50,00	×1
✓ 31	17/4/2010	24th Loskop Ultra Marathon 50km	50,00	×1
✓ 32	20/3/2010	20th Om Die Dam 50km	50,00	×1
✓ 33	19/4/2008	22th Loskop Ultra Marathon 50km	50,00	×1
✓ 34	15/3/2008	18th Om Die Dam 50km	50,00	×1
✓ 35	17/3/2007	17th Om Die Dam 50km	50,00	×1
✓ 36	18/3/2006	16th Om Die Dam 50km	50,00	×1
✓ 37	23/4/2005	19th Loskop Ultra Marathon 50km	50,00	×1
✓ 38	8/4/2018	Modern Athlete Irene Ultra	48,00	×1
✓ 39	5/5/2019	6th Wings for Life World Run	47,32	×1