Hell of a ultra runner. You boy Park is very well know and very legit! Distances below are in Km's.
All-Time Performances- 24 Hour Outdoor Track
World Men
303.306 ( 1) Yiannis Kouros (AUS) 13 Feb 1956 04 Oct 1997 Adelaide AUS
295.030 ( 1) Yiannis Kouros- 2 13 Feb 1956 01 Mar 1997 Canberra AUS
294.104 ( 1) Yiannis Kouros- 3 13 Feb 1956 13 Apr 1996 Coberg AUS
285.362 ( 1) Yiannis Kouros- 4 13 Feb 1956 06 May 1995 Sugeres FRA
285.002x ( 1) Yiannis Kouros- 5 13 Feb 1956 03 May 1996 Sugeres FRA
284.070 ( 1) Yiannis Kouros- 6 13 Feb 1956 02 Mar 2002 Soochow TPE
283.600x ( 1) Yiannis Kouros- 7 13 Feb 1956 15 Mar 1985 Montauban FRA
282.981 ( 1) Yiannis Kouros- 8 13 Feb 1956 08 Apr 1995 Coberg AUS
280.469 ( 1) Yiannis Kouros- 9 13 Feb 1956 04 Aug 1990 Melbourne AUS
275.982 ( 1) Anatoliy Kruglikov (RUS) 09 Oct 1957 24 Jun 1995 Podolsk RUS
10
275.828 ( 1) Yiannis Kouros- 10 13 Feb 1956 22 Sep 2001 Verona ITA
275.357 ( 1) Yiannis Kouros- 11 13 Feb 1956 09 May 1997 Surgeres FRA
274.480 ( 1) Dave Dowdle (GBR) 19 Nov 1954 22 May 1982 Gloucester ENG
273.828 ( 1) Valmir Nunes (BRA) 16 Jan 1964 10 Mar 2003 Soochow TPE
272.624 ( 1) Jean-Gilles Boussiquet (FRA) 26 Jul 1944 02 May 1981 Lausanne SUI
272.619 ( 2) Eduard Khirov (RUS) 17 Jul 1961 24 Jun 1995 Podolsk RUS
271.750 ( 1) Masayuki Otaki (JPN) 05 Jun 1965 27 Mar 2004 Soochow TPE
271.200 ( 1) Anatoliy Kruglikov- 2 09 Oct 1957 27 Aug 1994 Podolsk RUS
270.337 ( 2) Lubomir Hrmo (SVK) 25 Feb 1961 22 Sep 2001 Verona ITA
270.224 ( 1) Yiannis Kouros- 12 13 Feb 1956 28 May 2004 Surgeres FRA
20
270.200 ( 1) Valmir Nunes- 2 16 Jan 1964 25 May 2002 Campinas BRA
268.975 ( 2) Eduard Khirov- 2 17 Jul 1961 27 Aug 1994 Podolsk RUS
268.251 ( 1) Donald Ritchie (SCO) 06 Jul 1944 26 Oct 1991 Hendon ENG
267.510 ( 1) Yiannis Kouros- 13 13 Feb 1956 02 May 2003 Surgeres FRA
267.088 ( 3) Ivan Labutin (RUS) 20 Mar 1959 24 Jun 1995 Podolsk RUS
266.275 ( 2) Ryoichi Sekiya (JPN) 27 Dec 1956 02 Mar 2002 Soochow TPE
266.180 ( 1) Yiannis Kouros- 14 13 Feb 1956 13 Apr 1997 Coburg AUS
265.932 ( 1) Rae Clark (CA/USA) 07 Feb 1952 28 Sep 1990 Portland OR USA
265.683 ( 1) Yiannis Kouros- 15 13 Feb 1956 23 Sep 2000 Verona ITA
264.410 ( 1) Ryoichi Sekiya- 2 27 Dec 1956 04 Apr 2005 Taipei TPE
30
264.400 ( 3) Mikhail Eremisov (RUS) 1961 27 Aug 1994 Podolsk RUS
264.108 ( 1) Jean-Gilles Boussiquet- 2 26 Jul 1944 11 Aug 1980 Blackburn ENG
263.466 ( 1) Mark Pickard (ENG) 08 Mar 1960 10 Oct 1981 Hendon ENG
262.790 ( 1) Valeriy Goubar (UKR) 05 Jul 1948 Oct 1988 Odessa UKR
262.668 ( 1) Yiannis Kouros- 16 13 Feb 1956 02 Jul 1984 New York NY USA
262.640 ( 1) Rune Larsson (SWE) 11 May 1956 12 Jul 1986 Honefoss NOR
262.324 ( 1) Yiannis Kouros- 17 13 Feb 1956 22 Sep 1989 Verona ITA
262.324 ( 1) Yiannis Kouros- 18 13 Feb 1956 25 Sep 1999 Verona ITA
262.238 ( 1) Seiji Arita (JPN) 25 Jan 1957 09 Oct 1994 Arcueil FRA
261.640 ( 2) Ryoichi Sekiya- 3 27 Dec 1956 10 Mar 2003 Soochow TPE
40
261.478 ( 1) Yiannis Kouros- 19 13 Feb 1956 03 May 2002 Sugeres FRA
261.204 ( 1) Park Barner (PA/USA) 13 Jan 1944 01 Jun 1979 Huntington Beach CA USA