Updated 10/12/2020, this is a reference of best times recorded for the following distances per athlete.

This is a listing of the all-time best performances by North American residents. We list these as best times, not records, because many of these times have not been officially sanctioned or certified by USATF or any governing body. Nonetheless, the times are believed to be accurate. A ‘t’ next to the time indicates that the mark was set in a trail race, where the distance is believed to be accurate.

24 Hours

Men

Name	Age	State	Year	Result
Mike Morton	41	FL	2012	172.457 miles
Oliver Leblond	47	VA	2019	171.178
Jon Olsen	38	CA	2013	167.568
Scott Jurek	36	WA	2010	165.705
Rae Clark	38	CA	1990	165.243
Jacob Jackson	42	CA	2019	165.067
Pete Kostelnick	28	NE	2015	163.54
John Dennis	32	MD	2013	163.255
Mark Godale	29	OH	1998	162.46
Park Barner	35	PA	1979	162.305
(Worlds best) Yiannis Kouros	41	GRE/AUS	1997	188.589

Women

Name	Age	State	Year	Result
Camille Herron	36	OK	2019	167.842 miles
Courtney Dauwalter	32	CO	2017	159.319
Katalin Nagy	38	FL	2017	155.73
Gina Slaby	36	WA	2017	154.279
Pam Smith	45	OR	2019	153.037
Sabrina Little	26	TX	2013	152.030
Connie Gardner	49	OH	2012	149.368
Traci Falbo	43	IN	2015	148.967
Micah Morgan	46	AL	2019	148.681
Marisa Lizak	40	CA	2019	148.08
(Worlds best) Camille Herron	36	OK	2019	167.842

100 Miles

Men

Name	Age	State	Year	Result
Zach Bitter	33	WI	2019	11:19:18
Jon Olsen	39	CA	2013	11:59:28
Andy Jones	35	ON	1997	12:05:43
Rae Clark	37	CA	1989	12:12:19
Patrick Reagan	33	GA	2019	12:21:43t
Bernd Heinrich	44	ME	1984	12:27:01
Mark Hammond	34	UT	2019	12:35:53
Ian Sharman	30	CA (GBR)	2011	12:44:33t
Alfonso Anzaldo Meneses		MEX	1987	12:46:20
Mike Bialick	34	MN	2015	12:52:53
(Worlds best) Zach Bitter	33	WI	2019	11:19:18

Women

Name	Age	State	Year	Result
Camille Herron	35	OK	2017	12:42:40t
Gina Slaby	35	WA	2016	13:45:49
Ann Trason	30	CA	1991	13:47:41
Pam Smith	41	OR	2016	14:09:43
Nicole Studer	32	TX	2015	14:22:18t
Katalin Nagy	35	FL	2015	14:41:59
Alyson Venti	31	FL	2014	14:42:45
Traci Falbo	43	IN	2014	14:45:26t
Maggie Guterl	36	PA	2016	14:47:02t
Megan Alvarado	29	VA	2018	14:50:28
(Worlds best) Camille Herron	35	OK	2017	12:42:40

100 Kilometers

Men

Name	Age	State	Year	Result
Max King	34	OR	2014	6:27:43
Tom Johnson	36	CA	1995	6:30:11
Geoffrey Burns	25	MI	2016	6:30:37
Erik Seedhouse	27	ON (GBR)	1992	6:33:03
Dan Held	34	WI	2000	6:33:12
Pat Reagan	32	GA	2019	6:33:50
Andy Jones	30	ON	1991	6:33:57
Richard Chouinard	28	QC	1979	6:36:57
Allan Kirik	36	NY	1980	6:37:54
Bernd Heinrich	41	VT	1981	6:38:21
(Worlds best) Nao Kazami	35	JPN	2018	6:09:14

Women

Name	Age	State	Year	Result
Ann Trason	35	CA	1996	7:00:48
Camille Herron	33	OK	2015	7:08:35
Sarah Bard	31	MA	2015	7:29:01
Donna Perkins	35	WI	1999	7:33:46
Kami Semick	41	OR	2008	7:33:58
Amy Sproston	38	OR	2012	7:34:08
Meghan Arbogast	51	OR	2012	7:41:52
Pam Smith	37	OR	2012	7:43:04
Chrissy Duryea-Ferguson	35	AR	1995	7:44:23
Devon Crosby-Helms	28	CA	2011	7:46:34
(Worlds best) Tomoe Abe	28	JPN	2000	6:33:11

50 Miles

Men

Name	Age	State	Year	Result
Jim Walmsley	29	AZ	2019	4:50:08
Barney Klecker	29	MN	1980	4:51:25
Andy Jones	28	ON	1990	4:54:59
Allan Kirik	36	NY	1980	4:56:03
Erik Seedhouse	25	ON (GBR)	1989	5:04:18
Pat Reagan	32	GA	2019	5:08:21
Don Paul	30	CA	1980	5:09:58
Stefan Fekner	37	AB	1989	5:10:09
Bernd Heinrich	41	VT	1981	5:10:13
Bill DeVoe	30	NY	1981	5:12:35
(Worlds best) Jim Walmsley	29	AZ	2019	4:50:08

Women

Name	Age	State	Year	Result
Camille Herron	33	OK	2015	5:38:41
Ann Trason	31	CA	1991	5:40:18
Caroline Boller	41	CA	2016	5:48:01t
Donna Perkins	35	WI	1994	5:55:41
Larisa Dannis	27	CA	2014	5:59:11
Marcy Schwam	29	MA	1982	5:59:26
Leah Thorvilson	33	AR	2012	6:00:31
Kim Moody	30	ME	1986	6:01:53
Sue Ellen Trapp	45	FL	1991	6:03:38
Sabrina Little	32	KY	2019	6:08:20
(Worlds best) Camille Herron	33	OK	2015	5:38:41

50 Kilometer

Men

Name	Age	State	Year	Result
Josh Cox	35	CA	2011	2:43:45
Tyler Andrews	27	VA	2018	2:46:06
Tyler Jermann	24	AZ	2017	2:48:56
Jim Walmsley	30	AZ	2020	2:49:03t
Zachary Ornelas	27	MI	2019	2:50:02
Chuck Smead	25	CA	1976	2:50:46
Don Paul	32	CA	1982	2:50:55
Austin Bogina	25	KS	2019	2:50:55
Kyle Masterson	26	CO	2019	2:51:09
Craig Hunt	28	AZ	2019	2:51:34
Alex Tilson	32	CA	2002	2:51:48
(Worlds best) Thompson Magawana		ZAF	1988	2:43:38

Women

Name	Age	State	Year	Result
Janis Klecker	23	MN	1983	3:13:51
Emily Harrison	28	AZ	2014	3:15:01
Courtney Olsen	32	TX	2019	3:19:23
Elizabeth Northern	32	TX	2019	3:19:24
Jodie Schoppmann	26	NY	2011	3:20:12
Camille Herron	33	OK	2015	3:20:58
Ann Trason	34	CA	1995	3:20:24
Linda Edgar	28	WA	1983	3:21:27
Caroline Boller	41	CA	2016	3:22:51
Devon (Crosby-Helms) Yanko	29	CA	2012	3:23:11
(Worlds best) Aly Dixon	25	GBR	2019	3:07:20

t = mark set in a trail race. Distance believed to be accurate.

3100 Miles

Edward Kelley, 41, CA, 1998	47 d + 05:39:58
Trishul Cherns, 42, NY (CAN), 1999	50 d + 03:36:01
Arpan DeAngelo, 52, NY, 2004	51 d + 10:04:37
WORLDS BEST:
Ashprihanal Aalto, 44, FIN, 2015	40 d + 09:06:21
WOMEN
Suprabha Beckjord, 42, DC, 1998	49 d + 14:30:54
Yolanda Holder, 59 , CA, 2017	51 d +17:00:13
WORLDS BEST:
Kaneenika Janakova, 47, SLO 2017	48 d +14:24:10

1000 Miles

Men

Name	Age	State	Year	Result
Stu Mittleman	34	NY	1986	11 d + 20:36:50
Al Howie	47	BC (GBR)	1991	12 d + 01:42:52
Marty Sprengelmeyer	45	IA	1991	13 d + 07:19:41
Trishul Cherns	29	NY (CAN)	1986	13 d + 07:50:45
Tom Possert	28	OH	1991	13 d + 14:02:52
Michel Careau	47	QC	1988	13 d + 21:31:53
John Wallis	52	MI	1989	14 d + 09:45:04
Don Winkley	59	TX	1997	14 d + 10:56:46
Ronnie Wong	44	MD	1991	14 d + 12:48:25
Charlie Eidel	44	NY	1991	14 d + 16:52:41
(Worlds best) Yiannis Kouros	32	GRE	1998	10 d + 10:30:35

Women

Name	Age	State	Year	Result
Antana Locs	32	ON	1991	13 d + 23:18:32
Suprabha Beckjord	38	DC	1994	14 d + 08:56:57
Silvia Andonie	38	MEX	1994	14 d + 18:52:38
Wendy Winter (née) Dorn	28	BC	1995	15 d + 22:39:35
(Worlds best) Sandy Barwick	42	NZL	1991	12 d + 14:38:40

6 Days

Men

Name	Age	State	Year	Result
Joe Fejes	49	GA	2015	606.243 miles
Stu Mittleman	33	NY	1985	577.625 miles
George Gardiner	40	RI	1984	554.041
David Johnston	44	AK	2014	551.148
Brian Purcell	33	CA	1990	543
David Luljak	42	MD	1998	541
Michel Careau	53	QC	1993	539.96
Trishul Cherns	29	NY (CAN)	1986	538.107
Bob Hearn	53	CA	2019	530.1587
Marty Sprengelmeyer	41	IA	1988	516.545
(Worlds best) Yiannis Kouros	31	GRE/AUS	1987	658.653

Women

Name	Age	State	Year	Result
Dipali Cunningham	50	NY (AUS/GBR)	2009	514.83 miles
Pam Reed	48	AZ	2009	491.74
Donna Hudson	40	NY	1987	487.901
Mary Hanudel	27	OH	1987	486.6
Suprabha Beckjord	35	DC	1991	459
Lorna Richey	25	OH	1984	456.335
Pippa Davis	48	NY	1995	454
Amy Mower	50	VA	2018	453.51
Antana Locs	32	ON	1991	452
Liz Bauer	55	GA	2014	425.33
(Worlds best) Sandy Barwick	41	NZL	1991	548.317

48 Hours

Men

Name	Age	State	Year	Result
Olivier Leblond	45	VA	2017	262.181 miles
Philip McCarthy	42	NY	2011	257.34
John Geesler	44	NY	2003	248.55
Roy Pirrung	48	WI	1997	243.431
Bob Hearn	55	CA	2020	240.3257
Brian Purcell	33	CA	1989	240
Joe Fejes	46	GA	2015	236.01
Scott Demaree	38	TX	1989	230.4
David Luljak	43	MD	1999	229
Jack Christian	38	TX	1991	227.332
(Worlds best) Yiannis Kouros	40	GRE/AUS	1996	294.403

Women

Name	Age	State	Year	Result
Marisa Lizak	44	CA	2020	243.555 miles
Traci Falbo	42	IN	2014	242.35
Sue Ellen Trapp	51	FL	1997	234.811
Pam Reed	43	AZ	2004	220.568
Susan Olsen	36	MN	1994	216.82
Liz Bauer	51	GA	2010	205.01
Amy Mower	50	VA	2019	202
Sandy Powell	51	VA	2008	201.08
Silvia Andonie	33	MEX	1988	196
Bev Williams	36	CAN	1991	191.835
(Worlds best) Patrycja Bereznowska	41	POL	2018	249.17