David Janosko
Born : 1958 Cat. M65 Ultrarunner since 1983 USA
80
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
80
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
4
Countries visited ?CANCanadaGBRUnited KingdomMEXMexicoUSAUnited States
73,2%
Rank quotient ?This runner's calculation uses 212 eligible race(s): Σ(rank − 1) = 33 514; Σ finishers = 45 804. 33 514 / 45 804 × 100 = 73.17%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed212
Km — ultra races15 081 km
> 100 km16
> 160 km8
> 24h3
Longest race160,9 km

Km per year (ultra races)

686
11 races
2022
620
9 races
2023
456
7 races
2024
472
7 races
2025
287
5 races
2026

Race types (share of distance)

Road1,3%
Trail98,4%
Elim.0,4%

HISTORY

214 race(s)
DateRacePerf.Rk
2026
28.06 50km USA32nd Buckeye Trail 50k 8:48:28 h166
02.05 24h USA14th O24 - Outrun 24h Trail Run 72.597 km37
28.03 50km USA16th Kanawha Trace Trail Runs 8:35:08 h44
07.02 40mi USA34th Uwharrie Mountain Run 12:19:03 h68
10.01 50km USA17th Frozen Sasquatch 50 km Trail Race 8:35:40 h37
2025
22.11 50mi USA63rd JFK 50 Mile 12:26:51 h1008
01.11 50km USA10th Conquer The Castle 50K Trail Race 6:55:43 h58
11.10 50km USA8th Shawnee 50 km Trail Run 9:36:31 h30
28.06 50km USA31st Buckeye Trail 50k 9:12:44 h151
07.06 50mi USA10th Eagle Up Ultra 50 Mile 10:39:18 h13
18.05 50mi USA4th Highball to Thurmond Ultra 50 Miles 12:25:26 h8
01.03 50mi MEX17th Ultra Caballo Blanco Copper Canyon Ultra 15:32:34 h134
2024
23.11 50mi USA62nd JFK 50 Mile 12:26:24 h1021
02.11 50km USA9th Conquer The Castle 50K Trail Race 6:51:23 h67
06.07 50km USA30th Buckeye Trail 50k 8:46:03 h171
19.05 50mi USA3rd Highball to Thurmond Ultra 50 Miles 12:54:50 h12
09.03 50mi USA10th Antelope Canyon 50 Mile Race 14:09:14 h219
03.02 40mi USA32nd Uwharrie Mountain Run 12:16:47 h69
06.01 50km USA15th Frozen Sasquatch 50 km Trail Race 8:35:44 h39
2023
18.11 50mi USA61st JFK 50 Mile 12:14:54 h815
07.10 50mi USA6th Shawnee 50 Mile Trail Run 16:28:17 h35
09.09 50mi USA11th Virgil Crest 50 Mile Ultra 17:29:30 h13
05.08 Backyard Ultra USA5th Bob's Big Timber Backyard Ultra 53.648 km (8h)55
08.07 50km USA29th Buckeye Trail 50k 7:46:31 h128
03.06 50mi USA8th Eagle Up Ultra 50 Mile 11:28:35 h20
21.05 50mi USA2nd Highball to Thurmond Ultra 50 Miles 12:27:41 h22
04.02 40mi USA31st Uwharrie Mountain Run 11:58:56 h75
07.01 50km USA14th Frozen Sasquatch 50 km Trail Race 8:27:22 h35
2022
19.11 50mi USA60th JFK 50 Mile 11:53:51 h749
05.11 50km USA7th Conquer The Castle 50K Trail Race 6:36:55 h37
15.10 50km USA14th Oil Creek 50 km Trail Run 8:43:09 h87
17.09 50mi USA16th Run Rabbit Run 50 Mile Endurance Run 15:45:43 h148
27.08 50km USA11th Moebius Green Monster Trail 50K 7:23:30 h47
09.07 50km USA28th Buckeye Trail 50k 8:14:42 h137
04.06 50mi USA7th Eagle Up Ultra 50 Mile 10:23:54 h14
07.05 50km GBR4th Chiltern Ridge Ultra Trail 6:51:43 h145
09.04 50mi USA28th Bull Run Run 50 Miler 12:29:59 h122
05.03 31mi GBRHumanity Direct Amersham Ultra 6:51:49 h124
05.02 40mi USA30th Uwharrie Mountain Run 11:46:59 h52
2021
20.11 81.3km USA59th JFK 50 Mile 11:47:59 h744
02.10 50km USA6th Conquer The Castle 50K Trail Race 6:52:06 h34
17.09 50mi USA15th Run Rabbit Run 50 Mile Endurance Run 14:56:20 h134
28.08 50km USA10th Moebius Green Monster Trail 50K 7:55:47 h23
07.08 50km USA11th Kanawha Trace Trail Runs 8:29:58 h41
10.07 50km USA27th Buckeye Trail 50k 8:22:47 h113
05.06 50mi USA6th Eagle Up Ultra 50 Mile 11:53:44 h25
2019
23.11 50mi USA57th JFK 50 Mile 11:58:52 h701
28.09 50km USA4th Conquer The Castle 50K Trail Race 7:47:32 h35
03.08 52.5km GBRRound Reading Ultra Marathon 50km 6:33:53 h100
30.06 50km USA25th Buckeye Trail 50k 8:14:07 h81
08.06 50mi USA4th Eagle Up Ultra 50 Mile 10:34:39 h17
11.05 50km USA5th CLE Trail 50K 6:05:49 h21
13.04 50mi USA27th Bull Run Run 50 Miler 12:54:19 h155
16.03 50km USA7th Buzzard Day 50 km Trail Race 7:32:16 h48
23.02 50km USA4th Olde Girdled Grit 50K 6:36:59 h41
2018
17.11 50mi USA56th JFK 50 Mile 11:51:31 h536
22.09 50km USA3rd Doan Creek Trail Run 9:27:48 h30
07.07 50km USA24th Buckeye Trail 50k 8:03:37 h102
09.06 50mi USA3rd Eagle Up Ultra 50 Mile 10:02:47 h9
12.05 50km USA4th CLE Trail 50K 7:07:29 h21
07.04 50mi USA26th Bull Run Run 50 Miler 12:42:30 h224
24.02 50km USA3rd Olde Girdled Grit 50K 6:40:19 h30
2017
18.11 50mi USA55th JFK 50 Mile 12:04:37 h626
09.09 50km USA8th Javelina Jangover Night Run 50K 6:49:38 h24
08.07 50km USA23th Buckeye Trail 50k 7:33:19 h92
13.05 50km USA3rd CLE Trail 50K 7:04:33 h27
08.04 50mi USA25th Bull Run Run 50 Miler 12:15:32 h249
11.03 50km USA5th Buzzard Day 50 km Trail Race 8:12:49 h44
26.02 50km USA2nd Olde Girdled Grit 50K 6:34:41 h39
04.02 40mi USA25th Uwharrie Mountain Run 11:38:35 h82
2016
10.12 50km USA7th Bigfoot 50K Trail Race 7:37:49 h103
19.11 50mi USA54th JFK 50 Mile 11:39:04 h576
08.10 50km USA8th Oil Creek 50 km Trail Run 8:26:50 h72
24.09 50km USA22nd Germantown 50k 7:11:21 h33
09.07 50km USA22th Buckeye Trail 50k 8:55:39 h141
11.06 70.5mi USA37th Laurel Highlands 70 Mile Ultra 21:32:29 h80
09.04 50mi USA24th Bull Run Run 50 Miler 12:27:53 h226
02.04 50km USA9th Fools 50K Trail Run 6:43:47 h73
05.03 50km USA9th Green Jewel 50K 5:40:27 h61
20.02 50km USA1st Olde Girdled Grit 50K 7:06:04 h45
23.01 50km USA5th Run for Regis 50K 7:04:42 h30
2015
21.11 50mi USA53rd JFK 50 Mile 10:43:01 h495
26.09 50km USA21st Germantown 50k 7:14:50 h36
09.05 50km USA1st CLE Trail 50K 7:29:43 h19
11.04 50mi USA23rd Bull Run Run 50 Miler 12:48:03 h275
07.03 50km USA8th Green Jewel 50K 6:19:56 h70
2014
22.11 50mi USA52nd JFK 50 Mile 11:31:03 h678
13.09 50mi USA8th Run Rabbit Run 50 mile Endurance Run 14:46:03 h132
12.07 50km USA20th Buckeye Trail 50k 8:29:55 h129
14.06 70.5mi USA35th Laurel Highlands 70 Mile Ultra 21:31:03 h102
17.05 50km USAPlayin’ Possum 50K Trail Run 7:03:39 h74
12.04 50mi USA22nd Bull Run Run 50 Miler 12:47:05 h263
08.03 50km USA7th Green Jewel 50K 6:05:26 h93
2013
23.11 50mi USA51st JFK 50 Mile 11:21:00 h676
13.07 50km USA19th Buckeye Trail 50k 7:55:59 h118
08.06 50mi USA1st Cayuga Trails 50 Mile Race 13:39:00 h126
13.04 50mi USA21st Bull Run Run 50 Miler 12:10:54 h265
07.04 50km USA6th Fools 50K Trail Run 7:15:54 h95
23.03 50km USA1st Haulin' in the Holler 50k Trail race 8:02:42 h14
03.02 50km USA6th Green Jewel 50K 6:04:14 h107
2012
17.11 50mi USA50th JFK 50 Mile 10:43:51 h592
15.09 50mi USA6th Run Rabbit Run 50 Mile UltraMarathon 13:57:00 h115
14.07 50km USA18th Buckeye Trail 50k 7:40:34 h123
09.06 70.5mi USA33th Laurel Highlands 70 Mile Ultra 21:35:46 h78
14.04 50mi USA20th Bull Run Run 50 Miler 12:03:33 h264
01.04 50km USA5th Fools 50K Trail Run 7:20:13 h111
03.03 50km USA5th Green Jewel 50K 6:08:54 h102
2011
08.10 100km USA3rd Oil Creek 100 km Trail Run 17:24:39 h27
17.09 24h USA3rd North Coast 24 Hour Endurance Run - Open race 113.072 km105
16.07 50km USA17th Buckeye Trail 50k 7:19:24 h108
07.05 50mi USA50 Miles For Yo Momma 11:54:27 h18
03.05 50km USA4th Green Jewel 50K 6:12:57 h76
09.04 50mi USA19th Bull Run Run 50 Miler 12:04:22 h288
27.03 50km USA4th Fools 50K Trail Run 7:28:15 h100
2010
20.11 50mi USA48th JFK 50 Mile 10:35:45 h547
16.10 100km USA2nd Oil Creek 100 km Trail Run 16:47:22 h25
18.09 50km USA6th Youngstown Ultra Trail Classic 50K 6:55:24 h51
21.08 50km USA16th Germantown 50k 7:00:02 h49
17.07 50km USA16th Buckeye Trail 50k 7:58:47 h114
15.05 50mi USA7th Dances with Dirt - Gnaw Bone 50 Mile Ultra 12:44:18 h39
10.04 50mi USA18th Bull Run Run 50 Miler 11:43:20 h264
28.03 50km USA3rd Fools 50K Trail Run 7:31:59 h80
06.03 50km USA3rd Green Jewel 50K 6:01:02 h47
17.01 50km USA1st Run for Regis 50K 8:17:36 h66
17.01 50km USAWinter Buckeye Trail 50k 7:58:47 h114
2009
21.11 50mi USA47th JFK 50 Mile 11:41:41 h829
19.09 50km USA5th Youngstown Ultra Trail Classic 50K 7:35:09 h62
23.08 50km USA15th Germantown 50k 6:40:04 h52
01.08 100mi USA3rd Burning River 100 Mile Endurance Run 29:09:41 h90
19.07 50km USA15th Buckeye Trail 50k 7:11:28 h125
13.06 70.5mi USA30th Laurel Highlands 70 Mile Ultra 20:45:39 h58
09.05 50km USA6th Dances with Dirt - Gnaw Bone 50 km Ultra 7:58:58 h58
18.04 50mi USA17th Bull Run Run 50 Miler 12:19:24 h243
05.04 50km USA2nd Fools 50K Trail Run 7:19:47 h65
21.03 50km USA2nd Green Jewel 50K 6:13:03 h31
18.01 50km USAWinter Buckeye Trail 50k 8:31:04 h52
2008
22.11 50mi USA46th JFK 50 Mile 11:15:36 h590
02.08 100mi USA2nd Burning River 100 Mile Endurance Run 28:51:00 h73
12.07 50km USA14th Buckeye Trail 50k 7:29:23 h118
12.07 50km USA14th Rattlesnake Trail 50K Ultrarun 7:49:11 h70
10.05 50mi USA5th Dances With Dirt - Gnaw Bone 50 Mile Ultra 12:29:01 h21
12.04 50mi USA16th Bull Run Run 50 Miler 12:11:21 h206
02.02 40mi USA16th Uwharrie Mountain Run 10:43:10 h85
26.01 50km USAWinter Buckeye Trail 50k 7:05:50 h74
2007
17.11 50mi USA45th JFK 50 Mile 11:11:41 h747
12.05 50mi USA4th Dances With Dirt - Gnaw Bone 50 Mile Ultra 12:36:38 h16
14.04 50mi USA15th Bull Run Run 50 Miler 12:13:47 h281
2006
18.11 50mi USA44th JFK 50 Mile 10:40:15 h556
03.06 50km USA2nd Another Dam 50K Run 6:46:33 h39
08.04 50mi USA14th Bull Run Run 50 Miler 12:39:39 h251
2005
19.11 50mi USA43rd JFK 50 Mile 11:38:31 h734
16.07 50km USA12th Buckeye Trail 50k 6:53:00 h72
11.06 70.5mi USA26th Laurel Highlands 70 Mile Ultra 21:18:39 h46
09.04 50mi USA13th Bull Run Run 50 Miler 12:30:17 h246
2004
20.11 50mi USA42nd JFK 50 Mile 12:12:03 h714
12.06 70.5mi USA25th Laurel Highlands 70 Mile Ultra 21:37:20 h45
17.04 50mi USA12th Bull Run Run 50 Miler 11:51:42 h211
20.03 50km USA8th Kentucky Ultra Trail Sojourn 50 km 7:53:10 h55
2003
22.11 50mi USA41st JFK 50 Mile 11:06:19 h540
26.07 50km USA10th Buckeye Trail 50k 7:18:00 h27
14.06 70.5mi USA24th Laurel Highlands 70 Mile Ultra 21:02:40 h32
12.04 50mi USA11th Bull Run Run 50 Miler 11:38:29 h198
01.02 40mi USA11th Uwharrie Mountain Run 10:44:48 h66
25.01 50km USAWinter Buckeye Trail 50k 9:10:00 h12
2002
23.11 50mi USA40th JFK 50 Mile 11:19:08 h573
17.08 50km USA8th Germantown 50k 7:19:38 h39
27.07 50km USA9th Buckeye Trail 50k 8:38:00 h35
15.06 100mi USA13th Mohican Trail 100 Mile 28:47:10 h49
12.04 50mi USA10th Bull Run Run 50 Miler 11:56:06 h214
2001
17.11 50mi USA39th JFK 50 Mile 11:12:08 h527
18.08 50km USA7th Germantown 50k 7:47:54 h37
07.04 50mi USA9th Bull Run Run 50 Miler 12:10:33 h191
17.03 50km USA5th Kentucky Ultra Trail Sojourn 50 km 7:45:15 h48
2000
04.11 50mi USA38th JFK 50 Mile 10:30:22 h352
29.07 50km USA7th Buckeye Trail 50k 7:34:19 h33
08.07 50mi USA1st Elk Valley Ultra Run 10:41:36 h13
17.06 100mi USA11th Mohican Trail 100 Mile 27:40:16 h46
15.04 50mi USA8th Bull Run Run 50 Miler 11:37:36 h185
25.03 50km USA7th GNC 100 km Run Challenge - 50km Split 5:16:13 h66
25.03 50mi USA7th GNC 100 km Run Challenge - 50mi Split 9:13:54 h41
29.01 50km USAWinter Buckeye Trail 50k 9:11:00 h5
1999
20.11 50mi USA37th JFK 50 Mile 10:52:26 h548
1998
21.11 50mi USA36th JFK 50 Mile 10:49:59 h498
25.07 50km USA5th Buckeye Trail 50k 7:07:43 h24
20.06 100mi USA9th Mohican Trail 100 Mile 28:07:00 h38
18.04 50mi USA6th Bull Run Run 50 Miler 11:35:26 h133
1997
22.11 50mi USA35th JFK 50 Mile 10:48:56 h430
13.09 50mi USA14th Groundhog Classic 50 Mile 11:04:00 h19
07.09 100km USA3rd Dances with Dirt - Hell 100K Ultra 13:26:30 h14
26.07 50km USA4th Buckeye Trail 50k 7:10:02 h26
21.06 100mi USA8th Mohican Trail 100 Mile 26:57:03 h18
12.04 50mi USA5th Bull Run Run 50 Miler 11:19:48 h152
08.02 40mi USA5th Uwharrie Mountain Run 9:55:24 h52
1996
23.11 50mi USA34th JFK 50 Mile 10:36:51 h361
31.08 50mi USA13th Groundhog Classic 50 Mile 11:26:00 h45
27.07 50km USA3rd Buckeye Trail 50k 6:51:00 h10
15.06 100mi USA7th Mohican Trail 100 Mile 27:28:09 h20
27.04 80km CAN1st Ganaraska 80 km Trail Run 10:29:05 h6
13.04 50mi USA4th Bull Run Run 50 Miler 11:54:14 h95
30.03 50mi USA3rd GNC 50 Mile Run Challenge 8:57:15 h31
1995
18.11 50mi USA33rd JFK 50 Mile 10:35:17 h255
09.09 100km USA1st Dances with Dirt - Hell 100K Ultra 12:53:23 h6
02.09 50mi USA12th Groundhog Classic 50 Mile 10:17:17 h36
29.07 50km USA2nd Buckeye Trail 50k 7:25:33 h12
17.06 100mi USA6th Mohican Trail 100 Mile 27:14:00 h34
08.04 50mi USA3rd Bull Run Run 50 Miler 12:45:38 h122
1994
19.11 50mi USA32nd JFK 50 Mile 10:21:53 h251
1992
21.11 50mi USA30th JFK 50 Mile 10:33:59 h183
1991
23.11 50mi USA29th JFK 50 Mile 9:25:03 h123
1990
17.11 50mi USA28th JFK 50 Mile 9:49:07 h154
1989
18.11 50mi USA27th JFK 50 Mile 10:22:22 h162
1986
22.11 50mi USA24th JFK 50 Mile 9:13:15 h62
1985
23.11 50mi USA23rd JFK 50 Mile 10:10:56 h128
1983
19.11 50mi USA21st JFK 50 Mile 10:30:56 h171