John Buzansky
Born : 1961 Cat. M65 Ultrarunner since 2007 USA
72
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
1
Countries visited ?USAUnited States
69,6%
Rank quotient ?This runner's calculation uses 161 eligible race(s): Σ(rank − 1) = 10 803; Σ finishers = 15 523. 10 803 / 15 523 × 100 = 69.59%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed161
Km — ultra races11 730 km
> 100 km12
> 160 km10
> 24h6
Longest race160,9 km

Km per year (ultra races)

723
10 races
2022
878
10 races
2023
699
9 races
2024
161
2 races
2025
280
3 races
2026

Race types (share of distance)

Road7,6%
Trail92,4%

Wins & podiums (ultra)

🏆 Win1
🏆 Win M1
🏅 Top 31
🏅 Top 3 M2
Longest winning streak1
Current streak0

HISTORY

161 race(s)
DateRacePerf.Rk
2026
12.09 100km USA15th Pine Creek Challenge 100 km 16:40:48 h14
25.07 50mi USA20th Burning River 50 Mile Endurance Run 14:30:46 h228
13.06 100km USA31st Kettle Moraine 100 km Endurance Run 20:35:52 h73
2025
08.11 50mi USA12th Tunnel Hill 50 Mile Race 12:32:20 h205
06.09 50mi USA14th Pine Creek Challenge 50 Miles 12:02:05 h21
2024
09.11 50mi USA11th Tunnel Hill 50 Mile Race 12:48:19 h276
05.10 100mi USA10th The Hennepin Hundred - 100 Mile Run 29:33:14 h164
21.09 50mi USA3rd Squatchayanda Trail Festival (Wild Goose) 15:03:29 h27
27.07 50mi USA18th Burning River 50 Mile Endurance Run 14:18:17 h229
01.06 50km USA12th Cayuga Trails 50 km Race 9:23:08 h160
04.05 24h USA6th White Lake Ultras 24 Hour Race 88.513 km30
28.04 10h USA4th April Foolish 10 Hour Endurance Trail Race 57.936 km29
23.03 50km USA36th The HAT Run 50K 8:49:04 h244
20.01 50km USA5th Florida Roots Trail Series: Fort Clinch 8:05:45 h31
2023
17.12 50km USA6th Naked Nick 50 km Race 7:55:17 h144
02.12 100km USA5th Freight Train 100km Trail Run 15:31:20 h27
07.10 100mi USA9th The Hennepin Hundred - 100 Mile Run 29:07:05 h167
29.07 50mi USA17th Burning River 50 Mile Endurance Run 14:26:40 h199
23.06 100mi USA3rd The Yeti 100 Mile Endurance Run-Washington 28:19:16 h43
03.06 50km USA11th Cayuga Trails 50 km Race 9:51:16 h154
06.05 24h USA5th White Lake Ultras 24 Hour Race 120.700 km6
15.04 10h USA3rd April Foolish 10 Hour Endurance Trail Race 51.499 km68
25.03 50km USA35th The HAT Run 50K 8:49:04 h238
11.03 33mi USA3rd Squatchapple 33 Mile Race 9:36:07 h50
2022
10.12 100km USA4th Freight Train 100km Trail Run 16:07:11 h40
01.10 100mi USA8th The Hennepin Hundred - 100 Mile Run 28:58:47 h154
17.09 9h USA7th Forgotten Forest 9 Hour Ultra Marathon 51.902 km16
04.09 12h USA12th Labor Pain 12 Hour Endurance Trail Run 56.327 km79
12.08 12h USA8th Anchor Down Ultra 12 Hour Run 63.086 km27
30.07 50mi USA16th Burning River 50 Mile Endurance Run 14:33:58 h177
25.06 50km USA6th Night Train 50k 7:37:00 h84
23.04 8h USA17th 8 Hour Adventure Trail Run 60.350 km1 🏆
19.03 50km USA34th The HAT Run 50K 8:20:51 h240
22.01 50km USA11th Angela Ivory 50K Memorial Run 7:08:35 h15
2021
11.12 100km USA3rd Freight Train 100km Trail Run 15:34:10 h30
06.11 24h USA3rd White Lake Ultras 24 Hour Race 96.560 km18
16.10 50km USA13th Oil Creek 50 km Trail Run 9:40:59 h86
02.10 100mi USA7th The Hennepin Hundred - 100 Mile Run 28:20:22 h107
11.09 45km USA7th Pleasant Creek Trail Run 7:09:06 h24
05.09 12h USA11th Labor Pain 12 Hour Endurance Trail Run 64.373 km81
24.07 50mi USA15th Burning River 50 Mile Endurance Run 14:07:06 h232
10.07 50km USA27th Buckeye Trail 50k 8:54:27 h134
26.06 50km USA5th Night Train 50k 7:39:48 h102
18.04 10h USA1st April Foolish 10 Hour Endurance Trail Race 64.373 km59
2020
19.09 9h USA5th Forgotten Forest 9 Hour Ultra Marathon 59.548 km19
08.02 100km USA15th Iron Horse 100 km Endurance Run 15:40:20 h10
18.01 52km USA10th Coldwater Rumble 52K Race 8:43:18 h64
2019
14.12 100mi USA3rd Loup Garou 100 Mile Trail Run 28:42:36 h24
26.10 50km USA7th WC-50 Ultra Trail Marathon 50km 9:01:22 h59
12.10 50km USA11th Oil Creek 50 km Trail Run 7:54:58 h69
05.10 50km USA3rd Bull Mountain 50 km Epic Run 9:17:08 h46
21.09 9h USA4th Forgotten Forest 9 Hour Ultra Marathon 50.195 km23
07.09 50km USA11th Run Woodstock - Freak 50 km 7:45:00 h108
09.08 100km USA3rd Bigfoot 100k Race 25:39:59 h41
27.04 24h USA4th Three Sisters Ultra Festival 24 Hour Run 50.292 km23
14.04 50km USA6th Trap Pond 50K 7:10:01 h27
23.03 50km USA22nd OPSF Ultra 50 km Race 8:39:02 h40
16.02 100km USA6th Black Canyon Trail 100 km Run 16:28:17 h464
26.01 54km USA2nd Running the Rose 54k 8:03:21 h38
05.01 50km USA2nd The Great Scorpion Trail Run 8:50:11 h51
2018
27.10 50km USA6th Kansas Rails-to-Trails Fall Extravaganza 50 km 6:59:00 h41
06.10 100km USA10th Oil Creek 100 km Trail Run 19:27:38 h23
29.09 50km USA9th The Bear Chase 50 km 7:24:38 h120
17.08 100mi USA14th Lean Horse Ultra-Marathon 100 Mile 28:37:01 h34
04.08 50km USA10th Dahlgren Heritage Rail Trail 50K 7:04:33 h39
19.05 56mi USA6th Cruel Jewel 50 Mile 21:22:47 h66
28.04 50km USA40th Sybil Ludington 50 km Run 6:13:19 h27
08.04 50km USA5th Trap Pond 50K 5:49:37 h16
24.03 50km USA30th The HAT Run 50K 7:23:48 h265
10.02 50mi USA13th Iron Horse 50 Mile Endurance Run 13:00:48 h16
06.01 50km USA8th Harbison 50K 7:40:01 h77
2017
16.12 60mi USA1st Loup Garou 60 Mile Trail Run 15:34:43 h7
25.11 50km USA19th Big Dog Ultra Trail Run 7:41:45 h35
11.11 50km USA8th Rosaryville Veterans Day 50K 6:35:31 h59
03.09 12h USA8th Labor Pain 12 Hour Endurance Trail Run 49.889 km174
08.07 50km USA3rd Cry Me A River 50 km Trail Run 10:34:56 h21
29.04 50km USA39th Sybil Ludington 50 km Run 6:44:48 h38
18.03 50km USA29th The HAT Run 50K 7:50:30 h291
11.02 50mi USA12th Iron Horse 50 Mile Endurance Run 13:04:57 h28
14.01 100km USA8th Weymouth Woods 100 km Trail Run 16:20:01 h31
2016
10.12 50mi USA3rd Brazos Bend 100 - 50 Mile 10:46:04 h66
12.11 50km USA7th Rosaryville Veterans Day 50K 6:37:42 h78
08.10 100km USA8th Oil Creek 100 km Trail Run 19:21:49 h54
27.08 50mi USA12th Lean Horse Ultra-Marathon 50 Mile 12:23:38 h32
06.08 50km USA8th Dahlgren Heritage Rail Trail 50K 7:05:51 h46
04.06 50km USA21st Kettle Moraine 50 km Endurance Run 7:54:00 h54
15.05 50km USA6th Dirty German Endurance Fest 50 km 6:32:41 h129
12.03 60km USA13th Land Between The Lakes 60 km Trail Run 6:37:53 h10
16.01 100km USA7th Weymouth Woods 100 km Trail Run 18:23:48 h47
2015
14.11 50km USA6th Rosaryville Veterans Day 50K 6:42:11 h80
16.05 50mi USA3rd Cruel Jewel 50 Mile 19:29:45 h30
18.04 50km USA11th Bel Monte 50 km Endurance Run 8:29:29 h18
27.03 50mi USA5th Badger Mountain 50 Mile Challenge 12:31:42 h30
07.02 100mi USA10th Iron Horse 100 Mile Endurance Run 25:17:00 h21
17.01 100km USA6th Weymouth Woods 100 km Trail Run 15:06:47 h32
2014
06.12 24h USA4th One Epic Run 24 Hour Race 49.889 km93
11.10 100mi USA6th Oil Creek 100 Miles Trail Run 31:05:40 h82
20.09 12h USA9th 12 Hour Adventure Trail Run 73.225 km35
25.05 50km USA9th Trail Festival at Pineland Farms 6:02:00 h128
19.04 50km USA10th Bel Monte 50 km Endurance Run 8:10:42 h22
05.04 50mi USA14th Potawatomi 50 Mile Trail Run 12:27:10 h32
15.02 100km USA9th Iron Horse 100 km Endurance Run 15:16:00 h34
18.01 100km USA5th Weymouth Woods 100 km Trail Run 14:37:12 h28
2013
07.12 24h USA3rd One Epic Run 24 Hour Race 114.746 km8
23.11 50km USA3rd Duncan Ridge Trail 50 km Race 9:23:21 h68
27.10 32.8mi USA4th Fire on the Mountain 50k Ultra Marathon 7:19:40 h67
24.08 50km USA7th Green Lakes Endurance Run 50 km 6:57:06 h82
10.08 50km USA2nd Wildcat Ridge Romp 50 km 8:23:31 h46
27.07 50mi USA7th Viaduct Trail Ultramarathon 50 Mile 12:01:00 h16
29.06 50mi USA3rd Black Hills 50 Mile Run 13:34:03 h21
26.05 50mi USA8th Trail Festival at Pineland Farms 11:47:42 h93
29.03 12h USA2nd Pulse Endurance Runs (Pickled Feet) 12 Hour 90.927 km4
02.03 50km USA3rd Hawkeye 50K Trail Run 6:06:06 h28
09.02 100km USA8th Iron Horse 100 km Endurance Run 12:53:15 h14
19.01 100km USA4th Weymouth Woods 100 km Trail Run 13:46:30 h21
2012
17.11 50km USA2nd Duncan Ridge Trail 50 km Race 9:31:34 h71
03.11 50mi USA12th Stone Cat 50 Mile 10:44:38 h88
13.10 100km USA4th Oil Creek 100 km Trail Run 15:31:53 h30
24.08 50mi USA5th Cheat Mountain Moonshine Madness 50 Mile Trail Run 12:55:44 h84
11.08 50km USA1st Wildcat Ridge Romp 50 km 9:55:47 h48
15.06 50mi USA21th Bighorn Mountain Wild & Scenic 50mi Trail Run 14:20:53 h126
19.05 50mi USA13th Berryman 50 Mile 12:49:06 h38
24.03 100mi USA3rd New Jersey Ultra Festival 100 Mile Race 25:23:21 h34
03.03 50km USA8th Seneca Creek Greenway Trail 50k 7:40:24 h158
2011
03.12 100km USA1st Cajun Coyote 100 km Trail Run 13:27:00 h6
12.11 50km USA2nd Rosaryville Veterans Day 50K 5:31:33 h44
30.10 32.8mi USA2nd Fire on the Mountain 50k Ultra Marathon 7:40:34 h40
08.10 100km USA3rd Oil Creek 100 km Trail Run 15:40:19 h17
24.09 50mi USA4th Virgil Crest 50 Mile Ultra 13:50:00 h40
28.08 50km USA6th Green Lakes Endurance Run 50 km 6:22:13 h58
09.07 50km USA5th Psycho Psummer Run Toto Run 50K 7:56:43 h51
17.06 50km USA20th Bighorn Mountain Wild & Scenic 50km Trail Run 7:06:42 h91
30.04 55km USA8th Capitol Peak 55K 6:43:24 h21
16.04 50km USA33rd Sybil Ludington 50 km Run 5:31:50 h21
19.02 100km USA6th Iron Horse 100 km Endurance Run 14:32:31 h12
15.01 100km USA2nd Weymouth Woods 100 km Trail Run 14:08:34 h26
2010
18.12 50km USA2nd Mel Williams Memorial Seashore (Seashore Nature Trail) 5:12:52 h65
09.10 50mi USA8th Can Lake 50 Mile Ultra 9:34:32 h40
18.09 50km USA7th Redwood Park 50K Trail Run 6:27:36 h31
27.08 50mi USA3rd Cheat Mountain Moonshine Madness 50 Mile Trail Run 12:07:19 h49
07.08 50km USA2nd Dahlgren Heritage Rail Trail 50K 5:42:32 h39
03.07 50km USA22nd Finger Lakes Fifties 50 km Run 7:09:26 h72
24.04 50km USA32nd Sybil Ludington 50 km Run 5:23:07 h23
10.04 50mi USA10th Potawatomi 50 Mile Trail Run 11:56:00 h32
13.02 50mi USA5th Iron Horse 50 Mile Endurance Run 9:40:05 h9
09.01 50mi USA3rd Running from an Angel 50 Miler 9:14:59 h24
2009
28.11 50km USA7th Derby 50k Ultra Run 5:37:06 h32
17.10 100km USA1st Wild Duluth 100 km Races 16:55:00 h9
04.10 50km USA4th Blues Cruise 50K Ultra Trail 6:32:05 h107
28.08 50mi USA2nd Cheat Mountain Moonshine Madness 50 Mile Trail Run 11:58:09 h43
08.08 50km USA1st Dahlgren Heritage Rail Trail 50K 6:08:59 h27
04.07 50km USA21st Finger Lakes Fifties 50 km Run 7:01:45 h42
09.05 50km USA28th Ice Age Trail 50 km Run 5:41:57 h32
28.03 50km USA4th Antelope Island Buffalo Run 50 km 6:26:29 h61
2008
08.11 50mi USA8th Stone Cat 50 Mile 11:05:13 h82
05.10 50km USA3rd Blues Cruise 50K Ultra Trail 6:11:06 h77
05.07 50km USA20th Finger Lakes Fifties 50 km Run 6:36:50 h43
25.05 50km USA3rd Trail Festival at Pineland Farms 5:51:06 h62
2007
30.09 50km USA14th Vermont 50 km Ultra Run 6:21:09 h64
09.09 50km USA10th Pisgah Mountain Trail Race 6:57:36 h72
30.06 50km USA19th Finger Lakes Fifties 50 km Run 5:38:20 h27