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DK
Donald Kosiak
MaleNorth Dakota1999–2025
28
Total Finishes
23
Different Races
9
States (18%)
2:03:05
PR (9:24/mi)
3:27:18
Average
+2:17:47
Slower (first to last)
Medal House
2017
Bismarck Marathon
3:21:08
#344 overall#130 gender
2017
Wabash Trace Nature Trail Marathon
3:28:45
#149 overall#70 gender
2017
Chattanooga Marathon
3:29:45
#1205 overall#576 gender
2017
Galloping Gertie Half
3:32:34
#222 overall#99 gender
2017
Galloping Gertie Half
3:32:34
#223 overall#100 gender
2016
Outer Banks Marathon
3:13:51
#1772 overall#652 gender
2016
Allianz Richmond Marathon, CarMax Richmond Half Marathon, & Capital One Richmond 8k
3:15:15
#7059 overall
2014
Bismarck Marathon
2:50:23
#442 overall#142 gender
2013
Get Lucky Half Marathon
2:52:28
#2575 overall#1024 gender
2012
Whistlestop Marathon
3:28:43
#1411 overall#542 gender
2008
Sioux Falls Marathon
2:03:05
#561 overall#315 gender
1999
Grandma's Marathon
2:18:11
#2619 overall#1405 gender
Performance Timeline
Complete Race Log
| Year | Race | State | Time | Place |
|---|---|---|---|---|
| 2025 | Bismarck MarathonBismarck | ND | 4:35:58 | #510 |
| 2025 | Bismarck MarathonBismarck | ND | 4:35:58 | #510 |
| 2021 | Bismarck MarathonBismarck | ND | 3:32:32 | #305 |
| 2021 | Bismarck MarathonBismarck | ND | 3:32:32 | #305 |
| 2021 | Deadwood Mickelson Trail MarathonDeadwood | SD | 3:46:54 | #1348 |
| 2021 | Deadwood Mickelson Trail MarathonDeadwood | SD | 3:46:54 | #1348 |
| 2020 | Montana MarathonBillings | MT | 3:26:08 | #206 |
| 2019 | Bismarck MarathonBismarck | ND | 2:44:55 | #328 |
| 2018 | Maine Marathon, Half Marathon and Marathon RelayPortland | ME | 3:28:28 | #1750 |
| 2018 | Bismarck MarathonBismarck | ND | 3:29:39 | #324 |
| 2018 | New Hampshire Marathon, 10K, and 5K WalkBristol | NH | 3:32:01 | #188 |
| 2018 | Phoenix Wicked Half Marathon, 10K, 5K and Spooky SprintPeoria | AZ | 3:35:32 | #174 |
| 2018 | Phoenix Wicked Run - Half Marathon, 10K, 5K, and Spooky Sprint | — | 3:35:32 | #174 |
| 2017 | Bismarck MarathonBismarck | ND | 3:21:08 | #344 |
| 2017 | Wabash Trace Nature Trail MarathonShenandoah | IA | 3:28:45 | #149 |
| 2017 | Chattanooga MarathonChattanoga | TN | 3:29:45 | #1205 |
| 2017 | Galloping Gertie HalfGig Harbor | WA | 3:32:34 | #222 |
| 2017 | Galloping Gertie Half | — | 3:32:34 | #223 |
| 2017 | Route 66 Marathon & Half Marathon, Marathon RelayTulsa | OK | 3:37:55 | #4361 |
| 2017 | Bridge of the Gods RunCascade Locks | OR | 3:58:28 | #918 |
| 2017 | Bridge of the Gods | — | 3:58:28 | #917 |
| 2016 | Outer Banks MarathonManteo | NC | 3:13:51 | #1772 |
| 2016 | Allianz Richmond Marathon, CarMax Richmond Half Marathon, & Capital One Richmond 8kRichmond | VA | 3:15:15 | #7059 |
| 2014 | Bismarck MarathonBismarck | ND | 2:50:23 | #442 |
| 2013 | Get Lucky Half MarathonMinneapolis | MN | 2:52:28 | #2575 |
| 2012 | Whistlestop MarathonAshland | WI | 3:28:43 | #1411 |
| 2008 | Sioux Falls MarathonSioux Falls | SD | 2:03:05 | #561 |
| 1999 | Grandma's MarathonDuluth | MN | 2:18:11 | #2619 |
States Raced
1 race 2 races 3-4 races 5+ races
State Breakdown
NDNorth Dakota
8 racesSDSouth Dakota
3 racesMNMinnesota
2 racesAZArizona
1 raceNCNorth Carolina
1 raceNHNew Hampshire
1 raceOROregon
1 raceTNTennessee
1 raceWAWashington
1 race50-State Challenge
9/ 50 states
41 states to go