Derek O'Brien
M45 · 25 race results
Best times
| Distance | Time | Race | Date |
|---|---|---|---|
| 5K | 26:40 | Fota Cheetah 5K Run | 18 May 2023 |
| 5 Mile | 37:05 | Irish Runner 5 Mile | 29 Jun 2013 |
| 10K | 37:20 | Dunboyne 55th 10K | 22 Mar 2026 |
| 10 Mile | 1:10:38 | Frank Duffy 10 Mile | 24 Aug 2019 |
| Half Marathon | 1:46:29 | Ratoath AC Half Marathon | 13 Sept 2025 |
| Marathon | 2:53:35 | Chicago Marathon | 12 Oct 2025 |
Recent results
| Date | Race | Distance | Time | Place |
|---|---|---|---|---|
| 3 Oct 2026 | Lusk 20 Mile | 20 Mile | 2:58:10 | 85th |
| 19 Jul 2026 | Irish Runner 10 Mile Challenge | 10 Mile | 1:23:09 | 708th |
| 22 Mar 2026 | Dunboyne 55th 10K | 10K | 37:20 | 173rd |
| 12 Oct 2025 | Chicago Marathon | Marathon | 2:53:35 | 2501st |
| 13 Sept 2025 | Ratoath AC Half Marathon | Half Marathon | 1:46:29 | 755th |
| 5 Jul 2025 | Clontarf 5 Mile & Half Marathon | Half Marathon | 1:58:34 | 1741st |
| 3 Nov 2024 | New York City Marathon | Marathon | 3:06:44 | 2960th |
| 26 May 2024 | LSA Peninsula 4 Mile | 4 Mile | 32:02 | 130th |
| 15 Apr 2024 | Boston Marathon | Marathon | 3:17:08 | 6177th |
| 3 Mar 2024 | Lusk 4 Mile | 4 Mile | 29:41 | 224th |
| 28 Jan 2024 | 40th AXA Raheny 5 Mile | 5 Mile | 38:29 | 1517th |
| 18 May 2023 | Fota Cheetah 5K Run | 5K | 26:40 | 312th |
| 5 Mar 2023 | Lusk 4 Mile | 4 Mile | 36:21 | 429th |
| 18 Aug 2022 | Man O War Round 7K | 7km | 27:43 | 10th |
| 27 Feb 2021 | Lusk Virtual 4 Mile | 4 Mile | 26:26 | 40th |
| 27 Oct 2019 | Dublin Marathon | Marathon | 3:18:56 | 1791st |
| 24 Aug 2019 | Frank Duffy 10 Mile | 10 Mile | 1:10:38 | 305th |
| 29 Oct 2017 | Dublin Marathon | Marathon | 4:15:36 | 8719th |
| 28 Oct 2013 | Dublin Marathon | Marathon | 3:59:35 | 5543rd |
| 21 Sept 2013 | Dublin Half Marathon | Half Marathon | 1:46:51 | 1574th |
| 24 Aug 2013 | Frank Duffy 10 Mile | 10 Mile | 1:18:34 | 1423rd |
| 21 Jul 2013 | Fingal 10K | 10K | 46:08 | 654th |
| 29 Jun 2013 | Irish Runner 5 Mile | 5 Mile | 37:05 | 847th |
| 31 Oct 2005 | Dublin Marathon | Marathon | 3:32:21 | 1104th |
| 25 Oct 2004 | Dublin Marathon | Marathon | 3:43:34 | 1861st |