Brett Osler
Club: Serpentine Running Club
Season bests 
Runner number: 42217
Road Races X/C Multi-sport T & F
Date  |
Series |
Time  |
Graded |
Pace |
| 03/12/2023 | British Masters 5 km Road Championships | 18:53 | 76.4% | 6:05 |
| 18/04/2020 | Serpiesphere virtual 5k | 22:50 | 61.3% | 7:21 |
| 01/02/2020 | Serpentine Handicap | 26:00 | 75.7% | 6:00 |
| 03/08/2019 | Serpentine Handicap | 26:09 | 74.7% | 6:02 |
| 04/06/2022 | Serpentine Handicap | 26:21 | 75.9% | 6:05 |
| 04/09/2021 | Serpentine Handicap | 26:28 | 75.0% | 6:06 |
| 07/08/2021 | Serpentine Handicap | 26:33 | 74.7% | 6:07 |
| 02/04/2022 | Serpentine Handicap | 26:39 | 75.0% | 6:09 |
| 06/07/2019 | Serpentine Handicap | 27:08 | 72.0% | 6:16 |
| 04/05/2019 | Serpentine Handicap | 27:17 | 71.6% | 6:18 |
| 05/02/2022 | Serpentine Handicap | 27:18 | 73.2% | 6:18 |
| 07/09/2019 | Serpentine Handicap | 27:30 | 71.1% | 6:21 |
| 04/12/2021 | Serpentine Handicap | 28:04 | 71.2% | 6:28 |
| 02/03/2019 | Serpentine Handicap | 28:09 | 69.4% | 6:30 |
| 02/02/2019 | Serpentine Handicap | 28:09 | 69.4% | 6:30 |
| 05/01/2019 | Serpentine Handicap | 28:11 | 69.3% | 6:30 |
| 01/09/2018 | Serpentine Handicap | 28:45 | 67.5% | 6:38 |
| 02/09/2017 | Serpentine Handicap | 29:36 | 65.0% | 6:50 |
| 01/12/2018 | Serpentine Handicap | 29:53 | 65.4% | 6:54 |
| 01/06/2019 | Serpentine Handicap | 30:11 | 64.7% | 6:58 |
| 05/08/2017 | Serpentine Handicap | 30:43 | 62.7% | 7:05 |
| 01/07/2017 | Serpentine Handicap | 32:04 | 60.0% | 7:24 |
| 02/07/2016 | Serpentine Handicap | 32:15 | 59.3% | 7:26 |
| 01/04/2017 | Serpentine Handicap | 32:18 | 59.6% | 7:27 |
| 04/02/2017 | Serpentine Handicap | 35:34 | 54.1% | 8:12 |
| 02/05/2022 | London 10,000 | 37:31 | 76.8% | 6:02 |
| 07/01/2017 | Serpentine Handicap | 38:08 | 50.5% | 8:48 |
| 01/09/2019 | Royal Parks 10k Series Hyde Park | 38:27 | 73.2% | 6:11 |
| 27/05/2019 | London 10,000 | 38:45 | 72.6% | 6:14 |
| 30/07/2023 | Summer League 10k | 40:39 | 71.5% | 6:32 |
| 28/05/2018 | London 10,000 | 42:59 | 65.0% | 6:55 |
| 29/05/2017 | London 10,000 | 45:40 | 60.7% | 7:21 |
| 02/10/2022 | London Marathon | 3:35:56 | 60.9% | 8:14 |
Cross Country, Trail and Fell Races Road Multi-sport T & F
| Date |
Series |
Time |
Pace |
| 18/11/2023 | London Championship 10k (men) | 52:00 | 8:22 |
| 26/02/2022 | English National XC Championship (men) | 58:19 | 7:49 |
Multi-sport and Other Races Road X/C T & F
| Date |
Series |
Time |
| 22/04/2023 | Clumber Park Sprint Duathlon | 1:04:04 |
| 30/04/2023 | ITU World Duathlon Championships (standard) | 2:09:39 |
| 26/03/2023 | Ashridge Duathlon - Standard | 2:14:08 |
| 05/05/2018 | Clumber Park Classic Duathlon | 2:17:24 |
| 22/04/2018 | Stockton Duathlon (Standard) | 2:19:47 |
Track and Field Meetings Road X/C Multi-sport
| Date |
Event |
Series |
Result |
Graded |
Points |
| 16/07/2019 | 3000m | Club Championship 3000m | 10:37.70 | 74.1% | 0.00 |
| 11/07/2023 | 3000m | Club Championship 3000m | 10:38.80 | 76.3% | 0.00 |
| 10/07/2018 | 3000m | Club Championship 3000m | 11:44.40 | 66.6% | 0.00 |