| Year | Men's Winner | Women's Winner | Leaderboards |
| 2023-24 | Wolfson | Mansfield | Leaderboards 2023-24 |
| 2022-23 | Wolfson | Lincoln | Leaderboards 2022-23 |
| 2021-22 | |||
| 2020-21 | Wolfson | Wolfson | Leaderboards 2020-21 (IWL A only due to Covid-19) |
| 2019-20 | St Catherine's | St Edmund Hall | |
| 2018-19 | Wolfson | Lady Margaret Hall | Leaderboards 2018-19 |
| 2017-18 | Wolfson | Corpus Christi | Leaderboards 2017-18 |
| 2016-17 | Jesus | Christ Church | Leaderboards 2016-17 |
| 2015-16 | Wolfson | Wolfson | Leaderboards 2015-16 |
| 2014-15 | Pembroke | Green Templeton | Leaderboards 2014-15 |
| 2013-14 | Hertford | Corpus Christi | Leaderboards 2013-14 |
| 2012-13 | Brasenose | Lincoln | Leaderboards 2012-13 |
| 2011-12 | Pembroke | Lincoln | Leaderboards 2011-12 |
| 2010-11 | Wadham | Lincoln | Leaderboards 2010-11 |
| 2009-10 | Wolfson | Trinity | Leaderboards 2009-10 |
| 2008-09 | |||
| 2007-08 | |||
| 2006-07 | |||
| 2005-06 | |||
| 2004-05 | |||
| 2003-04 |
| Sunrise: | API Failed |
| Sunset: | API Failed |
| Times given for Boathouse Island. More times at suntimes. |
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