| contest | season | date | where | advances to | results | problems | website | CMS id |
| bapc-prelims-2026 upcoming | 2026–2027 | | Leiden, The Netherlands; Mons, Belgium; Delft, The Netherlands +5 more | bapc-2026 | | | | 9586 (admin · finder) |
| bapc-prelims-2025 | 2025–2026 | | Gent, Belgium; Eindhoven, The Netherlands; Delft, The Netherlands +5 more | bapc-2025 | SI | StDSoP set | 2025.bapc.eu/preliminaries live wb src archived | 9373 (admin · finder) |
| bapc-prelims-2024 | 2024–2025 | 2024-09-21 | Leiden, The Netherlands; Enschede, The Netherlands; Mons, Belgium +5 more | bapc-2024 | SI | 12 StDSoP set | | 9009 (admin · finder) |
| bapc-prelims-2023 | 2023–2024 | 2023-09-23 | Leiden, The Netherlands; Enschede, The Netherlands; Gent, Belgium +5 more | bapc-2023 | SI | 13 StDSoP set | | 7599 (admin · finder) |
| bapc-prelims-2022 | 2022–2023 | 2022-10-01 | Mons, Belgium; Gent, Belgium; Enschede, The Netherlands +5 more | bapc-2022 | SI | 12 StDSoP set | | 5407 (admin · finder) |
| bapc-prelims-2021 | 2021–2022 | 2021-10-16 | Leiden, The Netherlands; Eindhoven, The Netherlands; Amsterdam, The Netherlands +4 more | bapc-2021 | SStI | 11 StDSoP set | 2021.bapc.eu dead wb src archived | 4930 (admin · finder) |
| bapc-prelims-2020 | 2020–2021 | 2020-11-14 | Leiden, The Netherlands; Amsterdam, The Netherlands; Eindhoven, The Netherlands +1 more | bapc-2020 | SI | 11 StDSoP set | 2020.bapc.eu/preliminaries replaced wb src | 4512 (admin · finder) |
| bapc-prelims-2019 | 2019–2020 | 2019-09-21 | Eindhoven, The Netherlands; Amsterdam, The Netherlands; Namur, Belgium +8 more | bapc-2019 | SI | 12 StDSoP set | 2019.bapc.eu/preliminaries live wb src archived · 2019.bapc.eu live wb src | 4151 (admin · finder) |
| bapc-prelims-2018 | 2018–2019 | 2018-09-29 | Ottignies-Louvain-la-Neuve, Belgium; Enschede, The Netherlands; Leiden, The Netherlands +8 more | bapc-2018 | S | 11 StDSoP set | 2018.bapc.eu/preliminaries live wb src archived | 3659 (admin · finder) |
| bapc-prelims-2017 | 2017–2018 | 2017-09-30 | Namur, Belgium; Groningen, The Netherlands; Nijmegen, The Netherlands +8 more | bapc-2017 | SI | 12 StDSoP set | | 3279 (admin · finder) |
| bapc-prelims-2016 | 2016–2017 | 2016-09-24 | Enschede, The Netherlands; Utrecht, The Netherlands; Nijmegen, The Netherlands +8 more | bapc-2016 | SStI | 11 StDSoP set | | 3117 (admin · finder) |
| bapc-prelims-2015 | 2015–2016 | | Ottignies-Louvain-la-Neuve, Belgium; Leuven, Belgium; Namur, Belgium +8 more | bapc-2015 | | 11 StDSoP set | 2015.bapc.eu dead wb src archived | 2782 (admin · finder) |
| bapc-prelims-2014 | 2014–2015 | 2014-09-27 | Delft, The Netherlands; Utrecht, The Netherlands; Groningen, The Netherlands +3 more | bapc-2014 | StI | 10 StDSoP set | | 2692 (admin · finder) |
| bapc-prelims-2013 | 2013–2014 | 2013-10-12 | Delft, The Netherlands; Eindhoven, The Netherlands; Enschede, The Netherlands +3 more | bapc-2013 | St | 11 StDSoP set | 2013.bapc.eu dead wb src archived | 2022 (admin · finder) |
| bapc-prelims-2012 | 2012–2013 | 2012-10-06 | Delft, The Netherlands; Eindhoven, The Netherlands; Groningen, The Netherlands +3 more | bapc-2012 | I | 10 StDSoP set | | 1344 (admin · finder) |
| bapc-prelims-2011 | 2011–2012 | 2011-10-01 | Delft, The Netherlands; Eindhoven, The Netherlands; Utrecht, The Netherlands +3 more | bapc-2011 | | 10 StDSoP set | bapc.eu replaced wb src archived | 889 (admin · finder) |
| bapc-prelims-2010 | 2010–2011 | | | bapc-2010 | | 10 StDSoP set | chipcie.wisv.ch/archive/2010 dead wb src archived | none |
| bapc-prelims-2009 | 2009–2010 | | | bapc-2009 | | 9 StDSoP set | chipcie.wisv.ch/archive/2009 dead wb src archived | none |