| EATG Kings Forest – POR Competition | 23/05/2021 | 23/04/2021 | 17/05/2021 | East Anglia TREC Group | POR Only Competition | 1, 2, 2a | Awaiting Schedule | east-anglia | por-only summer-series | awaiting-schedule |
| Gower Spring TREC Summer 2021 Competition | 23/05/2021 | 31/03/2021 | 16/05/2021 | Red Kite TREC Group | Summer Series 2021 | 1, 2, 2a | Entries Full | red-kite | ss21 summer-series | entries-full |
| Wernham Farm – Summer 2021 Competition | 28/05/2021 | 01/04/2021 | 16/05/2021 | Wessex TREC Club | Summer Series 2021 | 1, 2, 2a, 3 | Awaiting Schedule | wessex | ss21 summer-series | awaiting-schedule |
| Oxlease Farm – CANCELLED | 26/06/2021 | 15/05/2021 | 01/06/2021 | Wessex TREC Club | Summer Series 2021 | 1 | CANCELLED | wessex | ss21 summer-series | cancelled |
| Harwood Dale TREC, North Yorkshire, Summer 2021 Competition – NEW DATE | 23/07/2021 | 12/06/2021 | 16/07/2021 | White Horse TREC Group | Summer Series 2021 | 1, 2, 2a, 3, 4 | Awaiting Schedule | whtg | ss21 summer-series | awaiting-schedule |
| Gracelands Winter Competition – NEW DATE | 11/04/2021 | 28/02/2021 | 04/04/2021 | TRAC (TREC Riders Association Cymru) | Winter Series 2020-21 | | Entries Open | trac | ws20-21 winter-series | entries-open |
| TRAC Berriewood Winter Competition – New Venue | 18/04/2021 | 03/03/2021 | 27/03/2021 | TRAC (TREC Riders Association Cymru) | Winter Series 2020-21 | | Entries Open | trac | ws20-21 winter-series | entries-open |
| Barnetby TREC -Summer 2021 Competition | 12/06/2021 | 05/04/2021 | 28/05/2021 | TREC Lincolnshire | Summer Series 2021 | 1, 2, 2a | Awaiting Schedule | lincs | ss21 summer-series | awaiting-schedule |
| Oasby TREC – Summer 2021 Competition | 17/07/2021 | 05/04/2021 | 02/07/2021 | TREC Lincolnshire | Summer Series 2021 | 1, 2, 2a | Awaiting Schedule | lincs | ss21 summer-series | awaiting-schedule |
| Quantock TREC – POSTPONED | 03/07/2021 | 01/05/2021 | 04/06/2021 | TREC Southwest | Summer Series 2021 | 2, 2a, 3 | POSTPONED | tsw | ss21 summer-series | postponed |
| SETG Willow Farm Winter Competition – NEW DATE | 10/04/2021 | 22/03/2021 | 03/04/2021 | South East TREC Group | Winter Series 2020-21 | | Entries Open | setg | ws20-21 winter-series | entries-open |
| Sands Farm EC Winter Competition – New Date | 11/04/2021 | 21/01/2021 | 05/04/2021 | South East TREC Group | Winter Series 2020-21 | | Entries Open | setg | ws20-21 winter-series | entries-open |
| Scottish Championships – Fife – Summer 2021 Competition (New Date) | 20/08/2021 | 30/06/2021 | 06/08/2021 | TREC Scotland | Summer Series 2021 | 1, 2, 2a, 3, 4 | Awaiting Schedule | trec-scotland | ss21 summer-series | awaiting-schedule |
| Central Moulton 4 – Winter Competitions – NEW DATE | 11/04/2021 | 13/09/2020 | 18/02/2021 | Central TREC Group | Winter Series 2020-21 | | Entries Open | central | ws20-21 winter-series | entries-open |
| Welsh Championships – Bryn Sion – Summer 2021 Competiton – CANCELLED | 15/05/2021 | 01/03/2021 | 24/04/2021 | TRAC (TREC Riders Association Cymru) | Summer Series 2021 | 2, 2a, 3, 4 | CANCELLED | trac | ss21 summer-series | cancelled |
| EAT Roding Hall POR | 02/05/2021 | 01/03/2021 | 23/04/2021 | East Anglia TREC Group | POR Only Competition | 1, 2, 2a | Awaiting Schedule | east-anglia | por-only summer-series | awaiting-schedule |
| TRAC Nesscliffe TREC Summer 2021 Competition – POSTPONED | 18/09/2021 | 01/07/2021 | 28/08/2021 | TRAC (TREC Riders Association Cymru) | Summer Series 2021 | 1 | POSTPONED | trac | ss21 summer-series | postponed |
| Tugford TREC, Summer 2021 Competition – Welsh Championships | 11/09/2021 | 01/07/2021 | 28/08/2021 | TRAC (TREC Riders Association Cymru) | Summer Series 2021 | 1, 2, 2a, 3, 4 | Awaiting Schedule | trac | ss21 summer-series | awaiting-schedule |
| SET The Croft Winter Competition – NEW DATE | 01/05/2021 | 07/02/2021 | 24/04/2021 | South East TREC Group | Winter Series 2020-21 | | Entries Open | setg | ws20-21 winter-series | entries-open |
| TSW Fyne Court – On foot orienteering Training – NEW DATE | 24/04/2021 | 19/11/2020 | 17/04/2021 | TREC Southwest | POR Training | | Entries Open | tsw | por-training training | entries-open |
| Park Farm Grass Route Series 1 | 19/06/2021 | 20/05/2021 | 10/06/2021 | Central TREC Group | Summer Series 2021 | 1 | Awaiting Schedule | central | ss21 summer-series | awaiting-schedule |
| Park Farm Grass Route Series 2 – NEW DATE | 10/07/2021 | 10/06/2021 | 26/06/2021 | Central TREC Group | Summer Series 2021 | 1 | Awaiting Schedule | central | ss21 summer-series | awaiting-schedule |
| CTG Park Farm Summer Competition | 27/08/2021 | 01/07/2021 | 20/08/2021 | Central TREC Group, Keysoe & Three Shires TREC Club | Summer Series 2021 | 1, 2, 2a, 3, 4 | Awaiting Schedule | central keysoe | ss21 summer-series | awaiting-schedule |
| EATG Home Farm Riddlesworth Summer Series Competition | 17/09/2021 | 16/08/2021 | 10/09/2021 | East Anglia TREC Group | Summer Series 2021 | 1, 2, 2a | Awaiting Schedule | east-anglia | ss21 summer-series | awaiting-schedule |
| IOM Eairy Mount Summer Series Competition | 03/07/2021 | 03/06/2021 | 26/06/2021 | TREC Isle of Man | Summer Series, Summer Series 2021 | 1, 2 | Awaiting Schedule | iom | summer-series ss21 | awaiting-schedule |
| IOM Llamedos Equestrian Centre Winter Competition | 18/04/2021 | 15/03/2021 | 15/04/2021 | TREC Isle of Man | Winter Series 2020-21 | | Entries Open | iom | ws20-21 winter-series | entries-open |
| IOM Conrhenny Equestrian Centre Winter Competition and Practice POR | 09/05/2021 | 09/04/2021 | 02/05/2021 | TREC Isle of Man | Winter Series 2020-21 | | Awaiting Schedule | iom | ws20-21 winter-series | awaiting-schedule |
| TREC GB National Championships | 06/08/2021 | 06/07/2021 | 20/07/2021 | | Summer Series 2021 | 2, 2a, 3, 4 | Awaiting Schedule | | ss21 summer-series | awaiting-schedule |
| WHTG – Stapleton Park Estate Winter Series Competition – NEW DATE – NEW VENUE | 03/05/2021 | 02/03/2021 | 26/04/2021 | White Horse TREC Group | Winter Series 2020-21 | | Entries Open | whtg | ws20-21 winter-series | entries-open |
| WHTG Thornton House Farm Winter Series Competition | 18/04/2021 | 08/03/2021 | 11/04/2021 | White Horse TREC Group | Winter Series 2020-21 | | Entries Open | whtg | ws20-21 winter-series | entries-open |
| WHTG XC Training for TREC | 16/05/2021 | 16/03/2021 | 10/05/2021 | White Horse TREC Group | PTV & MA Training | | Entries Open | whtg | ptv-ma-training training | entries-open |
| WHTG XC Training for TREC | 24/04/2021 | 16/03/2021 | 19/04/2021 | White Horse TREC Group | PTV & MA Training | | Entries Open | whtg | ptv-ma-training training | entries-open |
| TRAC Junior TREC Train and Compete | 09/07/2021 | 01/05/2021 | 16/06/2021 | TRAC (TREC Riders Association Cymru) | TREC Camp | | Awaiting Schedule | trac | camp training | awaiting-schedule |
| Wessex – Kites Nest Farm PTV/MA Training | 09/05/2021 | 05/03/2021 | 02/05/2021 | Wessex TREC Club | PTV & MA Training | | Entries Open | wessex | ptv-ma-training training | entries-open |
| Wessex – Kites Nest Farm PTV/MA Training | 11/04/2021 | 05/03/2021 | 04/04/2021 | Wessex TREC Club | PTV & MA Training | | Entries Open | wessex | ptv-ma-training training | entries-open |
| Wessex Lower Haddon Farm Winter Series Event | 25/04/2021 | 30/03/2021 | 16/04/2021 | Wessex TREC Club | Winter Series 2020-21 | | Entries Open | wessex | ws20-21 winter-series | entries-open |
| TSW Wellbeck Winter Series Competition | 18/04/2021 | 08/03/2021 | 11/04/2021 | TREC Southwest | Winter Series 2020-21 | | Entries Open | tsw | ws20-21 winter-series | entries-open |
| TRAC Walford Winter Series Competition | 24/04/2021 | 24/03/2021 | 17/04/2021 | TRAC (TREC Riders Association Cymru) | Winter Series 2020-21 | | Entries Open | trac | ws20-21 winter-series | entries-open |
| TSW Pontispool Winter Series Competition | 03/05/2021 | 03/04/2021 | 26/04/2021 | TREC Southwest | Winter Series 2020-21 | | Awaiting Schedule | tsw | ws20-21 winter-series | awaiting-schedule |
| Wessex Cheltenham RDA Winter Series Competition | 17/04/2021 | 03/04/2021 | 17/04/2021 | Wessex TREC Club | Winter Series 2020-21 | | Awaiting Schedule | wessex | ws20-21 winter-series | awaiting-schedule |
| SETG Mounted PTV/MA Training | 04/04/2021 | 12/03/2021 | 03/04/2021 | South East TREC Group | PTV & MA Training, Training | | Entries Open | setg | ptv-ma-training training | entries-open |
| SET Brightling Park Summer Trec | 20/06/2021 | 01/05/2021 | 04/06/2021 | South East TREC Group | Summer Series 2021 | 1, 2 | Awaiting Schedule | setg | ss21 summer-series | awaiting-schedule |
| SETG Willow Farm Winter Competition | 03/05/2021 | 03/04/2021 | 26/04/2021 | South East TREC Group | Winter Series 2020-21 | | Awaiting Schedule | setg | ws20-21 winter-series | awaiting-schedule |
| BTG TREC Training Camp | 20/08/2021 | 20/07/2021 | 15/08/2021 | Bowland TREC Group | Training, TREC Camp | | Awaiting Schedule | bowland | training camp | awaiting-schedule |
| Wessex Minchenhampton Unmounted POR Training | 02/05/2021 | 02/04/2021 | 25/04/2021 | Wessex TREC Club | POR Training | | Entries Open | wessex | por-training training | entries-open |
| BTG Mere Court Stud PTV/MA Training | 25/04/2021 | 04/04/2021 | 17/04/2021 | Bowland TREC Group | PTV & MA Training | | Entries Open | bowland | ptv-ma-training training | entries-open |
| BTG Mere Court Stud PTV/MA Training | 09/05/2021 | 04/04/2021 | 02/05/2021 | Bowland TREC Group | PTV & MA Training | | Entries Open | bowland | ptv-ma-training training | entries-open |
| Wessex – Ablington POR Ride | 15/05/2021 | 12/04/2021 | 08/05/2021 | Wessex TREC Club | POR Training, Training | | Entries Open | wessex | por-training training | entries-open |
| WESSEX – Lyford Stud Summer PTV & MA Competition | 15/08/2021 | 04/07/2021 | 01/08/2021 | Wessex TREC Club | PTV & MA Only Competition | 1, 2 | Awaiting Schedule | wessex | ptv-ma summer-series | awaiting-schedule |
| Sands Farm Summer Series TREC Competition | 05/09/2021 | 17/07/2021 | 21/08/2021 | Wessex TREC Club | Summer Series 2021 | 1 | Awaiting Schedule | wessex | ss21 summer-series | awaiting-schedule |
