| 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 | 01/05/2021 | 01/07/2021 | White Horse TREC Group | Summer Series 2021 | 1, 2, 2a, 3, 4 | Entries Open | whtg | ss21 summer-series | entries-open |
| Oasby TREC – Summer 2021 Competition | 17/07/2021 | 15/05/2021 | 02/07/2021 | TREC Lincolnshire | Summer Series 2021 | 1, 2, 2a | Entries Open | lincs | ss21 summer-series | entries-open |
| Quantock TREC – POSTPONED till 2022 | 03/07/2021 | 01/05/2021 | 04/06/2021 | TREC Southwest | Summer Series 2021 | 2, 2a, 3 | POSTPONED | tsw | ss21 summer-series | postponed |
| 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 |
| 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 |
| Park Farm Grass Route Series 1 | 20/06/2021 | 20/05/2021 | 10/06/2021 | Central TREC Group | Summer Series 2021 | 1 | Entries Open, Schedule Available | central | ss21 summer-series | entries-open schedule-available |
| 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 | Schedule Available | iom | summer-series ss21 | schedule-available |
| 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 |
| TRAC Frodsham Junior TREC Train and Compete POSTPONED to 2022 | 09/07/2021 | 01/05/2021 | 16/06/2021 | TRAC (TREC Riders Association Cymru) | TREC Camp | | POSTPONED | trac | camp training | postponed |
| SET Brightling Park Summer Trec | 20/06/2021 | 01/05/2021 | 04/06/2021 | South East TREC Group | Summer Series 2021 | 1, 2 | Entries Closed | setg | ss21 summer-series | entries-closed |
| BTG Greenlands EC 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 – Lyford Stud Summer PTV & MA Competition | 15/08/2021 | 04/07/2021 | 01/08/2021 | Wessex TREC Club | PTV & MA Only Competition | 1, 2, 3 | 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 |
| Wessex Lawfield Judges Training | 17/07/2021 | 01/05/2021 | 04/07/2021 | Wessex TREC Club | Judge Training | | Entries Open | wessex | judge training | entries-open |
| NEST Dinnet Arena PTV/MA TREC Competition | 04/07/2021 | 06/05/2021 | 15/06/2021 | North East Scotland TREC | PTV & MA Only Competition | 4 | Entries Open | nest | ptv-ma summer-series | entries-open |
| BTG Rawlinshaw Farm POR/PTV/MA Training | 19/06/2021 | 19/05/2021 | 13/06/2021 | Bowland TREC Group | POR, PTV & MA Training | | Awaiting Schedule, Entries Open | bowland | por-ptv-ma-training training | awaiting-schedule entries-open |
| SoS Hyndshawland Farm TREC 10/10 Competition | 27/06/2021 | 05/05/2021 | 18/05/2021 | South of Scotland TREC | 10:10 | | Entries Open | sos | 1010 summer-series | entries-open |
| SoS Hyndshawland Farm TREC Training Camp | 25/06/2021 | 05/05/2021 | 18/05/2021 | South of Scotland TREC | TREC Camp | | Entries Open | sos | camp training | entries-open |
| TSW Quantock POR Competition | 26/09/2021 | 01/08/2021 | 10/09/2021 | TREC Southwest | POR Only Competition | 1, 2 | Awaiting Schedule | tsw | por-only summer-series | awaiting-schedule |
| SETG Willow Farm PTV/MA Summer Arena Competition | 03/07/2021 | 08/05/2021 | 26/06/2021 | South East TREC Group | PTV & MA Only Competition | | Entries Open | setg | ptv-ma summer-series | entries-open |
| Wessex Cirencester Park POR Training | 25/09/2021 | 07/08/2021 | 18/09/2021 | Wessex TREC Club | POR Training | | Awaiting Schedule | wessex | por-training training | awaiting-schedule |
| WHTG Moorhouse Equestrian Centre TREC Training | 10/07/2021 | 25/05/2021 | 03/07/2021 | White Horse TREC Group | POR, PTV & MA Training | | Entries Open | whtg | por-ptv-ma-training training | entries-open |
| TSW Mendip Hills Summer Competition | 21/08/2021 | 01/07/2021 | 07/08/2021 | TREC Southwest | Summer Series 2021 | 1, 2 | Awaiting Schedule | tsw | ss21 summer-series | awaiting-schedule |
| TSW Fyne Court – On foot Orienteering Training | 10/07/2021 | 02/06/2021 | 05/07/2021 | TREC Southwest | POR Training | | Entries Open | tsw | por-training training | entries-open |
| Wessex Tumpy Green Winter Qualifier | 13/02/2022 | 16/01/2022 | 06/02/2022 | Wessex TREC Club | Winter Series 2021-22 | | Awaiting Schedule | wessex | winter-series-2021-22 winter-series | awaiting-schedule |
| Wessex Avon RDA Winter Qualifier | 19/12/2021 | 20/11/2021 | 12/12/2021 | Wessex TREC Club | Winter Series 2021-22 | | Awaiting Schedule | wessex | winter-series-2021-22 winter-series | awaiting-schedule |
| Wessex Lower Hadden Winter Qualifier | 21/11/2021 | 30/10/2021 | 14/11/2021 | Wessex TREC Club | Winter Series 2021-22 | | Awaiting Schedule | wessex | winter-series-2021-22 winter-series | awaiting-schedule |
| TSW Leawood Equestrian Centre PTV/MA Training | 18/07/2021 | 11/06/2021 | 09/07/2021 | TREC Southwest | PTV & MA Training | | Entries Open | tsw | ptv-ma-training training | entries-open |
| Wessex Cheltenham RDA Winter Qualifier | 24/10/2021 | 20/09/2021 | 17/10/2021 | Wessex TREC Club | Winter Series 2021-22 | | Awaiting Schedule | wessex | winter-series-2021-22 winter-series | awaiting-schedule |
| TREC GB TD and Traceur Training | 16/10/2021 | 14/06/2021 | 26/08/2021 | TREC GB | TD Training, Traceur Training | | Entries Open | tgb | td-training traceur-training training | entries-open |
