| Event Date | Event Name | Type | Status | Organising Club | Championships |
|---|---|---|---|---|---|
| 21 May 20 | First Summer Autotest | A | CM | Ross and District Motor Sports Ltd | |
| 22 May 20 -> 24 May 20 |
Rally Portugal | SR | Int | Federation Internationale De L'Automobile | |
| 23 May 20 | Derwydd PCT | T | IC | Bala and District Motor Club Ltd | Welsh PCT Championship |
| 23 May 20 | Red Dragon Stages | M | IC | EMCOS | Welsh Tarmacadam Championship |
| 24 May 20 | MAS Trial | T | CM | Caernarvonshire and Anglesey Motor Club | |
| 31 May 20 | MAS Trial | A | CM | Caernarvonshire and Anglesey Motor Club | Welsh PCT Championship |
| 1 Jun 20 | Grass Car Trial | T | CM | Knutsford and District Motor Club | |
| 2 Jun 20 -> 3 Jun 20 |
Three Castles Trial | H | CM | The Three Castles Motor Club Ltd | |
| 5 Jun 20 -> 7 Jun 20 |
Rally Italy | SR | Int | Federation Internationale De L'Automobile | |
| 6 Jun 20 | Pembrey | S | IC | BARC (Wales Centre) | Welsh Sprint and Hillclimb Championship |
| 6 Jun 20 -> 7 Jun 20 |
Rali Bro Dyfi | RR | IC | Dovey Valley Motor Club | |
| 7 Jun 20 | Pembrey | S | IC | BARC (Wales Centre) | Welsh Sprint and Hillclimb Championship |
| 7 Jun 20 -> 12 Jun 20 |
Classic Marathon | T | Int | HERO-ERA | |
| 11 Jun 20 | Second Summer Autotest | A | CM | Ross and District Motor Sports Ltd | |
| 13 Jun 20 | Abingdon CAR-nival Sprint | S | IC | Sutton and Cheam Motor Club | |
| 14 Jun 20 | Wyre Forest | T | IC | Kidderminster Motor Car Club | Welsh PCT Championship |
| 14 Jun 20 | Abingdon CAR-nival Stages | M | IC | Sutton and Cheam Motor Club | |
| 14 Jun 20 | Red Kite Stages | SR | DP | Amman and District Motor Club Ltd | Welsh Historic Championship Welsh National Forest Championship |
| 19 Jun 20 | Scatter Rally | O | CM | Caernarvonshire and Anglesey Motor Club | |
| 20 Jun 20 | Epynt Hillclimb | S | IC | Brecon Motor Club | Welsh Sprint and Hillclimb Championship |