| May 15, 2021 | Spring Derby | 5:00 P.M. |
| May 21, 2021 | Test and Tune Garden Tractors | 6:00- 9:00 P.M. |
| May 22, 2021 | Test and Tune Trucks and Tractors | 8:00 A.M. – 5:00 P.M. |
| June 4, 2021 | Truck Pull | 7:00 P.M. |
| June 5, 2021 | Tractor Pull | 5:00 P.M. |
| June 11, 2021 | Garden Tractor Pull | 7:00 P.M. |
| June 12, 2021 | Truck Pull | 5:00 P.M. |
| June 18, 2021 | Two Day Thunder One: Day One | 7:00 P.M. |
| June 19, 2021 | Two Day Thunder One: Day Two (Appalachian Outlaws) | 6:00 P.M. |
| July 9, 2021 | Thunder In The Hollow One | 7:00 P.M. |
| July 16, 2021 | Garden Tractor Pull | 7:00 P.M. |
| July 17, 2021 | Tractor Pull | 6:00 P.M. |
| July 30, 2021 | Truck Pull | 7:00 P.M. |
| July 31, 2021 | Tractor Pull | 5:00 P.M. |
| August 6, 2021 | Stoystown Garden Tractor Pull | 7:00 P.M. |
| August 21, 2021 | Demolition Derby @ Somerset Fair | 6:00 P.M. |
| August 23, 2021 | Demolition Derby @ Somerset Fair | 7:00 P.M. |
| August 24, 2021 | Garden Tractor Pull @ Somerset Fair | 7:00 P.M. |
| August 26, 2021 | Tractor Pull @ Somerset Fair | 5:00 P.M. |
| August 27, 2021 | Truck Pull @ Somerset Fair | 7:00 P.M. |
| August 28, 2021 | Semi and Hot Truck Pull @ Somerset Fair | 6:00 P.M. |
| September 17, 2021 | TBD | 7:00 P.M. |
| September 18, 2021 | Thunder In The Hollow Two | 5:00 P.M. |
| September 24, 2021 | Garden Tractor Pull @ Faranda Fair | 7:00 P.M. |
| October 1, 2021 | Garden Tractor Pull | 7:00 P.M. |
| October 9, 2021 | Fall Derby | 5:00 P.M. |
| *Subject to change without notice | ||