Gustav Havel's 300 turns is the Open Championship of the Czech Republic on natural circuits and the Championship of the Czech Republic on natural circuits, which has been held in Hořice in Podkrkonoší since 1936. The name originated from the fact that after twelve laps of the race, a motorcyclist will complete exactly 312 turns on the Hořice racing circuit.
Since 1968, the race has been named after Gustav Havel, a Czech racer who was one of the world’s top racers and tragically died in 1967 on his way to work.
AMK in AČR Hořice is additionally announcing a free race in the Classic 350 B category at the Czech Tourist Trophy - IRRC event, on 9-10 August 2025. This category will be assigned to the Czech Republic Classic 350 A championship. The evaluation will be separate. Riders of the additionally announced categories must have the letter B on their motorcycles in front of their starting number.
Change in the time schedule see Time Table ČTT
Change in the starting procedure. All classic categories will have a shortened starting procedure. After the introductory lap, the riders will line up on the starting grid according to the results of the qualifications, they will not turn off their engines and after lining up, they will immediately be released into the warm-up lap.
| Time | Minutes | Notice | Class |
|---|---|---|---|
| 8:30 – 8:50 | 20 | 1st qual. practice | Side |
| 9:10 – 9:30 | 20 | 1st qual. practice | SP 125 |
| 9:50 – 10:15 | 25 | 1st qual. practice | SSP 600 |
| 10:35 – 11:00 | 25 | 1st qual. practice | Supermono + SSP 400 |
| 11:20 – 11:40 | 20 | 1st qual. practice | GP 125 / MOTO 3 + OPEN 250 + SSP 300 |
| 12:00 – 12:25 | 25 | 1st qual. practice | Superbike |
| 12:45 – 13:10 | 25 | 1st qual. practice | Supertwin |
| 13:10 – 13:40 | 30 | Break | |
| 13:40 – 14:00 | 20 | 2nd qual. practice | Side |
| 14:20 – 14:40 | 20 | 2nd qual. practice | SP 125 |
| 15:00 – 15:25 | 25 | 2nd qual. practice | SSP 600 |
| 15:45 – 16:10 | 25 | 2nd qual. practice | Supermono + SSP 400 |
| 16:30 – 16:50 | 20 | 2nd qual. practice | GP 125 / MOTO 3 + OPEN 250 + SSP 300 |
| 17:10 – 17:35 | 25 | 2nd qual. practice | Superbike |
| 17:55 – 18:20 | 25 | 2nd qual. practice | Supertwin |
| Time | Notice |
|---|---|
| 8:00 | Opening ceremony |
| Entrance to the track | Warm Up | Start | Laps | Class | length/km |
|---|---|---|---|---|---|
| 08:30 | 08:40 | 08:45 | - | Side | 20 min. |
| 09:40 | 09:50 | 09:55 | 10 | SP 125 | 51,500 |
| 10:50 | 11:00 | 11:05 | 12 | SSP 600 | 61,800 |
| 12:00 | 12:10 | 12:15 | 11 | Supermono + SSP 400 | 56,650 |
| 13:10 | 13:20 | 13:25 | 11 | GP 125 / MOTO 3 + OPEN 250 + SSP 300 | 56,650 |
| 14:20 | 14:30 | 14:35 | 12 | Superbike | 61,800 |
| 15:30 | 15:40 | 15:45 | 11 | Supertwin | 56,650 |
| The announcement will take place after each category finishes in the start and finish area. | |||||