Steam Packet Southern 100 Road Races
Colas Billown Circuit, Castletown, Isle of Man. A National Competition
On Monday 10th to Thursday 13th July 2023
Held under the National Sporting Code (4th Edition) and the 2023 Standing Regulations of the Auto-Cycle Union. Together with the Supplementary Regulations of Southern 100 Motorcycle Racing Ltd. and Final Instructions to be issued.
PCL 028 ACU Permit No ACU 200718