The Isle of Man, famous as the ‘mecca of motorcycle road racing’ has since 1955 hosted a mass-start road race every July, the Southern 100 Road Races, so called as the feature race of the event was held over a race distance of 100 miles – 24 laps of the 4.25-mile Billown Course.  Now you can show off your favourite section or corner of the S100 course with this quality. print-on-demand, cotton T-shirt from Powersport Legends.