Three Castles Trial

Total event mileage will be approximately 500 miles on metalled roads. Some of the most scenic Welsh minor roads are bumpy, and low-slung cars should be driven carefully. Short loose surface sections may sometimes be used to access or leave test venues. Almost all route instructions will be in the form of a fully detailed, easy-to-use ‘Tulip’ road book showing junction diagrams and distances or expressed in the Jogularity format and supplemented by arrows or other instructions where necessary. The Event will use the Scheduled Time method. Liege timers will be used. All crews are advised to carry their own accurate timepiece and will be given an opportunity to set this to BBC time, as used on the event. All the Organisers’ times and distances will be deemed to be correct, having been established in accordance with NCR C13 App. 1 8.1d and using an accurately calibrated mileage recorder. Official distances will be in miles; equivalent kilometres will be shown. Before the event, competitors will be given the opportunity to calibrate their own trip meter or odometer over a measured distance. Competitors will start at one-minute intervals unless otherwise instructed by an official.

Road Sections: These sections will, wherever possible, be scenic in nature and must be treated as non-competitive AT ALL TIMES. The time schedule for Road Sections of the route will be based on an average speed of 30 mph or less.

Regularity Sections: There will be around twenty Regularity Sections on the public highway and/or private land, during which competitors are required to maintain varying average speeds, always of 30 mph or less. Timing points will be established on these sections to ensure adherence to the set schedule. Most will be at points clearly identified in the roadbook. Average speeds will be significantly reduced when using narrow roads. Passage or secret checks may be established without prior notice to ensure adherence to the correct route.

Driving Tests: There will be around twenty Driving Tests on private property. All will be Timed Tests.  

Full rules can be found here https://www.three-castles.co.uk/media/24551/three-castles-2026-supplementary-regulations.pdf