Historical mileage is a one time only entry of total mileage from ALL international and national rides held prior to December 01, 2014. This total mileage should also include all rides you have done with Equestrian Canada Endurance even if it is already showing up on the website. There are two mileage categories: Endurance (80 kms or 50 miles and up), and Novice (less than 80 kms/50 miles). Your historical mileage will be put towards your total mileage for Equestrian Canada Endurance.
You must calculate your total mileage in order to submit it here, and you MUST be prepared to provide proof of said mileage to Equestrian Canada if it is requested.