Canada

The 4,265-kilometre trail stretches from Mexico to Canada through California, Oregon and Washington state. The vast majority of the trail is in the U.S., but a small 13-kilometre extension stretches into Canada within E.C. Manning Park, southeast of Hope in southern B.C.

Previously, hikers were able to apply in advance for a permit that would allow them to hike across the border on the trail, but the CBSA said Monday that the rules have changed.

"Hikers from the U.S. without a permit who wish to complete the Canadian portion of the trail will from now on be required to first enter Canada via a designated port of entry," the CBSA said in a release, noting that the change brings it into alignment with U.S. Customs and Border Protection, which does not allow travellers to enter the U.S. from Canada on the trail.