Coquihalla Summit is a highway summit along the Coquihalla Highway in British Columbia, Canada. It is the highest point on the highway between the cities of Hope and Merritt. It is located just south of the former toll booth plaza on the Coquihalla Highway, about 50 km north of Hope, and 65 km south of Merritt and is the divide between the Coquihalla Riveā¦Coquihalla Summit is a highway summit along the Coquihalla Highway in British Columbia, Canada. It is the highest point on the highway between the cities of Hope and Merritt. It is located just south of the former toll booth plaza on the Coquihalla Highway, about 50 km north of Hope, and 65 km south of Merritt and is the divide between the Coquihalla River and the Coldwater River.