North Shore (Oregon) is a 13 mile out-and-back trail near Lowell, Oregon that runs alongside Lookout Point Lake. The elevation only ends up showing 8-900 feet of climbing, but it feels like much more due to the numerous punchy climbs that really start to take their toll over the ride.
This ride, my legs were pretty tired after having done a 100km virtual race on Zwift the previous day. That coupled with temps between 25 and 32 F kept things interesting. Good fun!