http://www.portlandhikersfieldguide.org/wiki/Cascade_Head_Hike

Activity Notes

Visit some of the most dramatic viewpoints on the north Oregon coast! We're meeting 06:30 at Barbur Transit Center in SW Portland for a long day together. It's a 180 mile drive and 14 mile hike with 2,400' elevation gain. The hike is an out-and-back, and as both ends are near sea level, we'll gain 1,200' in the morning and 1,200' in the afternoon. Our destinations will be open viewpoints of the Pacific coast and of Hart's Cove, but we'll be walking about two miles on roads. We'll have lots of exposure to sun, wind, and/or rain. 

Other Information
Driving Distance from Portland 182 miles
Distance - Round Trip 12 miles
Expected Duration Car to car in one day
Relevant Maps OC24