Not in Hillsboro per se, but there is a good set of stairs leading up to the VA from Terwilliger. They're about 1-2 miles up the hill on the right from the gas station.
I'm not 100% on this, but I think you can run the stairs in the US bank tower, and the stairs in the Wells Fargo tower. You may have to explain yourself to security, but I beleive they'll let you do it.