Try these routes. There might be some grades steeper, but a lot fall into the range you mentioned.

About 1800 feet of climbing, and 69 miles,

http://www.routeslip.com/routes/59237

Or the KILLER CLIMB of 2600 feet and 68 miles, except I haven't ridden it yet with my Garmin. I am positive the ascent feet is under reported by at least half. I should mention that Routeslip under reports all of the ascents by quite a bit according to my Garmin.

http://www.routeslip.com/routes/56775

Or bike out to Silver Creek Falls. I haven't tested the route yet, but lots of climbs around Silver Creek Falls if you look at the elevation profile.

http://www.routeslip.com/routes/57999

Just click on my id on any of these routes and it will show you all of the routes I've put into the system. I've tested most of the routes, but not all of them.

Darcy