It's early yet of course, but I've been obsessing about my summer trip since the day I bought my ticket to LA. Feel free to add comments and suggestions, as I have few absolutes at this point other than these:
1) I will visit the states of Oregon, Washington, Idaho, Montana and Wyoming.
2) I will spend a weekend with friends from Fresno, but not necessarily IN Fresno - this is where Yosemite comes in.
3) I will spend about a week, maybe a week and a half in the company of friends from San Diego, but again not necessarily IN San Diego - this is where the trip to Grand Canyon comes in.
4) I have already booked a car for June 22 - July 13, but if need be I could of course extend this period a few days.
Draft route, including appx driving distance in KM:Monday June 22: Oslo - Philly - Los Angeles
June 23: LA - Simi Valley (The Reagan Library) - San Simeon (390 km)
June 24: San Simeon (Hearst Castle) - Eureka (766 km)
June 25: Eureka (Redwood forest) - Portland (667 km)
June 26: Portland
June 27: Portland (while in Portland I'll make a quick trip up into Washington state)
June 28: Portland - Baker City (Oregon Trail Museum) - Boise (695 km)
June 29: Boise - Jackson (592 km)
June 30: Driving around in the Grand Tetons National Park
July 1: Driving around in Yellowstone National Park
July 2: Driving around in Yellowstone National Park
July 3: Yellowstone - Ranchester (497 km)
July 4: Ranchester - Little Big Horn - Rapid City (556 km)
July 5: Mount Rushmore
July 6: Rapid City - Cheyenne (507 km)
July 7: Cheyenne (driving around southern WY, prolly visit the Laramie farm that inspired the Flicka books)
July 8: Cheyenne - ?
July 9: ? - Las Vegas (total of 1,374 km over two days)
July 10: Las Vegas - Fresno (650 km)
July 11: Fresno - Yosemite (206 km each way)
July 12: Yosemite - Fresno
July 13: Fresno - Los Angeles to drop off the car (601 km) - Driving with friend to San Diego
July 14 - 16 San Diego
July 17: San Diego - Phoenix - Sedona (756 km)
July 18: Grand Canyon Tour, prolly spending the night in Flagstaff (270 km)
July 19: Flagstaff - San Diego (790 km)
July 20-22: San Diego
Wednesday July 22: San Diego - Philly - Oslo, arriving July 23