Depends really what route you take. But with any road trip, long or short, do all the necessary preps.
Aside from changing oil, do the regular maintenance checks either yourself or at the local shop. Aside from oil, check ALL fluids. Check the battery, alternator, and anything electrical. Make sure things are solidly connected and not worn. It would also be good to buy a fuse kit at a local store that has all fuse sizes in case you blow one on the road. Jumper cables are a plus. Check all the belts, tires, and suspension.
Bring some extra oil, coolant, and any other fluid that you think you might run low on. Bring a tow strap if possible, jack stands (to use in conjunction with your standard jack), gloves, a big towel, and a flashlight. If you got glowsticks, those would come in handy too.
Aside from the above, your emergency roadside kit stuff should include some first aid (hand sanitizer, bandaids, ointment, headache meds, antiseptic, cold/flu meds, and a couple of rolls of toilet paper). You will also want to pack extra things like a big case of bottled water and perhaps a few boxes of granola bars and beef jerky. Now this is not meant to be roadtrip snacks or anything; these are emergency rations. I hear people getting stranded in traffic, sitting there almost an entire day without any food and water--only to end up having to abandon their car (this happens a lot in snowy areas). But please don't do what my idiot friend did and buy a bunch of canned goods to throw in the back--and of course, had no can opener LOL. Also bring a blanket just in case you get stranded somewhere.
Bring maps just in case. Bring cords and adapters for all your electricals: cell phone, computer, GPS, etc. Charge them while you drive, but don't forget to unplug everything when you turn off your truck (all the connections remain live/hot).
Lastly, always keep someone informed at various intervals of your trip. Let em know when you leave, what your next stop is, what route you're taking, and when you anticipate getting there. Do this for each or every other stop.
Good luck!
