We did Grand Junction/Moab for 40th. We had been twice before, but it was still excellent. Time of year is important for Moab as it can be too hot.
For my Brother’s 30th we did a Canadian Rockies roadtrip. This was self organised and guided, as id done a summers house swap in BC prior, so had the relevant knowledge. Finished with a week with Bearback in Whistler. Fantastic.
I have done 2 week road trips in the Alps riding at different places every day or so, but riding all day, every day. In the past, and this applies to the BC trip too, enthusiasm, planing and opportunity, have outweighed the endurance and motivation of some of my companions – and these guys are good riders who are up for it, but 2 weeks super intensive mtb can break you. Some “Holidays” end up two weeks later with knackered PTSDed riders and new bikes required.
Switchbacks at Bubion are excellent.
Last summer I took a Levo to the Southern Alps. It was transformational in terms of what I could do. No flying with an ebike though.