You probably can get a refund on your airline tickets due to the Covid restrictions being enacted by the Netherlands.
If you are looking for an "epic" journey you could set up a tour in the Pacific Northwest, especially Oreong and Washington. You would have about the same weather on the west side of the states, but you could add hills or even mountain passes into it. Actually the Pacific Coast Highway would give you a similar ride and would provide some hills. You would already speak the language, your medical insurance might cover you, and if something changes you could always get a bus, train or plane home.
Last edited by Doug64; 11-14-21 at 10:44 AM.