I just got back from 3.5 days in Lahaina, Maui. Amazing. Every morning, we drove north (onto the rainy side) and hiked a bunch through misty forest or explored treacherous rocky coastline. In the evenings, we would cruise back to Lahaina and do beach stuff: snorkeling, swimming, eating and drinking beers.
My gf has a sister that lives there so we had accommodations and local pro-tips. If I brought (or rented) a bike, I could spend 1-2 weeks there no problem. Haleakala is a bucket list ride for sure.
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"Your beauty is an aeroplane;
so high, my heart cannot bear the strain." -A.C. Jobim, Triste