andrewintown wrote:
Agree with all above. Do it, be prepared for hot/wet/bad weather and take the advice of the guys from the bike shop as to whether you should go or come back another day.
I did it in a 1 day mission - flew in from Kauai, rented a car, drove to Maui Cyclery, got a bike, up, down, drive to aiport, hamburger+beers, fly back to Kauai. ~8 hours on Maui all up.
4 hrs up 1hr40 down based on cycling (commuting) ~200k a week.
Vest+armwarmers+2 waterbottles and some powerbar things... wore fingerless gloves but could have done with fingers.
Carry some money for food & drink along the way.
Carry a garmin for the mandatory FB/Strava/whatever posts
...carry a credit card, too! The ranger station at 7000 ft absolutely requires a CC to pay the $12 bike entrance fee.