The altitude at the end of the road is over 13600 feet. The air at the top of this mountain is thin and you could have trouble breathing especially if you are prone to breathing problems already. It can also be bitingly cold and windy at the top. If you are not used to being at high altitudes or have any medical concerns, don't attempt this journey.

The view from the top is not always what you might expect. Often you are above the clouds and all you can see in any direction is the top of Mauna Loa peeking out of the clouds and a fluffy blanket of clouds in every direction. The best way to avoid this is to check the weather before you go to the top. Try not to go later in the day when the mountain slopes are more likely to have clouds around them.

Is the trip to the top of Mauna Kea worth it? You have to decide for yourself whether or not you are equipped to handle this trip. Much of the upper surface of the mountain is a deep red and reminds you of what the surface of Mars might be like. You might not picture this terrain as belonging to Hawaii. Snow is often present at the summit especially through the winter months and locals do ski down the mountain during snowy times.