Round Top Drive Bike Climb - PJAMM Cycling

Round Top Drive


Best views of Honolulu you will find on a bike climb.

Explore this Climb

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Climb Summary

Bicycle ride Round Top Drive - views of Diamond Head and Honolulu

Cycling Round Top Drive, Honolulu, Hawaii

Ride 4.9 miles to elevation 1,607’ gaining 1,526’ at 5.7%

View west to Diamond Head from mile 2.3

This top Oahu bike climb begins at the eastern edge of Honolulu and shares its start with its sister Climb,Tantalus Drive. The Tantalus and Round Top Drive cycling climbs are the most scenic climbs by bike in the Honolulu area.  

You will not have to guess about the start - prominent in the Arche Baker Mini Park tucked between the start of the Tantalus and Round Top bike climbs is a spectacular earpod tree (Enterolobium cyclocarpum) that is included on Hawaii’s Exceptional Tree Map[1]

Cycling Tantalus Drive - earpod tree at the start

Start - historically noted earpod tree.

Bicycle ride Round Top Drive - earpod tree plaque at start of climb

Bike climb up Round Top Drive - sign at start of climb

We merge onto Tantalus from Makiki Heights Drive and ride past large estate homes for a quarter mile until we are out of the Honolulu suburbs and into a fairly rural setting featuring tree tunnels and banyan trees.

Climbing Round Top Drive - Puu Ualakaa State Park

State Park at mile 2.5

Climbing by bike Tantalus Drive - hairpin

~12 hairpins along the climb.

Bicycle ride up Round Top Drive - view of Honolulu and Diamond Head from viewpoint.

One of the best viewpoints of Honolulu and Diamond Head at mile 1.8.

The climb ends at Kalawahine Trail which is a 5.7 mile out-back hike through lush tropical trees and foliage.

Biking up Round Top Drive -  Kalawahine Trail sign at the end

Caution if you hike here - reportedly very muddy.

Roadway surface and traffic:  There is light traffic along the climb, but all cars we encountered were respectful and moving at the speed limit - 25-30 mph.  The road is generally in good condition with just a couple rough spots to be wary of on the descent.

[1] “For the past two years, The Outdoor Circle has traveled across the State collecting information about the Exceptional Trees of Hawai‘i. By obtaining a tree's: GPS coordinates, diameter, height, condition and photo, we have been able to compile an extensive database for these important specimens. In using this data, we have been able to generate the estimated environmental and economic benefits of these trees, in the hopes of educating the public of the immense benefits that all trees have not only on the environment, but also our daily lives.”  Exceptional Tree Map Home Page.