Races and Challenges >

Castle to Hanauma Bay Virtual TT

Sunday March 19th 2023 [UPDATED]

UPDATE: This year's event will use virtual timing due to permitting difficulties.

We will be timing this year's Castle to Hanauma Bay via GPS data rather than via live, in-person timing. We apologize for having to go this route, but it could not be helped. To ensure a competitive and safe event we will be using the following format:

Course Description

The course is slightly over 20K in length starting at Maunawili Elementary School and finishing at Hanauma Bay State Park, riding on Kalaniana’ole Highway and back roads. Time Trial rules in effect (by honor system).

Castle to Hanauma Course Map

Waimanalo Back Roads Details:


Registration is $15 for adults and $5 for juniors (9 - 18). Registration is available Online @ bikereg.com (through 10am on the day of the event).

All participants must sign the USA Cycling Event Release form.


As with previous years we want to be respectful of the small residential neighborhood near our starting line. Nobody likes being woken up by slamming doors and loud voices at 6 in the morning when they don't have a reason to be awake. This year we're going to try and do a better job of making sure we don't disturb the neighborhood. To that end here are the RULES:

Olomana Neighborhood Map

Event Day Schedule

Sunday March 19th 2023


TitleGenderAge Group
TT Bike Categories
Golden MasterMen50-59
Golden MasterMen60-69
Golden MasterMen70+
Golden MasterWomen50-59
Golden MasterWomen60-69
Golden MasterWomen70+
Other Categories
Road Bike*MenAll Ages
Road BikeWomenAll Ages
Single Speed/Fixed GearAllAll Ages
ParacyclistsAllAll Ages
Recumbents/Trikes/OtherAllAll Ages
Tandem BikesAllAll Ages
* Road Bike - Means no TT bars and no disk wheels.


No cash prizes. Gift cards will be awarded to first place in each category.


Questions? Comments? Call: Carl Brooks 808-375-0979 or Email OuttaBoundsHawaii@gmail.com.