Maunawili Out and Back Trail Race, 8/14/21

The Maunawili Out-n-Back is a trail run on primarily single-track and jeep road starting near the Ko’olau Golf Course, going to the trailhead in Waimanalo, and returning on the same route. The trail travels in and out of valleys along the Ko’olau mountain range; it is normally very hot, humid, and muddy with rolling hills and frequent stream bed crossings.

Join us on Saturday, August 14, 2021. Registration is OPEN NOW. The deadline to register is Tuesday, August 10, at 11:30 pm.

A few items to keep in mind:

  • COVID-19 safety protocols will be in place
  • The trails are open to the public so please be courteous to other outdoor enthusiasts on the course
  • Participants are required to carry water.

The trail series race registrations will be handled through And in order to register for a race, you will have to create an account at

Please contact us with any questions.