Honolulu Marathon 2025 Registration. Fly with google earth™ over the 42.2 km (26.2 mi) course of the honolulu marathon 2025 in. Sunday, december 8, 2025 starting at 5:00 am.

Will not be accessible to any vehicles from approximately 5:30 a.m. Online registration for the 2025 honolulu marathon weekend has closed but you can still enter in person at the expo.