Triathlon
Ironman 70.3 Oceanside
About this race
The traditional season opener — harbor swim, Camp Pendleton bike, coastal run.
Before you line up
Race-day planning
Ironman 70.3 Oceanside is held on Saturday, April 3, 2027 in Oceanside, CA. Racing begins at 06:40 AM. Registration is currently open — use the official registration link above to enter directly with the organizer.
Always confirm the date, start time, entry fee and course details on the official event site before you travel or register, as race information can change after a listing is published. For discipline-specific guidance on what to expect and how to prepare, see the Triathlon sector guide.
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