Question 1

How do I fuel the cold ocean swim and transition?

Accepted Answer

Take in 100–150 calories within the first 10 minutes of the bike — preferably liquid. Cold water slows digestion and suppresses hunger, but your body needs fuel. Start early regardless of how you feel.

Question 2

What carb targets for Oceanside?

Accepted Answer

60–75g/hr on the bike, 45–55g/hr on the run. It's a season opener so don't chase big numbers — race your current fitness and use it as a nutrition test for the rest of the year.

Question 3

Is the Camp Pendleton bike hard?

Accepted Answer

Rolling with some punchy climbs — it's not flat but not extreme. The isolated base setting means you're truly self-sufficient between aid stations. Don't expect to draft at a WTC race.

Question 4

How cold is the Oceanside harbor swim?

Accepted Answer

60–64°F Pacific water. Wetsuit is mandatory. Cold water limits time to 30–40 min comfortably, so most athletes are in and out quickly. Vaseline on neck to prevent chafing from the wetsuit collar.

Question 5

Any tips for the Oceanside run?

Accepted Answer

Flat and fast along the harbor — this is your best chance to hold good run pace. Marine layer often burns off by 10am making it warmer mid-run. Adjust fluid intake upward if temperature rises.

Ironman 70.3 Oceanside

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Nutrition answers for Ironman 70.3 Oceanside.

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