OC Marathon
Newport Beach, United States of America · Sunday 2 May 2027
The event commonly known as the OC Marathon is held annually in Orange County, California, traversing the coastal communities of Newport Beach, Costa Mesa, and Santa Ana before finishing at the OC Fair and Event Center in Costa Mesa. The full marathon begins near Fashion Island in Newport Beach and ends at the heart of Costa Mesa, making it a point-to-point race where the starting and finishing locations differ. Participants can select from several race formats, including a full marathon (26.
Difficulty Calculator
h
:m
:s
Adjusted Time
4:02:32
Time difference: +2.5 minutes compared to a flat, road, temperate course.
Course Details
Elevation Gain170m
Elevation High77m
Elevation Low3m
Weather Forecast
High19°C
Low14°C
Chance of Rain4%
How hard is OC Marathon?
Moderateharder than 50% of marathons
Flattest / easiestHardest
On our difficulty model, OC Marathon plays about 6 minutes slower than an average road marathon for a 3:30 runner. It ranks #575 hardest of 1150 marathons we analyse, and #305 of 575 in United States of America. Use the calculator above to see the exact adjusted time for your own goal pace.
What will you run at OC Marathon?
Estimated finish times on this course versus the same effort on an average road marathon, based on its elevation, surface, and expected race-day temperature.
| Average-course time | On OC Marathon | Difference |
|---|---|---|
| 3:00:00 | 2:59:37 | −00:23 |
| 3:30:00 | 3:31:01 | +01:01 |
| 4:00:00 | 4:02:32 | +02:32 |
| 4:30:00 | 4:34:12 | +04:12 |
| 5:00:00 | 5:05:58 | +05:58 |
| 5:30:00 | 5:37:50 | +07:50 |
| 6:00:00 | 6:09:49 | +09:49 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
OC Marathon 2027 Course Analysis
OC Marathon is a full marathon held in Newport Beach, United States of America. It is scheduled for Sunday 2 May 2027. The course is run on road surface with 170m of total climbing, with its high point near 77m above sea level. For registration and full race details, visit the official OC Marathon website.
Elevation Profile
With 170m of total climbing, this is a gently undulating course. The elevation changes are manageable for most runners and shouldn't greatly affect your pacing.
Expected Race Day Weather
Based on historical weather data for May, the expected race day conditions are as follows. Moderate temperatures between 14°C and 19°C are expected. While comfortable for most runners, those targeting fast times should pay attention to hydration, as these temperatures can impact performance on race day. There is a low chance of rain (4%), so dry conditions are likely.
Surface Type: Road
OC Marathon is run on road surfaces, which provide the fastest and most predictable conditions for racing. Road courses allow for consistent pacing and are typically the best choice for a personal best.
Looking for an easier marathon or a tougher challenge? You can also compare OC Marathon against other marathons to find the right race for your goals.
Marathons of similar difficulty
If OC Marathon fits your goal, these courses play out about the same on our difficulty model.
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