
Avalon, United States of America · Saturday 14 November 2026
The Catalina Island Half Marathon offers an incredible course set on the stunning Catalina Island, just off the coast of Southern California. Runners begin in Avalon, a charming seaside town, and follow a route that weaves through the island’s rugged terrain, filled with steep ascents and dramatic cliffs. The course offers unparalleled views of the Pacific Ocean, with glimpses of nearby islands and coastal landscapes.
Adjusted Time
2:49:36
Time difference: +64.6 minutes compared to a flat, road, temperate course.
On our difficulty model, Catalina Island Half Marathon plays about 59 minutes slower than an average road half marathon for a 1:30 runner. It ranks #6 hardest of 450 half marathons we analyse, and #2 of 145 in United States of America. Use the calculator above to see the exact adjusted time for your own goal pace.
Estimated finish times on this course versus the same effort on an average road half marathon, based on its elevation, surface, and expected race-day temperature.
| Average-course time | On Catalina Island Half Marathon | Difference |
|---|---|---|
| 1:30:00 | 2:26:33 | +56:33 |
| 1:45:00 | 2:49:36 | +1:04:36 |
| 2:00:00 | 3:12:56 | +1:12:56 |
| 2:15:00 | 3:36:32 | +1:21:32 |
| 2:30:00 | 4:00:24 | +1:30:24 |
| 2:45:00 | 4:24:34 | +1:39:34 |
| 3:00:00 | 4:49:01 | +1:49:01 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Catalina Island Half Marathon is a half marathon held in Avalon, United States of America. It is scheduled for Saturday 14 November 2026. The course is run on trail surface with 703m of total climbing, with its high point near 490m above sea level. For registration and full race details, visit the official Catalina Island Half Marathon website.
This is a very challenging course with 703m of total climbing - well above the average trail marathon - topping out around 490m above sea level. Hill training is essential, and you should expect a slower finish time than on a flat course.
Based on historical weather data for November, the expected race day conditions are as follows. Moderate temperatures between 15°C and 20°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 (1%), so dry conditions are likely.
Catalina Island Half Marathon is a trail race, meaning the course includes unpaved surfaces such as dirt, gravel, or forest paths. Trail surfaces are usually slower than the road equivalent - often by 10-20% - because of uneven footing, technical sections, and frequently steeper gradients, though a smooth, non-technical or downhill trail can run faster than that suggests. Trail-specific shoes with good grip are recommended.
Looking for an easier marathon or a tougher challenge? You can also compare Catalina Island Half Marathon against other half marathons to find the right race for your goals.
If Catalina Island Half Marathon fits your goal, these courses play out about the same on our difficulty model.
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