Catalina Island Half Marathon
Catalina Island Half Marathon race day weather
Warm start, adjust for headwinds
Runners will face a warm start at 69°F, climbing to 72°F by the finish. With a max wind of 12 mph from the SSW, headwinds will challenge runners from miles 3 to 5 and again at mile 10. Given the humidity at 63%, pacing adjustments are crucial, particularly during the climbs, while hydration should be prioritized throughout the race.
This course climbs 1,506 ft to its high point and back, so we forecast it at 2 points, not just the start line. At 9:00/mi, you start at 69° and finish around 9:57 AM in 72°.
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Catalina Island Half Marathon route and elevation
The Catalina Island Half Marathon course has about 2,750 ft (838 m) of climbing. It is hillier than 99% of the half marathon courses racecast.io has mapped, measured by what the hills cost in time. The hardest mile is mile 3, with 807 ft (246 m) of climbing and a 10.8% average grade.
Biggest climbs
- Miles 0.9 to 1.3: climbs about 335 ft (103 m).
- Miles 2 to 2.3: climbs about 345 ft (106 m).
- Miles 7.5 to 8.3: climbs about 445 ft (136 m).
What the hills cost
- 1:45 on a flat course is about 1:56 here (11 minutes slower).
- 2:00 on a flat course is about 2:13 here (13 minutes slower).
- 2:15 on a flat course is about 2:30 here (15 minutes slower).
Hills only, priced mile by mile on the course map. The pace calculator above adds the race-day weather.
Even-effort splits for a 1:45, 2:00 or 2:15 finish
| Mile | Climb | Descent | 1:45 | 2:00 | 2:15 |
|---|---|---|---|---|---|
| 1 | 334 ft | 112 ft | 9:03 | 10:21 | 11:38 |
| 2 | 431 ft | 352 ft | 7:51 | 8:58 | 10:06 |
| 3 | 807 ft | 238 ft | 12:27 | 14:14 | 16:00 |
| 4 | 677 ft | 414 ft | 9:26 | 10:46 | 12:08 |
| 5 | 391 ft | 124 ft | 9:27 | 10:49 | 12:10 |
| 6 | 243 ft | 257 ft | 7:12 | 8:14 | 9:15 |
| 7 | 194 ft | 451 ft | 6:34 | 7:30 | 8:26 |
| 8 | 396 ft | 195 ft | 8:53 | 10:08 | 11:25 |
| 9 | 195 ft | 197 ft | 7:14 | 8:17 | 9:18 |
| 10 | 121 ft | 342 ft | 6:37 | 7:34 | 8:31 |
| 11 | 220 ft | 731 ft | 6:24 | 7:18 | 8:14 |
| 12 | 119 ft | 492 ft | 6:25 | 7:21 | 8:15 |
| 13 | 0 ft | 221 ft | 6:38 | 7:34 | 8:31 |
| Last 0.1 | 2 ft | 1 ft | 0:49 | 0:56 | 1:03 |
Explore the Catalina Island Half Marathon course with the weather and your pace along the route, or compare it with other races.
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About the Catalina Island Half Marathon
The Catalina Island Half Marathon is a trail half marathon held each November in Avalon on Santa Catalina Island, California, with a 10K and a kids run the same morning. The course starts on Sumner Avenue near the Green Pier, climbs about four miles up Renton Mine Road into the island's interior, rolls over the east summit and returns through the Memorial Gardens to finish at the Wrigley Fountain. The half marathon has roughly 2,750 feet of climbing, mostly on dirt roads and trails on Catalina Island Conservancy land, and the course record is 1:24:05 by Elijah Orr in 2018. It is produced by Spectrum Sports, which also puts on the March Catalina Island Marathon.
