Catalina Island Marathon route map
raceindex.org has a GPS course file for Catalina Island Marathon, so runners can inspect the route line on the map. Elevation charts and ascent figures appear only when that file includes usable elevation data.
2027 edition
Entry options are not yet confirmed for this edition. Check the organiser before making plans.
Modelled energy-cost change 11.8% versus flat · net elevation 4 m
Decision summary
Lower than 10% of comparable mapped races
8:00:00 total limit divided by distance. Check gun/chip timing and intermediate limits; allow time for stops.
Historical race-date favourability, not a forecast
Stored GPS route
Quick answers
raceindex.org has a GPS course file for Catalina Island Marathon, so runners can inspect the route line on the map. Elevation charts and ascent figures appear only when that file includes usable elevation data.
The Catalina Island Marathon route has 1,530 m of ascent, 1,526 m of descent and an estimated 11.8% grade-adjusted pace penalty versus a flat route.
The Catalina Island Marathon route starts at Two Harbors, Catalina Island and finishes at Avalon (downtown), Catalina Island. Underfoot, expect trail. It passes Two Harbors, Catalina Island Conservancy backcountry, Wrigley Memorial and Avalon waterfront. runners may see the island's free-roaming American bison along the marathon course.
Its normalised GAP factor is 11.8% slower than a flat course, with about 1530 m of total ascent.