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About RaceIndexOur methodologyData coverageCyclingTriathlon

Catalina Island Marathon

  • Avalon
  • California
  • Coastal
Data current as of

Official event website & entry ↗

Same event — which distance suits you?

DistanceAscentClimb densityDescentNet elevationMax absolute gradeGAP factor
Marathon1,530 m36.3 m/km1,526 m4 m44.6%11.8%
10K398 m39.8 m/km398 m0 m39.0%13.2%
5K254 m50.7 m/km254 m0 m39.0%20.1%

Marathon

Ascent
1,530 m
Climb density
36.3 m/km
Descent
1,526 m
Net elevation
4 m
Max absolute grade
44.6%
GAP factor
11.8%

10K

Ascent
398 m
Climb density
39.8 m/km
Descent
398 m
Net elevation
0 m
Max absolute grade
39.0%
GAP factor
13.2%

5K

Ascent
254 m
Climb density
50.7 m/km
Descent
254 m
Net elevation
0 m
Max absolute grade
39.0%
GAP factor
20.1%

GAP is modelled energy-cost change versus flat, not a time penalty. Unavailable cells mean no sourced value is available yet. Click a distance for its full page.

Compare distances at this event

Same-event questions

What distances does Catalina Island Marathon offer?

Catalina Island Marathon offers Marathon, 10K, 5K, all run from the same event.

Typical conditions on race weekend

  • 15°CTypical temperature
  • 22 kphTypical wind
  • 2 mmTypical rainfall
  • 75Favourability /100
Typical conditions for the race date and locality, warmer than the endurance-optimal window. These are climatological norms, not a forecast, and are shared across every distance at this event.

Explore each distance

How we calculated this

Published facts and derived model outputs on this page are tied to stored sources or a published, version-locked methodology. We show the provenance so runners, coaches and organisers can check it. Data on this page is current as of .

Derived numbers use scoring-methodology-v1.0.

Sources used on this page (3)

Read the full methodology →

Source-backed sections

available route profile, race-day conditions, and source facts are shown on this event page. Sections appear only when their source-backed data is available.