raceindex.org
Explore
Explore RaceIndex

Find your race. Make your plan.

Find a race

Choose your distance and destination.

Compare courses

See what changes from race to race.

Enter and prepare

Turn your choice into a race plan.

Race weekend

Plan travel, support and the finish.

Your next goal

Find a race that fits your experience.

Find a race
Compare courses
Enter and prepare
Race weekend
Your next goal
My Season Save races, keep preparation tasks and plan what comes next.
About RaceIndexOur methodologyData coverageCyclingTriathlon

Portland Coastal Marathon

  • Portland
  • South West
  • Coastal
  • 500 runners across the weekend
Data current as of

Official event website & entry ↗

Same event — which distance suits you?

DistanceAscentClimb densityDescentNet elevationMax absolute gradeGAP factor
Marathon715 m16.9 m/km715 m-0 m33.0%4.0%
Half Marathon364 m17.3 m/km363 m0 m33.5%4.3%
10K207 m20.7 m/km208 m-0 m22.0%4.8%

Marathon

Ascent
715 m
Climb density
16.9 m/km
Descent
715 m
Net elevation
-0 m
Max absolute grade
33.0%
GAP factor
4.0%

Half Marathon

Ascent
364 m
Climb density
17.3 m/km
Descent
363 m
Net elevation
0 m
Max absolute grade
33.5%
GAP factor
4.3%

10K

Ascent
207 m
Climb density
20.7 m/km
Descent
208 m
Net elevation
-0 m
Max absolute grade
22.0%
GAP factor
4.8%

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 Portland Coastal Marathon offer?

Portland Coastal Marathon offers Marathon, Half Marathon, 10K, all run from the same event.

Typical conditions on race weekend

  • 5°CTypical temperature
  • 17 kphTypical wind
  • 5 mmTypical rainfall
  • 78Favourability /100
Typical conditions for the race date and locality, cooler 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.