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About RaceIndexOur methodologyData coverageCyclingTriathlon

Belfast City Marathon

  • Belfast
  • Northern Ireland
  • City
  • 15,000 runners across the weekend
Data current as of

Official event website & entry ↗

Same event — which distance suits you?

DistanceAscentClimb densityDescentNet elevationMax absolute gradeGAP factorFee
Marathon177 m4.2 m/km198 m-22 m5.4%-0.1%£75
Relay177 m4.2 m/km198 m-22 m5.4%-0.1%Unavailable
Half Marathon75 m3.6 m/km75 m0 m5.9%0.2%£42
10KUnavailableUnavailableUnavailableUnavailableUnavailableUnavailable£25

Marathon

Ascent
177 m
Climb density
4.2 m/km
Descent
198 m
Net elevation
-22 m
Max absolute grade
5.4%
GAP factor
-0.1%
Fee
£75

Relay

Ascent
177 m
Climb density
4.2 m/km
Descent
198 m
Net elevation
-22 m
Max absolute grade
5.4%
GAP factor
-0.1%
Fee
Unavailable

Half Marathon

Ascent
75 m
Climb density
3.6 m/km
Descent
75 m
Net elevation
0 m
Max absolute grade
5.9%
GAP factor
0.2%
Fee
£42

10K

Ascent
Unavailable
Climb density
Unavailable
Descent
Unavailable
Net elevation
Unavailable
Max absolute grade
Unavailable
GAP factor
Unavailable
Fee
£25

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 Belfast City Marathon offer?

Belfast City Marathon offers Marathon, Relay, Half Marathon, 10K, all run from the same event.

Typical conditions on race weekend

  • 10°CTypical temperature
  • 19 kphTypical wind
  • 3 mmTypical rainfall
  • 86Favourability /100
Typical conditions for the race date and locality, within 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, entry fees, cost estimates, race-day conditions, and source facts are shown on this event page. Sections appear only when their source-backed data is available.