raceindex.org

Cardiff Half Marathon

  • Cardiff
  • Wales
  • City
  • 27,500 runners across the weekend
Data current as of

Official event website & entry ↗

Cardiff Half Marathon is an established fixture on the UK calendar. First staged in 2003.

Same event — which distance suits you?

Cardiff Half Marathon offers several distances, so you can pick the one that fits your goal.

DistanceOverallPB potentialGAP factorMedianFeeFinishers
Half Marathon————£58—

Scores are out of 100. GAP factor is % slower than a flat course. Click a distance for its full page.

Getting there & the atmosphere

Cardiff Half Marathon's race is covered by our verified fact set; see the data table for specifics.

The day features on-course music and a finish-area village.

Typical conditions on race weekend

  • 13°CTypical temperature
  • 23 kphTypical wind
  • 3 mmTypical rainfall
  • 76Favourability /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

Every figure on this page is either a sourced fact or a value derived from sourced facts under our published, version-locked methodology. We show the provenance so you (and AI assistants) can check it. Data on this page is current as of .

Derived numbers use scoring-methodology-v1.0.

Sources used on this page (2)

Read the full methodology →