Question 1

How long is a half marathon?

Accepted Answer

A half marathon is 21.0975 kilometres, or 13.1 miles — exactly half the marathon distance. Most finishers cross the line in 1:45 to 2:30.

Question 2

How long does it take to train for a half marathon?

Accepted Answer

Plan on 12 to 16 weeks of training if you can already run 5K comfortably. Build to a long run of 10 to 12 miles two weeks before race day.

Question 3

What's a good half marathon time?

Accepted Answer

Around 2 hours is a typical recreational goal. Sub-1:45 is a solid club time, sub-1:30 is competitive, and sub-1:15 is elite age-group level.

Question 4

How much does a UK half marathon cost?

Accepted Answer

Entry fees range from around £25 for small regional events up to £60+ for major city halves like the Great North Run or Royal Parks. Most fall in the £30 to £45 bracket.

Half Marathons in Wales 2026

Upcoming half marathons in Wales

RTT Gower Trail Half Marathon & 10K

Cardiff Taff Trail Half Marathon 2026

Gower Trail Half Marathon & 10K 2026

Anglesey Trail Half Marathon & 10K

The Cardiff MoRun

Beacons Ultra, Beacons Marathon & Beacons Half Marathon

Afan Forest Trail Half Marathon & 10k

Conwy Half Marathon

Loggerheads Half Marathon

Sea 2 Summit | Offa's Dyke Half/Full/Ultra

The Snow Globe Gallop Bobble Hat Run | Wales

Other distances in Wales

Half Marathons in other UK regions

Frequently asked questions