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Half marathons in September 2025

Find half marathons in September 2025 - filter by date or location, display on a map or use the advanced search to find your perfect race.

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  • Sun 7 Sep
Kenilworth, Warwickshire, UK

Kenilworth Half Marathon & 5K | Half Marathon

  • 13.1 miles road running
  • Sun 7 Sep
Taunton, Somerset, UK

Run the Blackdown Hills Trail 10K & Half Marathon | Half Marathon

  • 22.2 km trail running + 540 m ascent
  • Sun 7 Sep
Richmond, UK

Richmond Park September 5K, 10K and Half Marathon | Half Marathon

  • 13.1 miles multi terrain running
  • Sun 7 Sep
Crewe, Cheshire, UK

South Cheshire 20

  • 20 miles road running
  • Sun 7 Sep
Selby, North Yorkshire, UK

Vale of York 10K & Half Marathon | Half Marathon

  • 13.1 miles road running
  • Sun 7 Sep
Dorking, Surrey, UK

Bacchus Wine Half Marathon

  • 13.1 miles trail running + 1427 ft ascent
  • Sun 7 Sep
High Wycombe, Buckinghamshire, UK

Bradenham Blast | Half Marathon

  • 21.1 km trail running
  • Sun 7 Sep
Harwich, Essex, UK

St Helena Hospice Half Marathon

  • 13.1 miles road running
  • Sun 7 Sep
Cheia, Romania

Ciucas X3 - Half Marathon

  • 21.9 km trail running
  • Sun 7 Sep
Caernarfon, Gwynedd, UK

Caernarfon Half Marathon | Caernarfon Half Marathon

  • 13.1 miles road running + 620 ft ascent
  • Sun 7 Sep
Wellingborough, Northamptonshire, UK

Stanwick Lakes Run Series - Autumn Run | Half Marathon

  • 13.1 miles road running
  • Sun 7 Sep
Ashford, Kent, UK

Julie Rose Marathon & Half Marathon | Half Marathon

  • 13.1 miles track and field
  • Sun 7 Sep
Bridgwater, Somerset, UK

Bridgwater Half Marathon | Half Marathon

  • 13.1 miles road running
  • Sun 7 Sep
Buxtehude, Germany

Buxtehude Old Town Run - Half Marathon

  • 21.1 km road running
  • Sat 13 Sep
Ambleside, Cumbria, UK

Langdale Marathon and Half | Half Marathon

  • 21.1 km road running + 592 m ascent
  • Sat 13 Sep
Kilkenny, Ireland

Kilkenny Medieval Marathon | Half Marathon

  • 21.1 km road running
  • Sat 13 Sep
Pirmasens, Germany

Palatinate Forest Marathon | Half Marathon

  • 21.1 km road running
  • Sat 13 Sep
Goslar, Germany

10 Ponds Marathon | Half Marathon

  • 21.1 km trail running
  • Sun 14 Sep
Dumfries, Dumfries and Galloway, UK

Dumfries Half Marathon

  • 13.1 miles road running
  • Sun 14 Sep
Guernsey, Guernsey

Butterfield Half Marathon

  • 13.1 miles road running
  • Sun 14 Sep
Tallinn, Estonia

Swedbank Tallinn Marathon | Half Marathon

  • 21.1 km road running
  • Sun 14 Sep
Porto, Portugal

Hyundai Porto Half Marathon

  • 21 km road running
  • Sun 14 Sep
Masarykovo nám., Czech Republic

BREMBO Ostrava City Marathon | Half Marathon

  • 21.1 km road running
  • Sun 14 Sep
Niedernhall, Germany

Ebmpapst Marathon | Half Marathon

  • 21.2 km road running
  • Sun 14 Sep
Kassel, Germany

Kassel Marathon | Half Marathon

  • 21.1 km road running

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