Portsmouth Coastal Waterside Marathon Events

DEC
20
2026
A festive coastal running weekend in Portsmouth on 20 December 2026 offering marathon, half marathon and a new 12 km race with official merchandise available.
Sun 20 Dec 2026
Marathon Half Marathon 12 kilometers

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Portsmouth Coastal Waterside Marathon Events 2026

The Portsmouth Coastal Waterside Marathon Events take place on 20 December 2026 in Southsea, Portsmouth, with the start and finish at S Parade, PO4 0SW. The weekend focuses on festive running along coastal routes that organisers describe as super-flat and multi-terrain, with sections around Langstone Harbour that may be muddy in places.

Distances offered:

  • Portsmouth Coastal Waterside Marathon
  • Festive Half Marathon
  • 12 km of Christmas (new for 2026)

Final course maps will be released in November 2026 once routes are confirmed with the Coastal Sea Defence team. The event includes fully stocked aid stations, volunteer and spectator support, and event medals at the finish. Merchandise is available to pre-order through the event’s official merchandise partner Scimitar Sports; items include technical running kit and keepsakes. Pre-ordering is presented as a way to guarantee sizing and to collect items at or around race weekend. Merchandise is optional and sold separately from entry.

The event is organised by Believe and Achieve Events Ltd and is presented as a winter running event that highlights Portsmouth’s waterfront. Practical details such as final routes and course information will be published before the event. Visit the organization's website for the most recent information.

Events nearby

A coastal run on West Wittering Beach with expansive sandy flats at low tide, sea views and three distances 15.3k, 10k and 5k, chip timed with on-course water and medal.
Event Seven of the Wacky Races series is a seafront running event on 1 November 2026 at The Shack, Lee-on-the-Solent with 5K, distance-building options and a 6-hour challenge.
A 5 km run at Osborne House, Isle of Wight on 1 November 2026, on undulating woodland and parkland paths with coastal views; up to three spectators per runner receive free entry.
Trail routes of 21.3K, 16.5K and 12K from Goodwood Racecourse through the South Downs with varied terrain, views and on-course support.
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