RiverSea Ultra

NOV
13
2027
An 82 km rivers-to-sea ultramarathon on 13 November 2027 with mixed terrain, tide-dependent starts, solo and team options, and six aid stations including two drop-bag zones.
Sat 13 Nov 2027
82 kilometers 45 kilometers 38 kilometers 24 kilometers Half Marathon

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About the race

RiverSea Ultra is an 82 km coastal and riverside ultramarathon held on 13th November 2027. The course runs from Rakahuri to South New Brighton and stays within a few hundred metres of waterways such as rivers, lagoons, ocean and streams. Total course elevation is modest with about 45 m ascent and 140 m descent.

Terrain includes stop banks, single tracks, forest trails and hard-packed beaches, offering a mix of surfaces and river and ocean views. The event notes that the tide determines the start time, and participants may need to use dunes depending on incoming tides.

Entry options include solo and team formats. Solo covers the full 82 km. Team options:

  • 2 person team Leg 1: 37.5 km, Leg 2: 44.5 km
  • 3 person team Leg 1: 37.5 km, Leg 2: 24 km, Leg 3: 20.5 km

Other distance options listed are:

  • 12.5 km
  • 25 km
  • 37.5 km
  • 50 km
  • 61.5 km
  • 68 km

Support on course comprises six fully stocked aid stations with two drop bag zones at 37.5 km and 61.5 km. Aid station provisions include toilets, food, fluids, drop bag handling and menstrual products. Visit the organization's website for the most recent information.

82 km
Solo - Full 82kms
45 km
2 Person Team - Leg 2
38 km
2 Person Team - Leg 1
38 km
3 Person Team - Leg 1
24 km
3 Person Team - Leg 2
Half Marathon
3 Person Team - Leg 3

Events nearby

Off road walk and run in Bottle Lake Forest and Christchurch beaches on Sunday 4 October 2026. Multiple distances from a 2.5 km children's run to a full marathon; dog friendly and open to participants without dogs.
A multi-distance trail running event on the Port Hills and around Lyttelton Harbour, held Sunday 18 October 2026 as the 25th Crater Rim Ultra.
A women only Frontyard Ultra at McLeans Forest on 16 January 2027 featuring repeated 6 km laps run on the hour. Runners self support from a personal aid area and the last runner to complete one more lap than others wins.
A mud obstacle event at Canterbury A & P Showgrounds with 5 km adult races, a 1.5 km children's fun run and a 500 m junior mud run with a parent.
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