For exact dates see the race websites or contact the race organisers.
Surface in [square brackets]: [R] = sealed road or other paved surface, [T] = trail, [U] = unsealed gravel/shingle/metal road.
Hutt River Trail [T/U], 60km. (My Reports)
Heaphy Five-0 [T], ~50 mile trail run along the Heaphy Track in the Kahurangi National Park. (website)
Te Houtaewa Challenge [sand], 60km. (website)
Triple Peaks Challenge [T/R], 47km for runners, walkers, and mountain bikers. (website)
Motutapu Adventure Run [T], 49km, for 2-person teams. (website)
Tarawera Ultramarathon [T]. Distances of 85km and 56km in 2009, 100km option also available in 2010. Relay options available (2- and 4-person over the 85km and 3-person over the 56km). (website)
Northburn 100 [T], 50km, 100km, 100 mile. (website)
Bedrock 50 [T], 52km. (website)
Riverhead Adventures Trail Run [T], 50k and 30k.
Aurora 50km walk [R] (My Report)
Sri Chinmoy 12hr and 24hr track race [track] also doubles as NZ 24hr Championships. (website)
Around the Mountain Relay [R], 100 miles. (website)