500 rogaine participations celebrated the 30th anniversary of NZ rogaining around Wellington and Lower Hutt at the weekend. The 2021 Big Trig incorporated a 1hr, 2hr, 3hr, 4hr and 5hr rogaine (15 hrs) and a 15hr adventure rogaine involving biking between them. Conditions varied from warm and sunny to wet and dark, and back to sunny again. Participants included Ross Bidmead who took part in the first event; athletes with an endurance background, and heaps of give it a go teams. Provisional results are on the BigTrig website.