Round 2 of the revived NIERDC Classic 500K Endurance Series, held on the Hampton Downs National Circuit. Part of the three-round North Island campaign forming the New Zealand Endurance Championship. Featuring saloons, GT3, and GT4 machinery across a 500km race format (or four-hour time limit) alongside a one-hour endurance race. The series is a revival of the historic Benson & Hedges 500K format first contested in 1968, with the original trophy returned to competition for 2026.