London Olympics silver medallist Sarah Walker has had to pull out of this weekends BMX national championships in Christchurch.
Walker pulled out of the event due to a family wedding.
US-based Kiwi and Rio Olympic semi-finalist Trent Jones returns home to take on a men's field which includes defending champion Nick Fox, plus Michael Bias and Cole McOnie, who were second and third last year.
With the World Cup season clashing with the national championships at Easter, the elite titles instead will be decided as part of the South Island Championships at the Christchurch City BMX Club track in Hornby.
The event has drawn the strongest elite fields for some years, with more than 30 riders lining up for elite honours.
The elite riders will contest three qualifying motos and a grand final in each class.