The show is scheduled in Capitola on Sunday, Oct. 13, and Village Area road closures are scheduled.
The T9 Mermaid Tri & Du Capitola takes place in the Village with road closures and traffic congestion expected.
The crash happened around 3 p.m. at 30th Avenue and Lewis Circle near Capitola.
Detours are in place, but residents are encouraged to use alternate routes and avoid Clares Street.