kart racing at Phoenix Kart Racing Association on 3/20. https://www.pkra.com/racing-schedule/
if you wanted to do some racing rather than just attend/watch, I'm happy to connect you with an arrive and drive kart rental option for 206 karts or a Rotax 125. would cost between $400 and $500 for the day (practice, qualifying, heat race, main)
IMCA Modifieds and support divisions at Central Arizona Speedway in Case Grande
IMCA Modifieds and support divisions at Canyon Speedway in Peoria