Featuring the annual midweek Sprintcar Kings Challenge for 2017.

Supported by:
- Wingless Sprints

Results: https://speedhive.mylaps.com/Events/1357849

Featuring the annual midweek Sprintcar Kings Challenge for 2018.

Supported by:
- Junior Sedans

Results: https://speedhive.mylaps.com/Events/1489538

Featuring the annual midweek Sprintcar Kings Challenge for 2021.

Supported by:
- Junior Sedans

Results: https://speedhive.mylaps.com/Events/1833697

Featuring the annual midweek Sprintcar Kings Challenge for 2022.

Supported by:
- Wingless Sprints
- Junior Sedans

Results: https://speedhive.mylaps.com/Events/1945998

The annual crown jewel event for Borderline Speedway, it's the Kings Challenge, the regular precursor to the Grand Annual Sprintcar Classic!!

The Kings Challenge, the annual prelude to the Classic is back and in a big way for 2024! The best from the USA and Australia all battle it out for the prestigious event.

Supported by:
- Wingless Sprints State of Origin SA vs. VIC