Colorado Time Systems Ultimate Pace Clock

This article is a stub. The Ultimate Pace Clock is a Colorado Time Systems training system of the 1990s, sold in three forms: a light-reflective portable display (UPC-LR), an LED portable display (UPC-LED), or the keypad console on its own (UPC-C), which could also drive existing CTS scoreboards.

The console outlived the system and is documented separately as the pace clock controller; see the pace clocks overview for the shared background.