Reference

The official distance from the dartboard is 237cm (7 feet, 9.25 inches) from the front of your dartboard to the back of the throw line (aka Oche or toe line). An accessible darts setup The official dart board height for players who use a wheelchair is 137cm (4 feet, 6 inches), with the throwing distance also 237cm (7 feet, 9.25 inches), from ...

Simply put, dart throw line distance refers to the exact measurement from the oche (the line you must not step over when throwing) to the dartboard. In official settings, the line distance is typically 7 feet 9 1/4 inches (2.37 meters) from the face of the dartboard.

Remember, the official dartboard height is 5 feet 8 inches from the ground to the center of the bullseye. The throwing distance is 7 feet 9.25 inches from the front of the board to the throwing line, commonly known as the "oche" or "toe line."