There are three sets of dots on the approach:
Some centers do not use targeting dots at the further levels.
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The approach area is 15 feet long from beginning to foul line. From foul line to the head pin (#1 pin) is 60 feet.
On a USBC regulation lane it's Sixty feet (60') +/- 1/2" from the foul line to the center of pin spot.
The foul line is 3/8" to 1" wide and the approach is 15' minimum.