# Gapping > Canonical: https://pinflag.io/glossary/gapping ## Gapping URL: https://pinflag.io/glossary/gapping > Gapping is the process of checking that the distance between each club in a golfer's bag is even, so there are no large gaps or excessive overlaps in coverage. A well-gapped bag has a predictable, roughly even distance step from one club to the next. A poorly gapped one might jump 25 yards between two irons and then only 5 yards between the next two, leaving awkward in-between distances with no comfortable club for the shot. Gapping is best done from real distance data rather than assumed averages. A full set of average distances, and ideally [dispersion](https://pinflag.io/glossary/dispersion), for every club — gathered from a [launch monitor](https://pinflag.io/glossary/launch-monitor) session or from logged rounds — is what reveals a gap a golfer might not otherwise notice. Gaps matter more the closer a golfer gets to the green. A bag that's slightly uneven off the tee is a minor inconvenience, but an uneven gap among scoring clubs from 80 to 120 yards routinely forces an awkward partial swing on an approach shot that should be a full, comfortable one. See also: [Strokes Gained Approach](https://pinflag.io/guides/strokes-gained-approach)