A spell's range indicates how far from you it can reach, as defined in the Range entry of the
spell description. A spell's range is the maximum distance from you that the spell's effect can occur, as well as the maximum distance at which you can designate the spell's point of origin. If any portion of the spell's area would extend beyond this range, that area is wasted. Standard ranges include the following.
Touch: You must
touch a creature or object to affect it. A
touch spell that deals
damage can score a critical hit just as a weapon can. A
touch spell threatens a critical hit on a natural roll of 20 and deals double
damage on a successful critical hit. Some
touch spells allow you to
touch multiple targets. You can
touch as many willing targets as you can reach as part of the casting, but all targets of the spell must be touched in the same round that you finish casting the spell.