Overview
Traditional climbing (or trad climbing) is a type of free climbing in rock climbing where the lead climber places the protection equipment while ascending the route; when the lead climber has completed the route, the second climber (or belayer) then removes the protection equipment as they climb the route. Traditional climbing differs from sport climbing where the protection equipment is already pre-drilled into the rock in the form of bolts.
Traditional climbing carries a much higher level of risk than bolted sport climbing, as the climber may not have placed the protection equipment correctly (while trying to ascend the route), or there may be few opportunities to insert protection equipment (e.g. on very difficult routes). Traditional climbing was once the dominant form of free climbing, but since the mid-1980s, the sport climbing (and its related form of competition climbing) has become more popular, and all subsequent grade milestones in rock climbing have been in sport climbing.
Description
Traditional climbing (or "Trad" climbing), is a form of free climbing (i.e. no artificial or mechanical device can be used to aid progression, unlike with aid climbing), performed in pairs, where the lead climber places climbing protection into the climbing route as they ascend. The second climber (or belayer), removes this temporary climbing protection as they climb the route after the lead climber has reached the top. Some consider the hammering in of pitons while climbing the route, as long as they are only for climbing protection and not to aid progression, to also be traditional climbing.
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