|This article does not cite any references or sources. (September 2007)|
|Part of a series on|
While a rope may be used for safety when free climbing it is not used for making upward progress
Free climbing is a general rock climbing term that refers to climbs in which climbers do not employ climbing protection such as ropes, tri-cams, nuts, and other climbing equipment to aid in ascending the climb, although, such equipment may be used to protect against injury during falls. The term free climbing originally meant "free from aid". Free climbing includes solo climbing, traditional climbing, sport climbing and bouldering. In contrast, in aid climbing, climbing equipment is used to assist the climber in ascending the climb and can include a means for pulling the climber upward or providing points where the climber can stand on equipment to assist in the climb.
Methods and techniques 
In lead climbing, a climber climbs a route from the ground up. For protection against a fall, the lead climber trails a rope which is managed by a belayer who remains on the ground or at an established anchor. As the leader climbs, they either place traditional protection such as cams and stoppers, or clip their rope through pre-placed bolted hangers or fixed anchors. The belayer feeds rope to the lead climber through a belay device, keeping a minimum amount of slack in the system, and keeping themselves ready to catch the leader in case of a fall. The leader climbs until the top is reached, and they can then belay the following climber from above.
Both climber and belayer attach the rope to their climbing harness. The rope is tied into the climber's harness with a figure-of-eight loop or double bowline knot. The leader either places his own protection or clips into permanent protection already attached to the rock. In traditional climbing, the protection generally is removable. However, many significant first ascents in the U.S. done with a combination of crack gear and bolts placed on lead were termed "traditional" at the time (see below discussion). Usually nuts or spring-loaded camming devices (often referred to as "cams" or "friends") are set in cracks in the rock (although pitons are sometimes used). In sport climbing the protection is metal loops called hangers. Hangers are secured to the rock with either expanding masonry bolts taken from the construction industry, or by placing glue-in bolt systems. In ice climbing the protection is made-up of ice screws or similar devices hammered or screwed into the ice by the leader, and removed by the second climber.
The lead climber typically connects the rope to the protection with carabiners or quickdraws. If the lead climber falls, they will fall twice the length of the rope from the last protection point, plus rope stretch (typically 5% to 8% of the rope out), plus slack. If any of the gear breaks or pulls out of the rock or if the belayer fails to lock off the belay device immediately, the fall will be significantly longer. Thus if a climber is 2 meters above the last protection he will fall 2 meters to the protection, 2 meters below the protection, plus slack and rope stretch, for a total fall of over 4 meters.
If the leader falls, the belayer must arrest the rope to stop the fall. To achieve this the rope is run through a belay device attached to the belayer's harness. The belay device runs the rope through a series of sharp curves that, when operated properly, greatly increases friction and stops the rope from running. Some of the more popular types of belay devices are the ATC Belay Device, the Figure 8 and various auto-locking belay devices such as the Petzl Gri-Gri.
If the route being climbed is a multi-pitch route the leader sets up a secure anchor system at the top of the pitch, also called a belay, from where s/he can belay as his/her partner climbs. As the second climber climbs, he/she removes the gear from the rock in case of traditional climbing or removes the quickdraws from the bolts in the case of sport climbing. Both climbers are now at the top of the pitch with all their equipment. Note that the second climber is protected from above while climbing, but the lead climber is not, so being the lead climber is more challenging and dangerous. After completing the climb, and with both climbers at the top of the pitch, both climbers must rappel or descend the climb in order to return to their starting point. All climbs do not necessarily require the lead climber to belay the second climber from the top. The belayer could lower the lead climber down after he/she has completed a single pitch route.
There are no rules per se to free climbing, beyond showing respect for the rock and for other climbers.
Over the years, as climbing has become more popular and climbers more skilled, an entire generation of aficionados has been spawned from and with the ethics of climbing gyms and sport climbing. These climbers now share the rocks in some places with traditionally-trained adherents.
In the newer generation as in previous ones, certain new conventions have emerged as the state of the art changes. Conventions aren't universal: in fact, many older and/or more traditionally oriented climbers may ignore or actively disdain certain newer conventions, and the reverse is true as well: The more traditional values may be regarded as irrelevant, antique or "un-fun" by those who have different experience, goals and cultural identity.
While sport climbers are more likely than traditional climbers to frequently attempt routes that are too hard to successfully ascend on the first try, and repeat until successful, both cultures value positively:
- Climbing a given route on the first try without any advance firsthand knowledge of it (so-called on-sighting).
- Making a flawless ascent, perhaps repeating a route which has previously been climbed in "poor style"
- Advancing the state of the art, perhaps by developing a new route, or by climbing an established route in a creative, novel way
As matters of style, any of the following are likely to be regarded similarly by most free climbers across the various cultures. Generally, the following diminish the perception of "good style":
- Pre-climb inspections (to learn the nuances of a route rather than assessing the route from a safety point of view)
- Resting on gear or rope (hangdogging)
- Pre-placing gear (pinkpointing)
- Pulling or weighting gear Aid-style (french free)
- Prior top roping (headpointing) before sending on lead
- Practice through falling (generally more relevant in sport climbing than traditional)
Common misunderstandings of the term 
While clear in its contrast to aid climbing, the term free climbing is nonetheless prone to misunderstanding and misuse.
The two most common errors are:
- Confusing free climbing with its subset free soloing, a willfully risk-taking endeavor involving climbing with just one's hands, feet, and body without any rope or protective equipment
- Conflating soloing a free climb with free soloing, "soloing" alone meaning merely to climb with no partner, which depending on the difficulty of the route can be done safely using any of a number of self-belaying systems.
Further reading 
- How to Rock Climb, John Long