Simul-climbing (or using a running-belay) is a climbing technique where a pair of climbers who are attached by a rope simultaneously ascend a multi-pitch climbing route. [1] It contrasts with lead climbing where the leader ascends a given pitch on the route while the second climber remains in a fixed position to belay the leader in case they fall. [1] Simul-climbing is not free solo climbing, as the lead simul-climber will clip the rope into points of climbing protection as they ascend. [2] Simul-climbing is different from a rope team (which can involve larger groups) and short-roping (used by guides with their clients), which are used for flatter terrain that doesn't typically need protection points. [3]
Simul-climbing is an advanced and potentially dangerous technique. [4] [5] A fall by either climber is serious, and a 2019 article in Outside said "That's why there's a simple rule of simul-climbing: don't fall." [6] In simul-climbing, the strongest climber goes second. [1] Contemporary simul-climbers use progress capture devices (PCDs) at some of the protection points so that if the following climber falls, the PCD will lock the rope holding the falling climber and preventing the leader from being pulled off. [2] [7] While PCDs can control the consequences of a fall, no manufacturer of PCDs recommends their use for simul-climbing, and the falls from simul-climbing can place greater forces and stresses on the rope and/or the PCD than they were made to handle. [4] [8] The second climber will also use an assisted braking device as a belay device which will auto-lock in the event of a leader fall. [2] [7]
Simul-climbing is most commonly used by experienced alpinists on very long alpine climbing routes so they can move quickly on terrain that both climbers are very comfortable with, but which is sufficiently exposed to require protection. [3] [9] [10] Examples are long sharp alpine ridges or aretes or easier-angled rock slabs and couloirs (see images). [3] [4] Alex Honnold and Tommy Caldwell considered their ability to simul-climb grade 5.10 rock climbing routes as critical to their award winning traverse of Cerro Chaltén Group in 2014. [11] Simul-climbing has also been used in setting speed climbing records on big wall climbing routes such as on The Nose on El Capitan. [12] Speed simul-climbers can reduce the climbing time by three quarters by using fewer points of climbing protection (known as "running-out"), [6] but this has led to fatalities, [13] and concerns about the danger of the technique. [12] A safer alternative to simul-climbing for steep big wall routes is the technique of short-fixing, where the leader effectively sets up a fixed rope for the second climber to ascend while the leader simultaneously continues up the next pitch using a rope solo climbing technique. [1]
Climbing is the activity of using one's hands, feet, or other parts of the body to ascend a steep topographical object that can range from the world's tallest mountains to small boulders. Climbing is done for locomotion, sporting recreation, for competition, and is also done in trades that rely on ascension, such as construction and military operations. Climbing is done indoors and outdoors, on natural surfaces, and on artificial surfaces
Mountaineering, mountain climbing, or alpinism is a set of outdoor activities that involves ascending mountains. Mountaineering-related activities include traditional outdoor climbing, skiing, and traversing via ferratas that have become sports in their own right. Indoor climbing, sport climbing, and bouldering are also considered variants of mountaineering by some, but are part of a wide group of mountain sports.
Glossary of climbing terms relates to rock climbing, mountaineering, and to ice climbing.
Ice climbing is a climbing discipline that involves ascending routes consisting of frozen water. To ascend, the ice climber uses specialist equipment, particularly double ice axes and rigid crampons. To protect the route, the ice climber uses steel ice screws that require skill to employ safely and rely on the ice holding firm in any fall. Ice climbing routes can vary significantly by type, and include seasonally frozen waterfalls, high permanently frozen alpine couloirs, and large hanging icicles.
Rock-climbing equipment varies with the specific type of climbing that is undertaken. Bouldering needs the least equipment outside of climbing shoes, climbing chalk and optional crash pads. Sport climbing adds ropes, harnesses, belay devices, and quickdraws to clip into pre-drilled bolts. Traditional climbing adds the need to carry a "rack" of temporary passive and active protection devices. Multi-pitch climbing, and the related big wall climbing, adds devices to assist in ascending and descending fixed ropes. Finally, aid climbing uses unique equipment to give mechanical assistance to the climber in their upward movement.
Abseiling, also known as rappelling, is the controlled descent of a steep slope, such as a rock face, by moving down a rope. When abseiling, the person descending controls their own movement down a static or fixed rope, in contrast to lowering off, in which the rope attached to the person descending is paid out by their belayer.
Solo climbing, or soloing, is a style of climbing in which the climber climbs a route alone, without the assistance of a belayer or being part of a rope team. By its very nature, solo climbing presents a higher degree of risk to the climber, and in some cases, particularly where the climber is also not using any form of climbing protection, it is considered an extremely high-risk activity.
Aid climbing is a form of rock climbing that uses mechanical devices and equipment, such as aiders, for upward momentum. Aid climbing is contrasted with free climbing, which only uses mechanical equipment for protection, but not to assist in upward momentum. Aid climbing can involve hammering in permanent pitons and bolts, into which the aiders are clipped, but there is also 'clean aid climbing' which avoids any hammering, and only uses removable placements.
In climbing and mountaineering, belaying comprises techniques used to create friction within a climbing protection system, particularly on a climbing rope, so that a falling climber does not fall very far. A climbing partner typically applies tension at the other end of the rope whenever the climber is not moving, and removes the tension from the rope whenever the climber needs more rope to continue climbing. The belay is the place where the belayer is anchored, which is typically on the ground, or on ledge but may also be a hanging belay where the belayer themself is suspended from an anchor in the rock on a multi-pitch climb.
Lead climbing is a technique in rock climbing where the 'lead climber' clips their rope to the climbing protection as they ascend a pitch of the climbing route, while their 'second' remains at the base of the route belaying the rope to protect the 'lead climber' in the event that they fall. The term is used to distinguish between the two roles, and the greater effort and increased risk, of the role of the 'lead climber'.
Top rope climbing is a form of rock climbing where the climber is securely attached to a climbing rope that runs through a fixed anchor at the top of the climbing route, and back down to the belayer at the base of the climb. A climber who falls will just hang from the rope at the point of the fall, and can then either resume their climb or have the belayer lower them down in a controlled manner to the base of the climb. Climbers on indoor climbing walls can use mechanical auto belay devices to top rope alone.
In climbing, a pitch is a section of a climbing route between two belay points, and is most commonly related to the task of lead climbing, but is also related to abseiling. Climbing on routes that require only one pitch is known as single-pitch climbing, and climbing on routes with more than one pitch is known as multi-pitch climbing.
Rock climbing is a climbing sports discipline that involves ascending routes consisting of natural rock in an outdoor environment, or on artificial resin climbing walls in a mostly indoor environment. Routes are chronicled in guidebooks, and on online databases, with the details of how to climb the route, and who made the first ascent and the coveted first free ascent. Climbers will try to ascend a route onsight, however, a climber can spend years projecting a route before they make a redpoint ascent.
Multi-pitch climbing is a type of climbing that typically takes place on routes that are more than a single rope length in height, and thus where the lead climber cannot complete the climb as a single pitch. Where the number of pitches exceeds 6–10, it can become big wall climbing, or where the pitches are in a mixed rock and ice mountain environment, it can become alpine climbing. Multi-pitch rock climbs can come in traditional, sport, and aid formats. Some have free soloed multi-pitch routes.
An ascender is a device used for directly ascending, or for facilitating protection, with a fixed rope when climbing on steep mountain terrain. A form introduced in the 1950s became so popular it began the term "Jumar" for the device, and the verb "to jumar" to describe its use in ascending.
Free solo climbing, or free soloing, is a form of rock climbing where the climbers climb solo without ropes or other protective equipment, using only their climbing shoes and their climbing chalk. Free soloing is the most dangerous form of climbing, and, unlike bouldering, free soloists climb above safe heights, where a fall can be fatal. Though many climbers have free soloed climbing grades they are very comfortable on, only a tiny group free solo regularly, and at grades closer to the limit of their abilities.
Rope-solo climbing or rope-soloing is a form of solo climbing, but unlike with free solo climbing, which is also performed alone and with no climbing protection whatsoever, the rope-solo climber uses a mechanical self-belay device and rope system, which enables them to use the standard climbing protection to protect themselves in the event of a fall.
Big wall climbing is a form of rock climbing that takes place on long multi-pitch routes that normally require a full day, if not several days, to ascend. In addition, big wall routes are typically sustained and exposed, where the climbers remain suspended from the rock face, even sleeping hanging from the face, with limited options to sit down or escape unless they abseil back down the whole route, which is a complex and risky action. It is therefore a physically and mentally demanding form of climbing.
In climbing and mountaineering, a traverse is a section of a climbing route where the climber moves laterally, as opposed to in an upward direction. The term has broad application, and its use can range from describing a brief section of lateral movement on a pitch of a climbing route, to large multi-pitch climbing routes that almost entirely consist of lateral movement such as girdle traverses that span the entire rock face of a crag, to mountain traverses that span entire ridges connecting chains of mountain peaks.
A rope team is a climbing technique where two or more climbers who are attached to a single climbing rope move simultaneously together along easy-angled terrain that does not require points of fixed climbing protection to be inserted along the route. Rope teams contrast with simul-climbing, which involves only two climbers and where they are ascending steep terrain that will require many points of protection to be inserted along the route. A specific variant of a rope team is the technique of short-roping, which is used by mountain guides to help weaker clients, and which also does not employ fixed climbing protection points.