thumb|upright=1.3|A mountaineer solo climbing on [[Mount Logan]]

Solo climbing (or soloing) is a style of climbing in which the climber ascends a climbing route alone and deliberately without the assistance of a belayer (or "second"), or being part of any rope team. By its very nature, solo climbing presents a higher degree of risk to the climber as they are entirely reliant on their own skills (e.g. climbing technique, navigation) and their own equipment to complete the climbing route – any serious problems may require a self-rescue.

Solo climbing is most common in mountaineering, and particualarly in the sub-discipline of alpine climbing, and in the technical sub-discipline of rope solo climbing. The most dangerous form of solo climbing is that of free solo climbing, which means both climbing alone on steep climbing routes that would normally require climbing protection, but without using any form of climbing protection. Free solo climbing was dramatically portrayed in the climbing films Free Solo (for rock climbing) and The Alpinist (for ice climbing and for alpine climbing).

With climbing protection

The following types of solo climbing use some form of climbing protection, which typically involves around a mechanical self-locking device (or progress capture/assisted braking device) that — when used properly with a rope and standard protection — reduces the risk of serious or fatal injury to the climber: Instead of having a belayer, the climber uses a self-locking device that will hold the rope in the case of a fall, and leads the route in a traditional climbing manner, placing climbing protection as they ascend. One end of the rope is anchored below the climber and the climber pays-out the rope through the self-locking device as they ascend. Once they reach the top, they need to abseil down and re-ascend the route with an ascender, to remove the protection they placed earlier. In 1992, Destivelle used rope solo technique to create Voie Destivelle (VI 5.11b A5) on the west face of the Petit Dru, and was captured in the climbing film, 11 Days on the Dru. In 2016, Pete Whittaker rope-soloed the 35-pitch route Freerider in Yosemite in a single day.

  • Top rope solo climbing is a form of top roping where a single static fixed rope, anchored to the top of the route, is laid along the length of the climb. The climber then clips-into the fixed rope using at least one progress capture device (PCD) such as a Petzl Micro Traxion or a Camp Lift, that will allow the rope to pay-through as the climber ascends but will grip the rope tightly in the event of a fall.
  • Auto belay indoor climbing is usually a form of top roping (there are lead auto-belay devices) where the belayer is replaced by a mechanical device fixed the top (or bottom for lead auto-belay) of the route.

Without climbing protection

Free solo climbing (sometimes also just called soloing) is where a solo rock climber uses no climbing protection (or any form of climbing aids), whatsoever, except for their climbing shoes and climbing chalk (for a rock-climber) or ice tools (for an ice-climber), to ascend a climbing route.

There are a number of sub-classes of free soloing:

  • Deep-water soloing (DWS), is a subtype of free solo climbing performed on rock faces that overhang above water where in the case of a fall, the climber lands in the water.
  • FreeBASEing, is a subtype of free solo climbing performed on long multi-pitch big wall routes with a BASE jumping parachute as the sole means of protection, where a falling climber opens their parachute to arrest their fall.
  • Highball bouldering, is where the boulder exceeds in height, and therefore any fall, even where bouldering mats are used, presents a risk of serious injury. Notable highball boulders include Nalle Hukkataival's Livin' Large in Rocklands, South Africa.
  • Free solo ice climbing can also be done in a free-solo format (e.g. without any protection, such as ice screws). Notable free solo ice climbers include Canadian Marc-Andre Leclerc, and Swiss ice climber, Dani Arnold, who has free soloed routes of grade WI7. Related to this is the activity of mixed climbing free soloing (e.g. using ice climbing equipment on routes that are a combination of ice and rock).
  • Buildering, is a subtype of free solo climbing where the climber ascends a public building (or mechanical structure with crane climbing), and usually without any protection.

In film

A number of notable films have been made focused on solo (and free solo) climbing (on rock and/or on ice) including:

  • The Alpinist, a 2021 documentary film about Canadian alpinist Marc-André Leclerc, with solo, and free solo, of rock, ice, and alpine routes.
  • Free Solo, a 2018 Netflix documentary film about Alex Honnold's free solo climb of Freerider on El Capitan.
  • King Lines, a 2007 documentary film about Chris Sharma, featuring his free solo climb of the DWS route, Es Pontàs , in Mallorca.

<gallery mode="packed" heights="170">

File:Natalija Gros in Kamenjak, Croatia, 2009 photo Jure Breceljnik.jpg| deep-water soloing in Croatia

File:Steve Bate Rope Solo Zodiac El Capitan II.jpg|Stephen Bate rope solo climbing on El Capitan in Yosemite, California

File:Alain Robert - 001.jpg|Alain Robert buildering on Torre Glòries, Barcelona

File:Eiger Nordwand Speed.jpg| solo alpine climbing on the north face of the Eiger, Switzerland

</gallery>

See also

  • Aid climbing, where the climber uses mechanical aids to help ascend a route (i.e. not just for protection)
  • Traditional climbing, which requires the climber to place their climbing protection during the climb
  • Sport climbing, that uses pre-placed bolted climbing protection

References

  • Free Climbing vs Free Solo vs Solo Climbing, HardClimbs (2023)