Bouldering is a form of rock climbing where participants ascend a single boulder or rock formation. The routes up these boulders or formations are called boulder problems. The summits of most boulder problems are no more than 20 feet above the ground; yet, the route toward the summit may easily exceed 20 feet. Boulders that extend beyond 20 feet high are often called highballs.

Outdoor bouldering areas abound in the United States (particularly in the western half of the country), but many indoor climbing gyms also offer bouldering routes. The combination of outdoor climbing routes and indoor bouldering gyms makes bouldering a year-round sport.
The concept of recreational rock climbing dates back to the nineteenth century, particularly in the United Kingdom and the Fontainebleau region of France. 

- __Early obstacles__: Guidebooks and journals in the 1800s made mention of bouldering and boulder problems, though boulders were likely only used as practice for longer sport climbing routes.
- __Modern bouldering__: In the 1950s, American John Gill began to emphasize the concept of bouldering as a distinct branch of rock climbing. Gill encouraged the use of hand chalk, stored in chalk bags, to keep a climber's hands dry.
- __Ratings__: Gill had a background in gymnastics and mathematics, and developed a rating system for boulder problems. His bouldering grades ranged from the relatively achievable B1 boulder problem to the immensely difficult B3 boulder problem. In today's bouldering community, Gill's ratings have been replaced by other [climbing grades](https://www.masterclass.com/articles/climbing-grades-guide), including the “V Scale” from Hueco Tanks, Texas, and “Font Scale” from the Fontainebleau region of France.
- __Increasing popularity__: By the 1980s, crash pads called boulder mats became popular in the bouldering community, as did bouldering routes in indoor climbing gyms. Bouldering gained acceptance from trad climbers and sport climbers, and soon bouldering routes were scouted near popular rock climbing spots. The communities remain closely connected to this day.

A bouldering problem is a specific route up a boulder. Since most bouldering requires momentum and immense bursts of strength, bouldering problems are often planned in advance and then quickly executed once the climb begins.

Some boulderers think of boulder problems as synonymous with the rock formation to be climbed. As such, sometimes the terms "boulder" and "boulder problem" are used interchangeably.
Bouldering is a subset of the broader sport of rock climbing. However, the two climbing styles have notable differences, including: 

- __Objective__: The objective of boulder climbing is to ascend a single boulder or a small rock formation. In rock climbing—both trad climbing and sport climbing—participants may be ascending to far higher points. In multi-pitch rock climbing, climbers ascend multiple rock faces in a single journey.
- __Routes__: Most bouldering routes, called boulder problems, are short. The summits of most boulders are 20 feet or lower. Rock climbing routes, by contrast, can be long and technical.
- __Use of ropes__: Rock climbers secure themselves using ropes, attached to anchors, bolts, and pitons on a crag and controlled using a belay system device. Some sport climbers even use a top rope system featuring a pre-set hanging rope anchored to the summit of a rock face. Boulderers do not use ropes to secure themselves. Instead, they protect themselves with crash pads at the base of the boulder, which dampens the effects of a fall.
- __Involved skills__: The most successful boulderers use short bursts of brute strength and bursts of momentum to push themselves up a boulder problem. Many rock climbers must work slower and more deliberately, using careful techniques like drop knee and heel hook techniques to work their way up a crag.

The safest way to start bouldering is to begin in an indoor bouldering gym. 

- __Start safely__: Spend your first time bouldering focused on footwork and grasping handholds.
- __Understand nuances__: Indoor climbing walls can aid your technique, but bouldering is a fundamentally different skill than rock climbing. While rock climbers need endurance and evolving strategy, boulderers must often work quickly and use momentum to propel themselves up a boulder problem.
- __Move outdoors__: When you are ready to progress to outdoor climbing areas, always go bouldering with others. Bouldering partners serve as spotters, and they can also assist you if you experience an injury.
- __Keep proper equipment__: Wear climbing shoes and always use a crash pad (bouldering pad) at the bottom of your route. 
Climbing is a high-impact activity with an elevated risk of serious injury. Practice, proper guidance, and extensive safety precautions are essential when attempting a climbing pursuit. This article is for educational and informational purposes only, and is not a substitute for professional instruction or guidance.
Take your climbing mastery to new heights with the [MasterClass Annual Membership](https://www.masterclass.com) and exclusive video lessons from Alex Honnold and Tommy Caldwell, two of the world’s most accomplished climbers. Together they’ll help you get a grasp on climbing holds, balance, footwork, and more, plus teach you the ins and outs of ethical outdoor exploration.  
In the sport of bouldering, a climber (called a boulderer) tackles short rock formations via routes known as boulder problems.

In the sport of bouldering, a climber (called a boulderer) tackles short rock formations via routes known as boulder problems.

Bouldering: A Guide to Bouldering 

Bouldering is a form of rock climbing where participants ascend a single boulder or rock formation. The routes up these boulders or formations are called boulder problems. The summits of most boulder problems are no more than 20 feet above the ground; yet, the route toward the summit may easily exceed 20 feet. Boulders that extend beyond 20 feet high are often called highballs.Outdoor bouldering areas abound in the United States (particularly in the western half of the country), but many indoor climbing gyms also offer bouldering routes. The combination of outdoor climbing routes and indoor bouldering gyms makes bouldering a year-round sport.

What Is Bouldering?

The concept of recreational rock climbing dates back to the nineteenth century, particularly in the United Kingdom and the Fontainebleau region of France. <ul class="mc-m-4 list-styled"><li class="">Early obstacles: Guidebooks and journals in the 1800s made mention of bouldering and boulder problems, though boulders were likely only used as practice for longer sport climbing routes. </li><li class="">Modern bouldering: In the 1950s, American John Gill began to emphasize the concept of bouldering as a distinct branch of rock climbing. Gill encouraged the use of hand chalk, stored in chalk bags, to keep a climber&#39;s hands dry. </li><li class="">Ratings: Gill had a background in gymnastics and mathematics, and developed a rating system for boulder problems. His bouldering grades ranged from the relatively achievable B1 boulder problem to the immensely difficult B3 boulder problem. In today&#39;s bouldering community, Gill&#39;s ratings have been replaced by other <a href='https://www.masterclass.com/articles/climbing-grades-guide' target='_self' class='mc-text--link' data-mc-segment-trigger='true' data-mc-segment-event-type='Article Page Click' data-event-obj='{"textTag":"p","href":"https://www.masterclass.com/articles/climbing-grades-guide","linkCopy":"climbing grades","category":null}'>climbing grades</a>, including the “V Scale” from Hueco Tanks, Texas, and “Font Scale” from the Fontainebleau region of France. </li><li class="">Increasing popularity: By the 1980s, crash pads called boulder mats became popular in the bouldering community, as did bouldering routes in indoor climbing gyms. Bouldering gained acceptance from trad climbers and sport climbers, and soon bouldering routes were scouted near popular rock climbing spots. The communities remain closely connected to this day. </li></ul>

A Brief History of Bouldering

A bouldering problem is a specific route up a boulder. Since most bouldering requires momentum and immense bursts of strength, bouldering problems are often planned in advance and then quickly executed once the climb begins.Some boulderers think of boulder problems as synonymous with the rock formation to be climbed. As such, sometimes the terms &quot;boulder&quot; and &quot;boulder problem&quot; are used interchangeably.

What Are Bouldering Problems?

Bouldering is a subset of the broader sport of rock climbing. However, the two climbing styles have notable differences, including: <ul class="mc-m-4 list-styled"><li class="">Objective: The objective of boulder climbing is to ascend a single boulder or a small rock formation. In rock climbing—both trad climbing and sport climbing—participants may be ascending to far higher points. In multi-pitch rock climbing, climbers ascend multiple rock faces in a single journey. </li><li class="">Routes: Most bouldering routes, called boulder problems, are short. The summits of most boulders are 20 feet or lower. Rock climbing routes, by contrast, can be long and technical. </li><li class="">Use of ropes: Rock climbers secure themselves using ropes, attached to anchors, bolts, and pitons on a crag and controlled using a belay system device. Some sport climbers even use a top rope system featuring a pre-set hanging rope anchored to the summit of a rock face. Boulderers do not use ropes to secure themselves. Instead, they protect themselves with crash pads at the base of the boulder, which dampens the effects of a fall. </li><li class="">Involved skills: The most successful boulderers use short bursts of brute strength and bursts of momentum to push themselves up a boulder problem. Many rock climbers must work slower and more deliberately, using careful techniques like drop knee and heel hook techniques to work their way up a crag. </li></ul>

What Is the Difference Between Bouldering and Rock Climbing?

The safest way to start bouldering is to begin in an indoor bouldering gym. <ul class="mc-m-4 list-styled"><li class="">Start safely: Spend your first time bouldering focused on footwork and grasping handholds. </li><li class="">Understand nuances: Indoor climbing walls can aid your technique, but bouldering is a fundamentally different skill than rock climbing. While rock climbers need endurance and evolving strategy, boulderers must often work quickly and use momentum to propel themselves up a boulder problem. </li><li class="">Move outdoors: When you are ready to progress to outdoor climbing areas, always go bouldering with others. Bouldering partners serve as spotters, and they can also assist you if you experience an injury. </li><li class="">Keep proper equipment: Wear climbing shoes and always use a crash pad (bouldering pad) at the bottom of your route. </li></ul>

How to Start Bouldering

Climbing is a high-impact activity with an elevated risk of serious injury. Practice, proper guidance, and extensive safety precautions are essential when attempting a climbing pursuit. This article is for educational and informational purposes only, and is not a substitute for professional instruction or guidance.

Before You Start Climbing

Take your climbing mastery to new heights with the <a href='https://www.masterclass.com' target='_self' class='mc-text--link' data-mc-segment-trigger='true' data-mc-segment-event-type='Article Page Click' data-event-obj='{"textTag":"p","href":"https://www.masterclass.com","linkCopy":"MasterClass Annual Membership","category":null}'>MasterClass Annual Membership</a> and exclusive video lessons from Alex Honnold and Tommy Caldwell, two of the world’s most accomplished climbers. Together they’ll help you get a grasp on climbing holds, balance, footwork, and more, plus teach you the ins and outs of ethical outdoor exploration.

Ready to Give “On the Rocks” a Whole New Meaning?

In the sport of bouldering, a climber (called a boulderer) tackles short rock formations via routes known as boulder problems.

In the sport of bouldering, a climber (called a boulderer) tackles short rock formations via routes known as boulder problems.
