The UIAA grade is a climbing difficulty scale using Roman numerals (I, II, up to XII), maintained by the international climbing federation and used mainly in Germany, Austria, and Eastern Europe. Higher numerals mean harder climbing, and plus or minus signs add finer steps between grades.
The V-scale (or Hueco scale) is the American system for grading bouldering difficulty, running from V0 for beginners upward — V5, V10, V15 — with no fixed upper limit. Created at Hueco Tanks, Texas, it rates the hardest moves of a boulder problem and is the most common bouldering grade system in the US.
The French grade, or sport grade, is the most widely used system for rating climbing routes worldwide. It uses a number plus a letter and an optional plus — such as 6a, 7b+, or 8c — with higher values meaning harder. It rates a route's overall difficulty and is the standard for sport climbing across much of the world.
Gym climbing is climbing on artificial walls indoors, with colour-coded plastic holds marking routes and problems. Gyms offer top-rope, lead, and bouldering in a controlled setting with rental gear and classes, making them the most common entry point into climbing and a popular year-round training venue.
Slab climbing is climbing on rock that is less than vertical, where the angle is low but holds are often small or absent. Success depends on delicate footwork, balance, and friction (smearing) rather than upper-body strength. Slabs reward precise technique and composure, since slips usually mean scraping down the rock.
Ice climbing is the sport of ascending frozen waterfalls, ice-covered rock, and glaciers using ice axes, crampons, and ice screws for protection. Climbers swing tools and kick crampon points into the ice to move upward. Conditions change constantly with temperature, making judgment as important as technique.
Free soloing is climbing without a rope or any protective gear, where a fall would almost certainly be fatal. It is the most dangerous form of climbing, practiced by a small number of elite climbers on terrain well within their ability. It is distinct from free climbing, which uses ropes for protection.
Free climbing is climbing using only your hands, feet, and natural rock features for upward progress, with the rope and gear used solely to protect against a fall — not to help you move. It contrasts with aid climbing, where gear bears weight. Sport, trad, and bouldering are all forms of free climbing, and it is often confused with free soloing.
Lead climbing is a style where the climber ascends with the rope trailing from below, clipping it into protection along the way, rather than having it anchored above. Falls are longer and more dynamic than top-roping, and both climber and belayer need specific skills, making lead the gateway to most outdoor climbing.
Traditional, or trad, climbing is a style where the leader places removable protection — such as cams and nuts — into cracks and features as they climb, and the follower removes it. It demands gear-placement skill and judgment on top of climbing ability, and leaves the rock free of fixed hardware.