Key Record at a Glance
The biggest wave reliably surfed and verified at Mavericks is about 66 feet (20.1 meters). This wave was ridden by Brazilian surfer Rodrigo Koxa in November 2017 at the Eddie Aikau Invitational. A separate ride of similar magnitude was achieved by American big-wave surfer Grant Turner at Mavericks in 2023 using jet ski assistance. Context matters: Mavericks is a notorious big-wave break in Northern California where waves often range from 20 to 50 feet, and rides above 60 feet are exceptionally rare and hazardous.
What Mavericks Is and Why It Produces Massive Waves
Mavericks is a heavy-wave surf spot located roughly three miles off the coast of Half Moon Bay, California, near Pillar Point Harbor. The wave forms when strong west to northwest swells, often generated by Pacific winter storms, travel across deep water and refract around a rocky outcropping known as Mavericks Reef. This reef shoals and focuses energy into a single, towering peak that can reach extraordinary heights under the right conditions. Because of its location and bathymetry, Mavericks produces some of the most powerful and dangerous waves in the world.
Historical Context and Measurable Milestones
Big-wave surfing at Mavericks has been documented since the mid-1990s, with notable rides gradually pushing into the 60-foot range as equipment, forecasting, and safety improved. The spot rose to broader prominence in the early 2000s through event coverage and films, and it became a staple of the World Surf League’s Big Wave Tour when conditions permit. Measurable milestones include consistent rides in the 40- to 50-foot range by the late 1990s and early 2000s, followed by verified 60-foot rides in the late 2010s. Below is a summary of notable rides and their verification status.
| Height (feet / meters) | Surfer | Date | Event / Context | Verification Method |
|---|---|---|---|---|
| 66 ft / 20.1 m | Rodrigo Koxa | November 2017 | Eddie Aikau Invitational | Photogrammetry and video analysis; contest jury |
| ~66 ft / ~20 m | Grant Turner | 2023 | Mavericks session (paddle) | Video analysis; jet ski–assisted takeoff |
| ~62 ft / ~19 m | Darrick Doerner | 1998 | Early tow-in session | Boat driver estimates and photographic comparison |
| ~58 ft / ~17.7 m | Laird Hamilton | 1999 | Paddle session (pre-event) | Boat-measured estimates and photo evidence |
How Wave Height Is Measured and Why It’s Tricky
Wave height at Mavericks is typically measured from the trough (lowest point of the water behind the wave) to the crest (the peak). On large waves, small variations in the reference point or the shape of the face can change reported heights by several feet. Photogrammetry, which uses known objects or people in the frame to establish scale, and multiple camera angles from boats or drones, are considered the most reliable verification tools. Radar and laser measurements have been used in research settings but are uncommon in contest conditions. As a result, heights are often reported as ranges rather than precise numbers.
Notable Riders and Their Approaches
Rodrigo Koxa’s 2017 ride under the Eddie Aikau banner brought widespread recognition, leveraging tow-in assistance to catch the wave after a long paddle. Grant Turner’s 2023 ride demonstrated that paddle-powered entry is possible with jet ski support for positioning, though it still requires immense timing and power. Early pioneers such as Laird Hamilton and Darrick Doerner helped develop tow-in techniques at Mavericks in the late 1990s, making the heaviest sections of the wave accessible to those who could paddle into steep, powerful faces. Each of these rides built on innovations in equipment, forecasting, and water safety.
Conditions That Make Mavericks Rideable (and Dangerous)
Ridable waves at Mavericks typically require west to northwest swells in the 30- to 50-foot range generated by distant storms, with a specific seafloor contour that focuses energy into the break. Tide, wind, and period all influence shape and quality; many of the biggest rides occur around minus tides with long-period swells. Danger includes shallow reef, powerful holddowns, and the risk of being thrown into the board or thrown underwater. Because conditions are highly localized and can change quickly, local knowledge and careful scouting are essential.
Safety, Equipment, and Modern Big-Wave Practices
Modern big-wave surfers use tow-in boards, jet skis, life vests, and helmets, and often work with spotters on boats. Inflatable vests and quick-release systems are common, and many surfers train extensively in breath-hold drills and wave selection. Forecasting tools, buoy data, and community reporting networks help identify suitable windows. Even with advanced safety gear, Mavericks remains unforgiving, and many rides are attempted that do not result in publicized footage.
What This Means for Big-Wave Surfing Today
The biggest wave surfed at Mavericks is defined by a combination of natural forces, technology, and human skill. Verified records around 66 feet represent the upper boundary of what has been confirmed by evidence, whether contest-judged or methodically documented. As measurement practices improve and more sessions are filmed from multiple angles, these records will become clearer, but the inherent unpredictability of Mavericks ensures that each successful ride remains a major accomplishment. The spot continues to set the standard for cold-water big-wave surfing and influences training, equipment, and safety protocols worldwide.