Quebec – October 19, 2026 -- Diego Poncelet Sanchez-Cuenca has ridden a downhill skateboard at 94.34 mph (151.83 km/h), making the 27-year-old from Spain and Switzerland the fastest downhill skateboarder in history. The run took place on Route du Port in Les Éboulements, Quebec, on the same slope where the previous Guinness World Record was set nine years ago.
Poncelet beat a 2017 mark of 91.17 mph
On the afternoon of Sept. 22, with a Guinness judge watching, the two-time World Champion passed the 2017 record of 91.17 mph (143.73 km/h). That mark belonged to his late friend Pete Connolly of England, who also rode on Seismic Skate Systems wheels. Red Bull filmed the run and published the video on Instagram, Facebook, and YouTube on Oct. 15, 2026.
Many elite downhill skaters had considered 150 km/h out of reach. Guinness World Records adjudicator Andrew Glass called the run "one of the most impressive feats I have ever seen."
Custom wheels and ceramic bearings carried the run
Poncelet's sponsors included Red Bull, Porsche, and Prada. For wheels and bearings, he turned to Seismic of Boulder, Colorado. He rolled on Seismic Megawatt wheels and Fullspin Pro Spec bearings. His trucks carried Seismic Defcon bushings, and his deck was covered in Seismic Lokton grip tape.
According to Poncelet, Seismic poured a custom run of Megawatt wheels for the attempt, using a prototype ultra-high-rebound urethane formula. He paired them with the company's ceramic bearings. He says he broke his personal best on his first test run and reached 151.83 km/h only a few runs later.
The Megawatt wheels preview Seismic's newest high-speed urethane compound, which is slated for market introduction early next year.
Bearings were built with a leading bearing factory's engineers
Seismic developed the Fullspin Pro Spec bearings with a team of engineers from one of the world's leading bearing factories. They have extra-tough carbonitrided raceway surfaces and a patented spacing system for precise alignment.
The Lokton grip tape uses ceramic grains that Seismic describes as sharper, tougher, and grippier than those on traditional grip tape. Poncelet said it kept him locked onto the board when there was no room for error. The Defcon bushings, made from Seismic's race urethane, are designed to keep handling calm and predictable at speeds where skateboards tend to wobble.
Seismic founder Daniel Gesmer said pushing skateboard performance to this level requires materials science and mechanical engineering to work in long-term dialogue with rigorous field testing.
Wind tunnel work shaped Poncelet's tuck
Poncelet's preparation also included extensive wind tunnel testing to perfect his tuck, along with specialized strength and mobility training. He also had an aerodynamic helmet, speed suit, and shoes custom developed for the attempt.