The premier class had to wait to explore Aragon due to track temperatures being under 10 degrees but during the half hour delay, sun warmed the surface sufficiently - just about - for Michelin to be happy to unleash the beasts. The happiest of said beasts seemed to be the Yamahas, with Maverick Vinales, Franco Morbidelli and Fabio Quartararo in charge of the timesheets as the pace was hotting up in the closing stages of FP1. Home favourite Vinales remained the fastest man of the morning as the checkered flag got waved but he wasn’t spared of the curse of turn 14. Vinales got away with a hairy moment but Morbidelli wasn’t that lucky and crashed out on his final run. Quartararo also suffered a pretty painful looking crash on his final flying lap, although his was at turn 8. Regardless, the Petronas teammates kept their top three positions on the timesheets.
Another man who visited the gravel trap, in his case at turn 2, was Le Mans podium man Alex Marquez, who then rejoined to climb into fourth, ahead of Honda colleague Takaaki Nakagami. Joan Mir in sixth place was half a second off top spot and narrowly ahead of early session leader Pol Espargaro. Cal Crutchlow, Alex Rins and Aleix Espargaro completed the top ten as the final riders to post a time within a second of Vinales.
The unhappiest with the cold windy conditions seemed to be Ducati, the factory bikes spending most of the session outside of the top 15. Jack Miller eventually made the jump to 12th, with Danilo Petrucci 15th, Andrea Dovizioso 17th and Pecco Bagnaia last, behind Johann Zarco, who had crashed early on at busy turn 14.