The first day of practice at Brno turned out to be a day of two halves. The morning was glorious, sunny and relatively warm. Clouds began gathering shortly after lunch, and the first spots of rain started to fall just as FP2 for the Moto3 class came to a close.

The rain grew steadily heavier for the first half of the MotoGP afternoon practice session, easing up and stopping with some ten minutes to go. By the time the Moto2 bikes took to the track, the circuit was already drying, though it only really dried out completely towards the end of Moto2.

The two halves of MotoGP practice showed the same picture, however. Marc Marquez is fast in the wet and fast in the dry, and clearly looking comfortable on the Repsol Honda.

Teammate Dani Pedrosa is also quick in both conditions, though a little closer to Marquez on a wet track than on a dry track. In the dry, Jorge Lorenzo is very close to Marc Marquez, but in the wet, both he and Movistar Yamaha teammate Valentino Rossi are a second off the pace of the Repsols.