The Frenchman, riding the Ajo Derbi, ended the session just 0.04s ahead of championship leader Nico Terol. The pair clashed exiting the final corner in Barcelona with Zarco penalised and missing out on his first Grand Prix victory as a result. This morning however, he looked to be in fine form and ready to challenge again for victory.
It was interesting that he set the fastest time while being almost 10 kmp/h slower through the speed trap, 18th fastest on average. With Silverstone the fastest circuit on the calendar the team will need to find some top speed otherwise Zarco will be under severe during the race.
Terol looked as steady as ever with the Spaniard keen not to show his hand for much of the session before upping the ante in the final five minutes as the circuit improved. With sportscars having raced here last weekend there is clearly quite a margin for improvements in grip from the track.
Sergio Gadea was third fastest but almost half a second adrift of Zarco with Maverick Vinales a further 0.3s slower.
Danny Webb impressed aboard the Mahindra to set the eight fastest time of the session and ended up the leading home rider. Danny Kent was 13th fastest one place, but 0.8s slower, behind his team-mate, Jonas Folger. Kent crashed with 15 minutes remaining in the session.