The Monegasque driver ended Friday in third place in both sessions, 0.6s down on Valtteri Bottas' best at the end of the day.
Speaking afterwards, Leclerc indicated that the team had enjoyed a positive start to the French Grand Prix weekend despite appearing so far away on the stopwatch.
“I am generally happy with how our sessions went today," he said.
"The feeling in the car was good and we tested some new parts. We are confident but we still have a lot of work ahead of us to put the car in the best condition for a strong qualifying.
"Our competitors are strong and we must focus on ourselves to really put everything together for tomorrow. It was fun to drive on this circuit again.
"It is a bit of a different track to the others because the walls are so far away that you can push and try more during practice. I look forward to being back in the car tomorrow morning.”