Planning a trip to Le Mans in June next anyways.
If it's for the race then start planning asap. If just to see the museum (Boogs is right it's v good) and drive part of the track then don't go anytime near the big race
My brother keeps asking me to join his annual mass expedition there. Channel crossings have to be booked months ahead, they all leave the Sarf East the Thursday before and don't get back til the Tuesday with the intervening nights spent male bonding in a campsite they book a year ahead as it's the bestest
On the upside they all say the racing spectacle is terrific
When they sort a decent fly/train package where you leave Friday sleep in a real bed with your own bog near and back Sunday night I'll go.