Trackside viewing is a challenge
and
access is difficult.
The end of Avenue Antares is about the only place, inside the circuit, where you can get a glimpse of the cars as they head down at speeds of over 200 mph from Terte Rouge toward the 1st Chicane on the Mulsanne Straight. It is really “external” as it is outside the Ticketing Area, past the tram stop at the Stadium, along Avenue Antares. However, very few people go there, so maybe it is not worth the effort.
There is also an opportunity to hear and, if the green blanking screen has been pulled down, see the cars screaming down the Mulsanne Straight at Auberge des Hunaudieres or Shanghai des 24 Heures restaurants which are situated a couple of hundred yards before the braking zone of the first Chicane, but on the outside of the circuit. They are very heavily booked during the race with corporate events/groups dominating the proceedings, but there is a chance you might get a table during practice and it is worth a drink when there are no Race Cars on the circuit – Friday is a good time.
There are no drivable routes to view the Mulsanne Straight. Most adjacent properties are private and meeting Gendarmes is likely to be involved - best left to the more experienced “serial” Le Mans…..ers! This is the "DARK OPS" you might hear about on Pistonheads Le Mans site.