Here are a few suggestions for your next trip from Gap(F)

In 2 hours, you can reach Veynes-Devoluy, Aspres-sur-Buech, Chorges, Embrun, Clelles Mens, Monestier de Clermon, Die, Briancon, Château-Arnoux-St-Auban, La Brillanne Oraison...

In 3 hours, you can reach Grenoble, Aix-en-Provence, Romans-Bourg-d-Peage, Gardanne, Saint Antoine (Marseille), Livron, Meyrargues, Pont de Claix, Vif, St Georges de Commiers...

In 4 hours, you can reach Marseille, Septemes, St Joseph le-Castellas.

In 10+ hours, you can reach Paris.