Finish in the Loire for the shorter version. Paris and a carefully chosen pair of châteaux provide plenty of variety.
Add a second Loire base only if it materially improves access. Otherwise use the extra days to revisit a garden or explore a town.
Every transfer is allocated separately from the sightseeing days. Arrival at the first base and departure from the last are outside this outline.
Paris, Versailles & Chartres
Give the major museum collections, the city itself and any excursion to Versailles or Chartres distinct days. Choose what you want to understand, not simply what you can fit in. A river walk between two neighbourhoods can connect the architecture more effectively than another rushed interior.
Suggested base: Paris. Allow 4 days here.
Loire Valley Châteaux
Choose two or three contrasting residences rather than a long circuit. Compare defensive forms, Renaissance detail, formal gardens and river settings. Keep enough time for the landscape between them, whether explored by local transport, cycle or a carefully chosen driving route.
Suggested base: Tours or Amboise. Allow 3 days here.
Mont Saint-Michel
Spend time watching the relationship between the island and the bay, then explore the village and abbey. An overnight nearby gives more flexibility than a short coach stop. The changing light and tide are part of the experience, but never a reason to improvise a walk across the sands.
Suggested base: Pontorson, the mainland near the Mont, or the Mont itself. Allow 2 days here.