It set off from Paris on 24 January 1564 (a year after he reached his legal majority) and returned there on 1 May 1566.
Accompanied by his family and Catherine as queen-mother, the king covered nearly 4000 kilometres around the remotest border areas of the kingdom, starting in the east, running along the eastern frontier as far as Provence before turning west, reaching the Atlantic Ocean in Gascony, then moving back up the Loire Valley and finishing in the Bourbonnais.
His entourage was around 15,000 strong, including a military escort, his privy council, servants carrying his tapestries, coffers and other furniture, artisans, princes and ambassadors.
It was a staged display of royal power in the wake of the first war of religion, to compensate for the throne's weakness in the provinces and to forge the kingdom's unity around himself by strengthening ties of loyalty to the monarchy.
On each leg of the journey his fore-runners had a rush to find lodgings for him - in the large towns he slept in the town-house of that city's richest citizen (who had to move out during the King's stay), but more often he slept in inns.