Another reason demand is high? Few outfitters offer trips alongside the Tour to begin with. A list of official operators can be found here; not all of them focus on end-to-end services by which travellers can expect to have top-notch accommodations and guiding. (The list isn't comprehensive; it reflects only operators that pay to have the direct affiliation.)
Trek Travel, the most esteemed company among the Tour's "approved agents," says its Tour de France Alps trip has already sold out. But other itineraries-such as a Pyrenees-focused trip and another that focuses on the Paris finish line experience-still have availability. Butterfield & Robinson, which once offered Tour de France trips, has stopped offering them because of logistical concerns, like high cancellation costs and limited hotel stock.
In other words, book a remaining spot on one of these top-notch trips while they last. There aren't many of them, and they're going fast.
But don't book your airfare until later. According to online travel agency Hopper, which specialises in aviation-data insights and airfare predictions, flights to Paris in July won't vary substantially in price until 48 days before departure. But since summer is a busy season for travel to France, expect to pay a premium for tickets.
As for how to choose among the different types of trips? The Alps and Paris trip is the most popular-partly because of the climactic finale, which allows guests to spend time in the City of Light, and partly because it's the itinerary that spends the most time alongside the Tour itself. (It coincides with a full four legs of the race.) Trek Travel's equivalent trip is also that company's first to sell out.
For diehard cyclists, a mountain stages trip is the next-best option; the physical demands will be challenging, and you'll feel satisfied tackling some of the world's most iconic climbs. And if you're not looking to sweat for a week straight, focus on Paris (or Burgundy), where you're guaranteed a more esoteric trip with luxury hotels and amazing food and wine. Either way, you'll join the diehard cheering squads for at least one leg.
"At the finish line for famous legs, there will be close to 100,000 people cheering, 'allez, allez, allez!'" says Levine about the festive spirit of the Tour. "Watching on your couch is amazing, but being there live? That's the whole deal."