Altura

1 in 4 travelers gets altitude sickness even at moderate altitudes of 1,900–2,900 m (Honigman et al., Annals of Internal Medicine, 1993). La Paz sits at 3,640 m, Uyuni at 3,656 m, and the lagoon circuit goes above 4,800 m. CDC guidance says that above 3,000 m you shouldn't raise your sleeping altitude by more than 500 m a day. Yet booking sites still sell every tour on its own, and it's easy to book Chacaltaya (5,300 m) the day after landing.

A booking website where altitude is a first-class data point: every experience shows its max altitude and route profile, and the whole trip is drawn as a mountain range that warns you when you climb too fast. The fix is one tap: swap the days.

1. Max altitude and a route profile on every experience, plus an altitude filter
2. A trip planner drawn as a mountain range, which flags climbs that come too early
3. A one-tap fix: swap the days and the profile redraws itself
4. A calendar that shows when the salt flat's mirror effect is likely
5. Upfront total price, 20% deposit, mobile ticket and dark mode
6. An operator dashboard

Why draw the trip as a mountain range? Because a list of tours doesn't show the effort. With each day's altitude in view, the mistake jumps out on its own: Chacaltaya at 5,300 m the day after landing. Data shown well prevents a bad trip. Photos: Unsplash.