July 1: Boston – Buenos Aires
July 2-4: Buenos Aires
July 5: Buenos Aires – Santiago de Chile (flight)
July 5-21: Santiago de Chile (2-day trip to Valparaiso, July 18-20 trip to Mendoza, Argentina)
July 21-22: Mendoza – Santiago – San Pedro de Atacama (direct, 2 buses, 36 hours)
July 23-25: San Pedro and surroundings (lagunas at 4,000m altitude)
July 26-28: San Pedro (Chile) – Uyuni (Bolivia) (jeep)
July 28/29: Uyuni – La Paz (night bus)
July 29-31: La Paz (day trip to Cerro Chacaltaya, 5,395m)
August 1: La Paz - Copacabana (bus)
August 2: Hike on Isla del Sol, Lake Titicaca (day trip from Copacabana)
August 3: Copacabana (Bolivia) – Puno (Peru) - Cuzco
August 4-9: Cuzco (day trips to Machu Picchu and Valle Sagrada)
August 9/10: Cuzco - Arequipa (night bus)
August 10: Arequipa
August 11: Lima (morning flight from Arequipa)
August 12: Lima – Boston (evening flight)