United States travel guides

Spring and fall are the sweet spots for the flagship national parks. The Grand Canyon is best in the shoulder seasons of March-May and September-November, avoiding extreme inner-canyon summer heat and monsoon storms, while Yosemite peaks in May-June for thundering waterfalls and September-October for clear, quieter conditions. New York City is most pleasant April to June and September to November.

The United States is defined by its national parks. The Grand Canyon, a UNESCO World Heritage Site in Arizona, plunges up to 6,000 feet and offers rim-to-river hiking and multi-day Colorado River rafting through nearly two billion years of exposed rock. Yosemite in California's Sierra Nevada is a world climbing mecca centered on El Capitan's 3,000-foot granite face and the Half Dome cable route, alongside North America's tallest waterfall by volume and the giant sequoias of Mariposa Grove.

Each marquee destination justifies its own block of time: 4-7 days for the Grand Canyon, 4-5 days for Yosemite, and 5-7 days for New York City. The parks are in different states, so most itineraries pair one park with a nearby city, such as the Grand Canyon with Las Vegas about 4.5 hours away or Phoenix at 3.5 hours. Popular lodging and permits book months ahead, with Yosemite campsites filling up to 5 months in advance.

A rental car is essential for the national parks. The Grand Canyon's South Rim is about 90 minutes from Flagstaff airport, with Phoenix and Las Vegas as larger gateways, while Yosemite Valley is 1.5-2 hours from Fresno and 4-5 hours from the San Francisco Bay Area, with winter tire chains required November to March. Inside the parks, free shuttles serve Yosemite Valley and the Grand Canyon rims, and in New York City the 24-hour subway at 2.90 dollars per ride beats driving.

Overnight trips below the Grand Canyon rim require a backcountry permit at 20 dollars per person, applied for up to 4 months ahead, and a bed at Phantom Ranch is allocated by a separate lottery; park entry costs 30 dollars per vehicle for 7 days. In Yosemite, black bears make bear-proof food canisters mandatory for campers and bear spray is strongly recommended on trails. Heat is the other big risk, so canyon hikers should drink 2-3 liters of water daily and avoid midday exertion.