On hot days, lightweight, light-colored clothing will be most comfortable. But pack a sweater, jacket, and rain gear for when the weather turns cold or wet. Sneakers or walking shoes are best for touring historic sites, but toss in a pair of lightweight hiking boots and sport sandals.
Casual clothing is appropriate everywhere along the trail.
Don't forget a swimsuit, sun block, and wide-brimmed hat. Campers should make sure their gear is waterproof and able to stand up to high winds. A ground cloth and extra tent stakes are good ideas. Travelers hoping to preserve their trip in pictures should include a wide-angle lens and polarizing filter for the high, wide horizons and beautiful skies. Binoculars might come in handy, as will books and travel games.