Walking from Seattle to Miami Beach: 2,800 Miles, Several Months, Zero Practicality

You cannot walk from Seattle to Miami Beach as a practical journey. The distance is ~2,800 miles (4,500 km) — coast-to-coast across the contiguous United States.

The Math

Major Obstacles

• Rocky Mountains / Cascades / Sierra Nevada — elevation, snow, passes
• Deserts: Great Basin, Mojave, Sonoran — heat, water, 50-100 mi gaps
• Private Land: No "right to roam"; highways often only legal route
• Interstates: Pedestrians prohibited (I-90, I-80, I-40, I-10)
• Weather: Winter in Rockies/Plains; summer in deserts; hurricane season SE
• Logistics: Food, water, shelter, gear, medical, navigation
• Cost: $5,000-$15,000+ (gear, food, lodging, emergencies)

People Who've Done It (Rare)

• John Francis ("Planetwalker") - 17 years walking US (1973-1990), silent 17 years
• Nate Damm - Delaware to California (2011), 7 months, blogged/booked
• Transcontinental walkers - ~1-2/year complete coast-to-coast

Better Alternatives

• American Discovery Trail (6,800 mi, DE to CA) — hiking/biking route
• East Coast Greenway (3,000 mi, ME to FL) — developing trail system
• Section hike: Appalachian Trail, Pacific Crest Trail, Florida Trail
• Train: Amtrak Coast Starlight + Sunset Limited (~3 days)
• Fly: 5.5 hours, $150-400

Bottom line: Walking Seattle→Miami Beach is a major expedition, not a trip. It requires months of full-time commitment, extensive preparation, and acceptance of real danger. Most who ask this question want a vacation — fly, drive, or train.