Myrtle Beach, SC → Key West, FL

Your journey from Myrtle Beach to Key West spans roughly 851 miles of pure American driving adventure, taking you through three distinct states and multiple ecosystems. From the South Carolina coast, you'll head southwest primarily via Interstate 95 and US Route 17, merging onto Interstate 4 as you approach Florida's interior before transitioning to US Route 441 and eventually the iconic US Route 1. This routing takes you through the heart of the Southeast, transitioning from Atlantic coastal plains into Florida's interior and ultimately along its famous Keys. The drive typically requires between 14 to 16 hours of actual driving time, though most travelers prefer breaking it into two or even three days to fully experience the changing landscape.

As you drive deeper into Florida, the terrain undergoes a fascinating transformation. The first several hours feature relatively flat coastal lowlands and pine forests characteristic of the Carolinas and northern Florida, with minimal elevation changes. Once you pass through central Florida near cities like Ocala and Dade City, the landscape becomes increasingly subtropical, with palmetto scrub, wetlands, and the beginning of mangrove ecosystems. By the time you reach the Miami area and the Florida Keys themselves, you're in truly tropical terrain—swamps gradually give way to a unique archipelago connected by the Overseas Highway, where the Atlantic Ocean and Gulf of Mexico blur the line between land and sea.

Your route carries you through several notable urban centers that break up the driving monotony. You'll pass through or near Jacksonville, Tampa, and the Miami metropolitan area, each offering opportunities for fuel stops, meals, and brief exploration. The final stretch along US Route 1 through the Keys—from Key Largo to Key West—ranks among America's most scenic drives, with water views dominating both sides of the road as you island-hop southward.

The ideal time for this drive is late fall through early spring when Florida temperatures remain pleasant and humidity is lower. Summer heat and afternoon thunderstorms can make the drive uncomfortable, while hurricane season (June through November) occasionally disrupts travel plans along the Keys. Winter months bring the most comfortable driving conditions and the fewest weather-related delays.

The 851-mile drive from Myrtle Beach, South Carolina to Key West, Florida takes approximately 14h 16m under normal conditions. Weather along this route can vary significantly, especially along coastal regions where fog and marine weather can impact visibility. Route Outlook helps you find the safest time to travel by showing you weather conditions at every point along your route, timed to when you'll actually be there.

Common Weather Hazards on This Route

• Severe thunderstorms and flash flooding (spring and summer)
• Hurricane and tropical storm impacts (June through November)

Seasonal Driving Considerations

Coastal weather on this route can shift quickly. Marine fog is common during morning hours, especially in spring and fall, reducing visibility to near zero. Hurricane season (June through November) can bring extended road closures and dangerous conditions. During fair weather, coastal routes offer scenic driving — but always verify conditions with live traffic cameras before heading out.

Best Time to Drive Myrtle Beach to Key West

For long drives like this 851-mile journey, planning is essential. Consider breaking the trip into segments if weather looks challenging. The best approach is to check conditions for multiple departure times using Route Outlook's optimizer, which considers weather at each point when you'll actually be there.

Driving Strategy

Covering 851 miles from Myrtle Beach to Key West is a full-day or multi-day drive that requires advance planning. Break the route into manageable segments, planning fuel and rest stops every 2-3 hours. Weather that looks fine at departure may deteriorate significantly at the midpoint. Consider booking overnight accommodation if the forecast shows deteriorating conditions in the latter half. Route Outlook's segment-level weather data helps you identify exactly where and when conditions will change.

Frequently Asked Questions