Key West, FL → Myrtle Beach, SC

Embarking on the 851-mile journey from Key West to Myrtle Beach takes you on one of America's most geographically diverse road trips, spanning nearly the entire Atlantic coastline. You'll begin by traversing the iconic Overseas Highway (US Route 1) northward through the Florida Keys, a uniquely scenic stretch built atop a series of islands and causeways with water visible on both sides of your vehicle. Once you rejoin the mainland near Miami, you'll merge onto Interstate 95, which becomes your primary corridor for the remainder of the drive through Florida, Georgia, and into South Carolina. This major interstate eventually transitions to US Route 17 as you approach the Grand Strand area, finally culminating in Myrtle Beach—a leisurely but relatively straightforward routing that covers significant distance without excessive backtracking.

The landscape transformation throughout this route is dramatic and worth observing. The journey begins in the subtropical, sea-level environs of the Keys and gradually transitions through the flat, developed regions of South Florida's Gold Coast before entering the more rural, piney-woods terrain of central and northern Florida. As you continue northward through Georgia and into South Carolina, you'll notice subtle elevation increases and a shift toward coastal plain geography, with Spanish moss-draped oaks becoming more prominent as you approach the Low Country. The drive is almost entirely flat with negligible elevation changes, making it physically manageable for most drivers.

You'll pass through or near several significant cities and landmarks that offer natural stopping points: the Miami metropolitan area provides good rest opportunities, while Savannah, Georgia represents a notable midpoint with its charming historic character. Further north, you'll approach the Grand Strand area where you can detour slightly to experience Pawleys Island or Georgetown before reaching Myrtle Beach's bustling tourist corridor.

For the most pleasant driving experience, plan this journey during Florida's cooler months from November through March, when temperatures are moderate and tropical afternoon thunderstorms are less frequent. Summer travel presents significant challenges with intense heat, humidity, and afternoon thunderstorms that can impede progress, particularly through Florida. Spring and fall offer reasonable compromises between comfort and season-specific crowding along I-95.

The 851-mile drive from Key West, Florida to Myrtle Beach, South Carolina 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 Key West to Myrtle Beach

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 Key West to Myrtle Beach 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