Sorry I could not get too specific, but here is what I think...
Time Mile Instruction For Toward
Summary: 298.7 miles (4 hours, 54 minutes)
9:00 AM 0.0 Depart near Atlanta on Ramp (East) 0.3 mi I-20 / Augusta
9:00 AM 0.3 Merge onto I-20 [SR-402] (East) 138.3 mi
10:51 AM 138.5 At I-20 Exit 196A, turn off onto Ramp 0.3 mi
10:51 AM 138.8 Merge onto I-520 [SR-415] (South) 14.5 mi
11:03 AM 153.3 At I-520 Exit 16, turn off onto Ramp 0.4 mi
11:03 AM 153.7 Merge onto SR-28 [Sand Bar Ferry Rd] (South-East) 1.6 mi
11:05 AM 155.2 Entering South Carolina
11:05 AM 155.2 Bear RIGHT (East) onto Sand Bar Ferry Rd 1.9 mi
11:08 AM 157.1 Continue (East) on US-278 [Sand Bar Ferry Rd] 21.5 mi
11:30 AM 178.6 Bear LEFT (East) onto Ramp 0.1 mi
11:30 AM 178.7 Merge onto SR-781 (East) 3.6 mi
11:35 AM 182.3 Continue (East) on US-78 [Charleston Hwy] 37.2 mi
12:13 PM 219.5 Bear RIGHT (South-East) onto SR-61 17.2 mi
12:36 PM 236.7 Turn off onto Ramp 0.3 mi
12:36 PM 236.9 Merge onto I-95 (South) 10.6 mi
12:44 PM 247.5 At I-95 Exit 57, turn off onto Ramp 0.3 mi
12:45 PM 247.8 Merge onto SR-64 [Bells Hwy] (East) 2.1 mi
12:48 PM 249.9 Continue (South) on US-15 [N Jefferies Blvd] 0.3 mi
12:48 PM 250.2 Turn LEFT (East) onto US-17 Alt [Wichman St] 0.8 mi
12:50 PM 251.0 Continue (East) on SR-64 [Padgett Loop] 15.1 mi
1:11 PM 266.1 Bear LEFT (East) onto US-17 6.9 mi
1:18 PM 273.1 Turn RIGHT (South) onto SR-174 [HWY-174] 23.6 mi
1:50 PM 296.6 Turn RIGHT (North-West) onto Lybrand St 0.5 mi
1:51 PM 297.2 Bear LEFT (West) onto Docksite Rd 0.8 mi
1:53 PM 297.9 Bear LEFT (South) onto Fairway Terrace 10 yds
1:53 PM 297.9 Turn LEFT (South-East) onto Fairway Dr 0.8 mi
1:54 PM 298.7 Turn LEFT (West) onto Local road(s) 32 yds
1:54 PM 298.7 Arrive Edisto Beach
SUMMARY
Driving distance: 298.7 miles
Trip duration: 4 hours, 54 minutes
Driving time: 4 hours, 54 minutes
Cost: $24.09
Well, Microsoft Streets and Trips says this...
ByteTheBullet (-: