Daffy said:
I made it from Buffalo, NY to Great Mills yesterday in 8 hours 22 min.
That is all.
That sounds about right if you minimize your stops. See the following itinerary from freetrip.com for the route I usually use:
Route Summary
Origination: Buffalo, NY
Destination: Great Mills, MD
This Route Distance: 451 This Route Driving Time: 8:20
Route Preferences: none
Total Trip Distance: 451 Total Trip Driving Time: 8:20
0 0:00 Starting at: Rt 384 Delaware Av & Rt 266 Niagara 451 8:20
Start South on Rt 384 Delaware Av for 0.2mi
0 0:00 Junction With Church St 451 8:20
Turn West on Church St for 0.1mi
0 0:00 Junction With Rt 5 451 8:20
Cont. West on Rt 5 for 0.4mi
1 0:01 Junction With I-190 450 8:19
Turn East on I-190 for 5mi
6 0:06 Junction With I-90 EX# 0 445 8:14
Turn West on I-90 for 4mi
10 0:10 Junction With US 219 EX# 55 441 8:10
Turn South on US 219 for 53mi
53 1:00 Driving Checkpoint: 1 hr 398 7:20
63 1:14 Junction With I-86 Rt 17 388 7:06
Turn East on I-86 Rt 17 for 6mi
69 1:20 Junction With US 219 EX# 23 382 7:00
Turn South on US 219 for 47mi
76 1:28 Entering Pennsylvania (max speed limit 65 mph) 375 6:52
104 2:00 Driving Checkpoint: 2 hrs 347 6:20
116 2:18 Junction With Rt 255 335 6:02
Cont. South on Rt 255 for 28mi
144 2:55 Junction With Rt 153 307 5:25
Cont. South on Rt 153 for 8mi
148 3:00 Driving Checkpoint: 3 hrs 303 5:20
152 3:06 Junction With I-80 299 5:14
Turn East on I-80 for 12mi
165 3:18 Junction With Rt 970 EX# 123 286 5:02
Turn South on Rt 970 for 1.5mi
166 3:20 Junction With US 322 285 5:00
Turn East on US 322 for 11mi
177 3:35 Junction With Rt 350 274 4:45
Turn South on Rt 350 for 14mi
177 3:35 Driving Checkpoint: 2 hrs 274 4:45
191 3:55 Junction With I-99 (US 220) 260 4:25
Cont. South on I-99 (US 220) for 53mi
196 4:00 Driving Checkpoint: 4 hrs 255 4:20
202 4:05 Approaching Vicinity of Altoona PA 249 4:15
244 4:46 Junction With I-70 I-76 PA-Tpk$ 207 3:34
Turn East on I-70 I-76 PA-Tpk$ for 16mi
259 5:00 Driving Checkpoint: 5 hrs 192 3:20
259 5:00 Approaching Vicinity of Breezewood PA 192 3:20
Cont. East on I-70 for 76mi
283 5:23 Entering Maryland (max speed limit 65 mph) 168 2:57
309 5:47 Approaching Vicinity of Hagerstown MD 142 2:33
321 6:00 Driving Checkpoint: 6 hrs 130 2:20
336 6:13 Junction With I-270 EX# 53 115 2:07
Turn South on I-270 for 33mi
362 6:37 Approaching Vicinity of Washington DC 89 1:43
369 6:44 Junction With I-495 EX# 0 82 1:36
Turn East on I-495 for 28mi
385 7:00 Driving Checkpoint: 7 hrs 66 1:20
397 7:09 Junction With Rt 5 Branch Av EX# 7 54 1:11
Turn South on Rt 5 Branch Av for 4mi
Cont. South on Rt 5 for 5mi
406 7:23 Junction With US 301 45 0:57
Cont. South on US 301 for 2.7mi
409 7:26 Junction With Rt 205 42 0:54
Cont. South on Rt 205 for 3mi
412 7:30 Junction With Rt 5 39 0:50
Cont. South on Rt 5 for 17mi
429 7:52 Junction With Rt 235 22 0:28
Cont. South on Rt 235 for 19mi
436 8:00 Driving Checkpoint: 8 hrs 15 0:20
448 8:15 Junction With Rt 246 3 0:05
Turn West on Rt 246 for 3mi
451 8:20 Ending at: Rt 5 & Rt 246