Here's the PARR Ride from Coleman PowerSport in Woodbridge to Manassas 
Honda.  This is the long route from their April 27, 1997 Poker Run.

Start at Coleman PowerSport Potomac Mills.

Miles   Action          Route                           and Go (miles)
 0.0    Right           Telegraph Rd                     .4 
 0.4    Left at Light   Prince William Parkway          1.8 
 2.2    Left at 4th Light  Minnieville Rd               3.5 
 5.7    Straight at stop   Minnieville Rd               2.2 
 7.9    Right at stop   234 North                       1.5 
 9.4    Left            646 Aden Rd.                    6.4 
15.8    Left            611 Fleetwod Rd.                3.3 
19.1    Right           611 Sowego Rd.                  1.8
20.9    Right           611 Sowego Rd                   1.6 
22.5    Left at Stop    806 Elk Run Rd                  6.2 
28.7    Straight        806 Elk Run Rd                   .2 
28.9    Bear Left       806 Elk Run Rd                  4.4 
33.3    Straight at Stop  Courtney's Corner Rd          3.4 
36.7    Right at Stop   651 Sumerduck Rd                6.8
43.5    Right before Stop   Citgo Station               1st Stop

 0.0    Left at Stop    Bus 15/29 South                  .9 
 0.9    Left at Stop    15/29 South                     2.2 
 3.1    Right           685 Fleetwood Hts. Rd.          2.3 
 5.4    Straight at Stop  Fleetwood Hts./Auburn Rd      4.3 
 9.7    Left            685 Chestnut Fork Rd            1.3
11.0    Straight at Stop  685 Chestnut Fork Rd          1.2 
12.2    Right at Stop   729 Eggbornsville Rd            2.7 
13.1    Left            638 Cherry Hill Rd              2.2 
15.3    Right at Stop   Sperryville Pike                2.7 
18.0    Left            634 Griffinsburg Rd             2.8 
20.8    Left            637                              .8 
21.6    Right at Stop   644 Reva Rd                     1.0 
22.6    Left            608 Oakland Rd                  2.3 
24.9    Left at Stop    607                              .9 
25.8    Right at Stop   609 at Poorville                7.1 
32.9    Left at Stop    231 South                       5.0 
37.9    Merge Straight  Main St. (Bus 29)                .2 
38.1    Left            Washington St                    .2 
38.3    Left            Check point #2

 0.0    Left out of checkpoint                           .1
 0.1    Left at Lught   29 North                       13.7
13.8    Left at Shell Station  718 Mt. Run Lake Rd      1.9
15.7    Right           641 Gibson Mill Rd.             2.2
17.9    Left at Stop    Sperryville Pike                 .1 
18.0    Right           616 Woodland Church Rd          1.5 
19.5    Right at Stop   638 Cherry Hill Rd              1.3 
20.8    Right at Stop   729 Eggbornsville Rd             .5 
21.3    Left            638 Alum Springs Rd             2.7 
24.0    Straight        633                             2.6 
26.6    Left at Stop    229 Rixeyville Rd               5.1 
31.7    Right           802 Springs Rd                  1.4 
33.1    Left at Stop    Jeffersonton Rd                  .3 
33.4    Right at Stop   802 Springs Rd                  9.1 
42.5    Left at Light   17/29 N    W. Shirley Ave.       .8 
43.3    Straight at Light  17 N Bus. 29 N                .2 
43.5    Right           Checkpoint #3 Texaco Mart

 0.0    Right           29 North                        2.9
 2.9    Right at Light  605 Dumfries Rd                 4.7
 7.6    Right           670 Taylor Rd                    .5
 8.1    Left            667                             2.3
10.4    Right           603 Bastable Mill Rd            3.2 
13.6    Left at Stop    28 North                        2.3 
15.9    Left at Light   667                              .7 
16.6    Bear Right      604 Burwell Rd                  2.8 
19.4    Left at Stop    605 Dumfries Rd                 1.7 
21.1    Right           603 Greenwich Rd                3.4 
24.5    Right at Stop   215 Vint Hill Rd                6.2 
30.7    Left at Light   28 North                        4.4
35.1    Straight at Light  28 North (Cross 234)          .4      
35.5    Left            28 North                         .3
35.8    Left at Light   Sudley Rd                        .1 
35.9    Right at Light  Mathis Ave                       .1 
36.0    Right           Check-in at Manassas Honda

Farthest point is Checkpoint #2 in Madison, VA.