Greg Biffle NASCAR Xfinity Series results at Loudon
| Year | Race # | Start | Finish | Car # | Sponsor | Engine | Owner | Crew Chief | Qualifying Speed | Laps | X Led | Laps Led | Status | Money | Points |
| 2001 | 12 | 14 | 11 | 60 | Grainger | Ford | | | 128.724 | 199 | 1 | 1 | running | 20306 | 135 |
| 2002 | 11 | 6 | 31 | 60 | Grainger | Ford | | | 128.302 | 76 | 1 | 4 | engine | 17325 | 75 |
| 2004 | 20 | 43 | 30 | 60 | Charter Communications | Ford | | | provisional | 190 | 1 | 26 | running | 13385 | 78 |
| 2005 | 20 | 12 | 31 | 66 | Duraflame | Ford | | | 128.841 | 193 | 0 | 0 | accident | 14295 | 70 |
| 2006 | 20 | 11 | 10 | 16 | Ameriquest Mortgage | Ford | | | 126.825 | 200 | 0 | 0 | running | 18650 | 134 |
| 2007 | 18 | 15 | 7 | 37 | Cub Cadet | Ford | | | 127.808 | 200 | 0 | 0 | running | 17700 | 146 |
| 2008 | 18 | 3 | 19 | 16 | CitiFinancial | Ford | | | 127.117 | 199 | 0 | 0 | running | 17125 | 106 |
| 2009 | 16 | 6 | 7 | 16 | CitiFinancial | Ford | | | 128.074 | 200 | 0 | 0 | running | 18650 | 146 |
