Bobby Isaac at Beltsville Speedway
Bobby Isaac has made 5 NASCAR Cup Series starts at Beltsville Speedway since 1968, with 3 wins, 4 top-10s and an average finish of 4.4.
Totals at Beltsville Speedway by series
| Series | Starts | Wins | Top 5 | Top 10 | Laps led | Avg finish | Avg start | Best finish |
|---|---|---|---|---|---|---|---|---|
| Cup Series | 5 | 3 | 4 | 4 | 788 | 4.4 | 3.4 | 1 |
Every start at Beltsville Speedway
| Date | Race | Series | Start | Finish | Laps led | Status |
|---|---|---|---|---|---|---|
| May 15, 1970 | 1970 Beltsville 300 | Grand National Series | 3 | 1 | 271 | Running |
| July 15, 1969 | 1969 Maryland 300 | Grand National Series | 3 | 17 | 47 | Crash |
| May 16, 1969 | 1969 Beltsville 300 | Grand National Series | 1 | 1 | 300 | Running |
| September 13, 1968 | 1968 Maryland 300 | Grand National Series | 3 | 1 | 158 | Running |
| May 17, 1968 | 1968 Beltsville 300 | Grand National Series | 7 | 2 | 12 | Running |