| IndyCar Series | |
|---|---|
| Venue | Nazareth Speedway |
| Corporatesponsor | Firestone |
| First race | 1987 |
| First ICS race | 2002 |
| Last race | 2004 |
| Distance | 225 miles (362 km) |
| Laps | 225 |
| Previous names | Nazareth 100 (1968–1969, 1982) Bosch Spark Plug Grand Prix (1987–1996) Bosch Spark Plug Grand Prix Presented by Toyota (1997–2000) Lehigh Valley Grand Prix (2001) Firestone Indy 225 (2002–2004) |
| Most wins (driver) | Emerson Fittipaldi (3) |
| Most wins (team) | Penske Racing (7) |
TheFirestone Indy 225 was anIndyCar racing event held atNazareth Speedway from1987–2004. From1987–2001, the event was sanctioned byCART. In2002, the race switched to theIndy Racing League. From1987–1996, the race was scheduled for 200 laps. In1997, the race was lengthened to 225 laps. Rising speeds had led to the races being completed very quickly, and CART officials worried that the fans were not getting their money's worth. The race was discontinued after the track closed permanently in 2004.
Nazareth also hosted theMarlboro Challenge all-star event in 1990 and 1992. IndyCar points racing would not return in Pennsylvania until their return toPocono Raceway in 2013 for the first time since 1989.

| Season | Date | Winning driver | Season | Date | Winning driver |
|---|---|---|---|---|---|
| CARTIndy Lights | SCCA andCARTAtlantic Championship | ||||
| 1987 | September 20 | ||||
| 1988 | September 25 | ||||
| 1989 | September 24 | ||||
| 1990 | October 7 | ||||
| 1991 | October 6 | 1991 | October 6 | ||
| 1992 | October 4 | 1992 | October 3 | ||
| 1993 | September 19 | 1993 | September 18 | ||
| 1994 | September 18 | 1994 | September 17 | ||
| 1995 | April 23 | 1995 | April 22 | ||
| 1996 | April 28 | 1996 | April 27 | ||
| 1997 | April 27 | 1997 | April 26 | ||
| 1998 | April 27 | 1998 | April 25 | ||
| 1999 | May 2 | 1999 | May 1 | ||
| 2000* | No race | 2000* | No race | ||
| 2001 | May 5 | ||||