| Race details | |
|---|---|
| 11th round of the 1998 Indy Racing League season | |
 | |
| Date | October 11, 1998 |
| Official name | Las Vegas 500K |
| Location | Las Vegas Motor Speedway |
| Course | Permanent racing facility 1.500 mi / 2.414 km |
| Distance | 208 laps 312.000 mi / 502.115 km |
| Pole position | |
| Driver | Billy Boat (A. J. Foyt Enterprises) |
| Time | 25.167 |
| Fastest lap | |
| Driver | Arie Luyendyk (Treadway Racing) |
| Time | 26.167 (on lap unknown out of 208) |
| Podium | |
| First | Arie Luyendyk (Treadway Racing) |
| Second | Sam Schmidt (LP Racing) |
| Third | Buddy Lazier (Hemelgarn Racing) |
The 1998 Las Vegas 500K was the eleventh and final round of the 1998 Indy Racing League. The race was held on October 11, 1998 at the 1.500 mi (2.414 km) Las Vegas Motor Speedway in Las Vegas, Nevada.