2018 Roseanne 300
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| Race details | |||
|---|---|---|---|
| Race 5 of 33 of the 2018 NASCAR Xfinity Series | |||
| Date | March 17, 2018 | ||
| Official name | Roseanne 300 | ||
| Location | Fontana, California, Auto Club Speedway | ||
| Course | Permanent racing facility | ||
| Course length | 3.2 km (2 miles) | ||
| Distance | 150 laps, 300 mi (482.803 km) | ||
| Scheduled distance | 150 laps, 300 mi (482.803 km) | ||
| Average speed | 127.283 miles per hour (204.842 km/h) | ||
| Pole position | |||
| Driver | Joe Gibbs Racing | ||
| Time | 39.766 | ||
| Most laps led | |||
| Driver | Joey Logano | Team Penske | |
| Laps | 139 | ||
| Winner | |||
| No. 22 | Joey Logano | Team Penske | |
| Television in the United States | |||
| Network | Fox Sports 1 | ||
| Announcers | Adam Alexander, Michael Waltrip, Brad Keselowski | ||
| Radio in the United States | |||
| Radio | Motor Racing Network | ||
The 2018 Roseanne 300 was the 5th stock car race of the 2018 NASCAR Xfinity Series season, and the 20th iteration of the event. The race was held on Saturday, March 17, 2018, in Fontana, California, at Auto Club Speedway, a 2 miles (3.2 km) permanent D-shaped oval racetrack. The race took the scheduled 150 laps to complete. At race's end, Joey Logano of Team Penske would dominate and win his 29th NASCAR Xfinity Series win of his career and the first of his part-time season.[1] To fill out the podium, Justin Allgaier and Elliott Sadler, both driving for JR Motorsports would finish second and third, respectively.
Entry list

Auto Club Speedway (previously California Speedway) was a two-mile (3.2 km), low-banked, D-shaped oval superspeedway in Fontana, California which hosted NASCAR racing annually from 1997 to 2023. It was also used for open wheel racing events. The racetrack was located near the former locations of Ontario Motor Speedway and Riverside International Raceway. The track was owned and operated by International Speedway Corporation and was the only track owned by ISC to have its naming rights sold. The speedway was served by the nearby Interstate 10 and Interstate 15 freeways as well as a Metrolink station located behind the backstretch.
Practice
First practice
First practice was held on Friday, March 16 at 12:35 PM PST. Christopher Bell of Joe Gibbs Racing would set the fastest lap with a lap of 40.299 and an average speed of 178.664 miles per hour (287.532 km/h).[2]
| Pos. | # | Driver | Team | Make | Time | Speed |
|---|---|---|---|---|---|---|
| 1 | 20 | Christopher Bell | Joe Gibbs Racing | Toyota | 40.299 | 178.664 |
| 2 | 22 | Joey Logano | Team Penske | Ford | 40.431 | 178.081 |
| 3 | 3 | Austin Dillon | Richard Childress Racing | Chevrolet | 40.435 | 178.064 |
| Full first practice results | ||||||
Second and final practice
The second and final practice was held on Friday, 2:35 PM PST. Daniel Hemric of Richard Childress Racing would set the fastest lap with a lap of 40.262 and an average speed of 178.829 miles per hour (287.797 km/h).[2]
| Pos. | # | Driver | Team | Make | Time | Speed |
|---|---|---|---|---|---|---|
| 1 | 21 | Daniel Hemric | Richard Childress Racing | Chevrolet | 40.262 | 178.829 |
| 2 | 22 | Joey Logano | Team Penske | Ford | 40.385 | 178.284 |
| 3 | 42 | John Hunter Nemechek | Chip Ganassi Racing | Chevrolet | 40.391 | 178.258 |
| Full final practice results | ||||||