The 2017 UNOH 175 was the 17th stock car race of the 2017 NASCAR Camping World Truck Series, the first race of the 2017 NASCAR Camping World Truck Series playoffs, the first race of the Round of 8, and the 20th and final iteration of the event. The race was held on Saturday, September 23, 2017, in Loudon, New Hampshire at New Hampshire Motor Speedway, a 1.058 miles (1.703 km) permanent oval-shaped racetrack. The race took the scheduled 175 laps to complete. At race's end, Christopher Bell, driving for Kyle Busch Motorsports, would win both stages, and lead 73 laps of the race to earn his 7th career NASCAR Camping World Truck Series win, and his fifth of the season. He would also earn a spot in the next round of the playoffs.^[1] To fill out the podium, Ryan Truex of Hattori Racing Enterprises and Todd Gilliland of Kyle Busch Motorsports would finish second and third, respectively.

The race was held at New Hampshire Motor Speedway, which is a 1.058-mile (1.703 km) oval speedway located in Loudon, New Hampshire, which has hosted NASCAR racing annually since 1990, as well as the longest-running motorcycle race in North America, the Loudon Classic. Nicknamed "The Magic Mile", the speedway is often converted into a 1.6-mile (2.6 km) road course, which includes much of the oval.

The track was originally the site of Bryar Motorsports Park before being purchased and redeveloped by Bob Bahre. The track is currently one of eight major NASCAR tracks owned and operated by Speedway Motorsports.

Qualifying was held on Saturday, September 23, at 10:05 AM EST.^[2] Since New Hampshire Motor Speedway is under 1.5 miles (2.4 km), the qualifying system was a multi-car system that included three rounds. The first round was 15 minutes, where every driver would be able to set a lap within the 15 minutes. Then, the second round would consist of the fastest 24 cars in Round 1, and drivers would have 10 minutes to set a lap. Round 3 consisted of the fastest 12 drivers from Round 2, and the drivers would have 5 minutes to set a time. Whoever was fastest in Round 3 would win the pole.^[5]

Noah Gragson of Kyle Busch Motorsports would win the pole after advancing from both preliminary rounds and setting the fastest lap in Round 3, with a time of 28.896 and an average speed of 131.811 mph (212.129 km/h).^[6]

Stage 1 Laps: 55

Stage 2 Laps: 55

Stage 3 Laps: 65