Logano, who is looking to win his first NXS race at the Glen, turned a lap of 122.452 mph. Keselowski, the 2013 winner of this race, ran 122.286 mph.
Daniel Suarez, making his first NXS road-course start, got into trouble early on in the session. He pounded the wall in the inner loop less than 10 minutes into practice, forcing him to a backup for the race.
John Wes Townley also spun, but didn’t hit anything and continued on. He finished practice in 27th with a lap of 116.577 mph.
The practice was the first of two at Watkins Glen for the NXS drivers on Friday. The second will run from 3:30 to 4:25.