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Kurt Busch seeks to do something this weekend that hasn’t been done in NASCAR.

Run every lap for the most consecutive races to start a season.

Busch enters Sunday’s race at Pocono Raceway on NBCSN having completed all 5,673 laps in the first 20 races. No driver has completed every lap through the the first 21 Cup races in a season.

Busch tied Dale Earnhardt Jr. for the record this past weekend at Indianapolis Motor Speedway when Busch completed every lap on the way to finishing 16th.

Earnhardt set the mark in 2012 by completing every lap in the first 20 races of the season. In the 21st race, which was at Pocono, Earnhardt fell 18 laps short of the distance in the rain-shortened race.

Busch heads to Pocono having won the June race there. In this race a year ago, he finished 37th after he was involved in an accident, He finished 10 laps behind the leaders.

Busch’s consistency this season has led to 15 top-10 finishes, second only to Stewart-Haas Racing teammate Kevin Harvick, who has 16.

Drivers who have run the most laps in Cup this season:

100% — Kurt Busch (5,673 laps)

99.86 — Brad Keselowski (5,665)

99.67 — Trevor Bayne (5,654)

99.38 — Martin Truex Jr. (5,638)

98.71 — Kevin Harvick (5,600)

98.55 — Jamie McMurray (5,591)

98.20 — Austin Dillon (5,571)

97.76 — Landon Cassill (5,546)

97.76 — Matt Kenseth (5,546)

97.48 — Carl Edwards (5,530)

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