NASCAR practice speeds, lap averages and notes for the 2025 Mobil 1 301 at New Hampshire Motor Speedway (Loudon). Use the NASCAR stats and data to build DFS lineups on DraftKings. William Byron was fastest.

The NASCAR Cup Series ran a single practice session at New Hampshire Motor Speedway (Loudon) on Saturday afternoon in preparation for the upcoming Mobil 1 301 on Sunday afternoon.

The 36-car field was split into two groups for practice, with each group getting 25 minutes on track.

Below you will find the two groups, key notes from the practice session, as well as the practice speeds for all drivers. Featured Promo: Get any DFS Premium Bundle for for 30% off using code WIN! Win more with expert advice from proven winners and exclusive DFS tools. Get instant access to RotoBalle

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