O'Reilly Series Preview
NASCAR O'Reilly Auto Parts Series Race at Chicagoland
Chicagoland Speedway 200 300 mi intermediate CW · 5:30 PM ET
1.5
asphalt
Race Date
Saturday, July 4, 2026
5:30 PM ET
Track Type Tendencies
intermediate
Intermediate tracks like Chicagoland Speedway reward the complete package — car setup, pit strategy, and driver consistency all factor in. These are the races where elite teams separate themselves.
Track position and tire management are critical, especially in long green-flag runs.