The 2027 Zenith Racing Series Schedule
Zenith Racing Series 2027 will consist of 9 rounds at premier circuits. Every Zenith event will include Endurance racing and Sprint Cup competition. Teams may enter the Endurance event, Sprint Cup, or both formats using the same car. The endurance calendar will include 12-hour races, a special 13-hour event at Sebring, and weekends featuring separate six-hour races on Saturday and Sunday.
What endurance formats will be used?
The confirmed 2027 calendar includes:
12-hour Endurance races (12H)
A special 13-hour race at Sebring (13H)
Weekends featuring two six-hour Endurance races on Saturday and Sunday (6H+6H)
Sprint Cup at every weekend
Which events will have 12-hour races?
Homestead-Miami Speedway
Sebring International Raceway (13H race)
Michelin Raceway Road Atlanta
VIRginia International Raceway
Daytona International Speedway
Which events will have two six-hour races?
Sonoma Raceway
Watkins Glen International
Road America
Event TBA
Will optional testing be available?
Yes — Optional Thursday testing will be available throughout the season and may provide up to seven additional hours of track time.
Pricing, group structure, and registration procedures will be published for each event in the Supplemental Regulations (ESR).
How will a 12H weekend be structured?
Friday will include Practice and Qualifying for all groups.
Saturday will begin with Sprint Cup Race 1, followed by the Endurance 12H Race (estimated to conclude at or just before 11:30pm local time).
Sunday will host Sprint Cup Race 2, a Sprint Re-Qualifying session, and Sprint Cup Races 3-4 (estimated to conclude before 4:00pm local time).
How will a 6H+6H endurance weekend be structured?
Friday will include Practice and Qualifying for all groups.
Saturday will begin with Sprint Cup Race 1 and 2, followed by one-of-two Endurance 6H Race.
Sunday will begin with Sprint Cup Race 3, followed by two-of-two Endurance 6H Race (estimated to conclude before 4:30pm local time).
How will the 13H Sebring WEEKEND be structured?
Sebring will use a dedicated event schedule built around the single 13-hour Endurance race. The complete timetable will be released in the Sebring Supplemental Regulations (ESR).
Can one car compete in Sprint Cup and endurance racing?
Yes — Weekend schedules are structured so the same vehicle can participate in both Sprint Cup and the endurance event. A team may share the car among multiple drivers, give an endurance driver additional race time or build a combined sprint and endurance program around one vehicle.
ZENITH RACING SERIES 2027 CALENDAR
As of 8/10/26. Dates remain subject to change. TBA expected to be announced September 2026.
FEB 05-07 — Homestead-Miami Speedway
12H + Sprint cup weekend — Optional Test Day FEB 04
MAR 05-07 — Sonoma Raceway
6H/6H + SPRINT CUP WEEKEND — OPTIONAL TEST DAY MAR 04
APR 02-04 — Sebring International Raceway
13H SPECIAL + SPRINT CUP WEEKEND — OPTIONAL TEST DAY APR 01
MAY 06-08 — Michelin RACEWAY ROAD ATLANTA
12H + SpRINT cup weekend — optional test day TBA
JUN 04-06 — Watkins Glen International
6H/6H + SPRINT CUP WEEKEND — OPTIONAL TEST DAY JUN 03
JUL 09-11 — VIRginia International Raceway
12H + SpRINT cup weekend — optional test day JUL 08
AUG TBA — Road America
6H/6H + SPRINT CUP WEEKEND — OPTIONAL TEST DAY TBA
SEP TBA — TBA
6H/6H + SPRINT CUP WEEKEND — OPTIONAL TEST DAY TBA
NOV 12-14 — Daytona International Speedway
12H + SpRINT cup weekend — optional test day NOV 11
Competitor Information and Regulations
The Competitor section of the Zenith Racing Series’ website will host the complete 2027 information package as it is released, including:
Sporting Regulations
Technical Regulations
Weekend schedules
Event Supplemental Regulations (ESR)
Tire-deduction formulas
Fuel-capacity procedures
Accepted license requirements
Required equipment/technology information
Registration documents