Sleep Calculator
Bedtime Sleep Calculator
Find your ideal bedtime in seconds using 90-minute sleep cycle science. Free, no sign-up.
Full 2026 IMSA WeatherTech SportsCar Championship coverage. Official stream guide, live lap updates, race schedule, driver standings and everything you need to follow all 11 rounds from Daytona to Petit Le Mans.
All official broadcast partners and legal streaming options for every IMSA race weekend in 2026.
All 11 rounds of the 2026 IMSA WeatherTech SportsCar Championship. Michelin Endurance Cup rounds marked separately.
| Rnd | Race | Circuit | Date | Length | Status | Watch |
|---|---|---|---|---|---|---|
| R1 | Rolex 24 at Daytona Endurance | Daytona Int. Speedway, FL | Jan 21–25 | 24 Hours | Completed | Replay |
| R2 | Mobil 1 Twelve Hours of Sebring Endurance | Sebring Int. Raceway, FL | Mar 18–21 | 12 Hours | Completed | Replay |
| R3 | Acura Grand Prix of Long Beach | Long Beach Street Circuit, CA | Apr 17–18 | 100 Min | Completed | Replay |
| R4 | StubHub Monterey SportsCar Championship | WeatherTech Raceway Laguna Seca, CA | May 1–3 | 2h 40m | Completed | Replay |
| R5 | Chevrolet Detroit Sports Car Classic Next | Detroit Street Circuit, MI | May 29–30 | 100 Min | Up Next | Watch Live |
| R6 | Sahlen's Six Hours of The Glen Endurance | Watkins Glen International, NY | Jun 25–28 | 6 Hours | Upcoming | Watch |
| R7 | Canadian Tire Motorsport Park | CTMP, Ontario, Canada | Jul 10–12 | 2h 40m | Upcoming | Watch |
| R8 | Motul SportsCar Endurance Grand Prix Endurance | Road America, WI | Jul 30 – Aug 2 | 6 Hours | Upcoming | Watch |
| R9 | Michelin GT Challenge at VIR | VIRginia Int. Raceway, VA | Aug 20–23 | GT Only | Upcoming | Watch |
| R10 | IMSA Battle on the Bricks | Indianapolis Motor Speedway, IN | Sep 18–20 | 2h 40m | Upcoming | Watch |
| R11 | Motul Petit Le Mans Endurance | Road Atlanta, GA | Oct 1–3 | 10 Hours | Season Final | Watch |
The championship contenders and fan favourites across GTP and GTD Pro classes in the 2026 IMSA season.
IMSA endurance races are 6, 10, 12 and 24 hours long. Some start late, some run through the night. Planning your sleep schedule around race coverage means you can stay alert for every key moment without destroying your week. This is exactly what our bedtime sleep calculator helps you do.
The Rolex 24 at Daytona starts at 1:40 PM ET and runs through the night. If you want to be alert for the dawn stint and the final hour push, a bedtime sleep calculator tells you exactly when to sleep and when to wake so your alarm lands at the end of a 90-minute cycle rather than in deep sleep.
The Daytona 24 starts at 1:40 PM ET. To be alert for the night stints at 2 AM and 6 AM, use a bedtime calculator to plan two sleep windows: 9 PM to 1 AM (4 cycles) and 6:30 AM to 10 AM (3 cycles). You catch both the night drama and the morning shootout without running on empty.
The Glen's 6-hour race typically starts around 10 AM ET. A 90-minute nap the afternoon before at 2 PM gives you a full cycle of recovery so your alertness peaks right at the green flag. Set your bedtime for 11 PM the night before using our calculator for a clean 7.5 hours.
Road Atlanta's 10-hour finale starts at 10:10 AM and runs into darkness. Sleep professionals recommend banking sleep before major events. Our sleep calculator lets you find a bedtime that puts you through five full 90-minute cycles so you hit race morning in the lightest stage of sleep, not deep N3.
Products used by motorsport fans who follow long-distance endurance races across multiple time zones and still function the next day.
Everything you need to know about watching, following and planning around the 2026 IMSA SportsCar season.