2026 IMSA Calendar: Race Schedule, Dates and Locations

Updated

The 2026 IMSA calendar is part of a combined motorsport schedule on raceweek.io, which lists 364 events across 34 series. IMSA appears alongside F1, WEC, MotoGP, IndyCar, NASCAR, WRC, DTM and others in a single filterable calendar, so you can view IMSA rounds on their own or in context with the rest of the season. Session times are shown in your local timezone, which matters for IMSA because several of its marquee races run long into the night.

What the 2026 IMSA season covers

IMSA is the North American sports car championship, and its season is built around endurance classics plus sprint rounds. In the raceweek.io calendar it sits within the endurance and GT group of series, next to WEC, ELMS and the 24H Series.

The series fields multiple classes in the same race, most prominently:

  • GTP — the top prototype class, headlining the overall fight for victory.
  • GTD — production-based GT cars, split into Pro and Pro-Am style entries depending on the event.

Because both classes race together, a single IMSA round gives you two races in one: the overall prototype battle and the class fight within GT.

Key events and how to place them in the season

The two races that anchor most IMSA seasons are the Rolex 24 at Daytona and the 12 Hours of Sebring. Both are long-format endurance events where the calendar's local-timezone display is most useful, since the start and finish can fall outside normal viewing hours depending on where you are.

A practical way to plan around them:

  1. Open the IMSA filter on raceweek.io so only IMSA rounds are shown.
  2. Scan the season in date order — the endurance classics typically open the year, with sprint and mid-length rounds following.
  3. Check each event's session times in your own timezone before committing to watch, especially for the 24-hour race.

How to view and filter the IMSA schedule

The calendar is designed to answer "what's racing this week" as well as to show a full season. For IMSA specifically:

  • Filter by series to isolate IMSA from the other 33 championships.
  • Sort chronologically to see rounds in the order they run.
  • Switch language if you want the schedule in a language other than English — the calendar is multilingual.
  • Rely on the local-timezone conversion rather than converting session times yourself.

This is the main advantage of a combined calendar over a single-series schedule: you can see when an IMSA round clashes with, or sits close to, a WEC or F1 weekend, which is useful if you follow more than one series.

What to confirm before the season

The raceweek.io listing confirms IMSA as one of the 34 series in the 2026 calendar and confirms the calendar is filterable, multilingual and updated. It does not, in the material available here, spell out every individual IMSA round, date and circuit. For the exact per-round dates and track names, use the IMSA filter on the calendar itself, where each event carries its own date and location and session times are converted to your timezone.

If your goal is to follow the full season, start with the two endurance classics, then work through the remaining rounds in date order using the filter. If your goal is simply to know what's on this week, the same calendar answers that directly once IMSA is selected.