F1 announce 2027 calendar and increase in Sprint rounds

- Sprint: 2 events in the last 90 days
- Previous: 24 days earlier · Russell keeps Sprint lead as Norris fights off Leclerc
What happened
Formula 1 has announced its 2027 calendar and an increase in the number of Sprint weekends from six to 10, with the season starting in Bahrain.
Summary assembled by rule from the sources below