2020 Formula 1 calendar revealed

The championship initially looked poised to keep its number of grands prix at 21 for next year, but the Spanish GP's one-year extension has led to teams approving the new longest-ever grand prix racing calendar.

The 2020 schedule, which includes the inaugural Vietnam GP and the return of the Dutch GP at Zandvoort, will retain a four-week summer break in August, but will include as many as seven pairs of back-to-back races.

"It's with great pleasure that today we publish the draft 2020 calendar," F1 CEO Chase Carey said.

"It's the year in which the series that is the pinnacle of motorsport celebrates its 70th anniversary with, for the first time, a 22 race calendar.

"It is significant for our sport and confirms our long-term strategy. Since we became involved in this sport in 2017, we have talked about developing new destination cities to broaden the appeal of Formula 1 and at the same time, consolidating our presence in Europe, the traditional home of the sport.

"The season with a record 22 grands prix has received unanimous support from the FIA and all the teams and clearly demonstrates the confidence that exists in the future of our sport."

The new Vietnam race will slot in as the third event of the season on April 5, coming on the heels of an Australia - Bahrain double-header in March.

Zandvoort's race is scheduled for May 3 and will be the Netherlands' first GP since 1985 (pictured above).

That event will kick off the European leg of the season - although this will be broken up by a June double-header made up of the moved Azerbaijan event and the Canadian GP.

The Canada race is now set to clash with the World Endurance Championship's flagship 24 Hours of Le Mans event.

The F1 2020 calendar remains subject to approval by the World Motor Sport Council, while the Italian round at Monza does yet not have a contract in place for next year - but according to F1's statement that is "currently being finalised".

Provisional 2020 F1 calendar