WATCH: Highlights from Day 1 of pre-season testing in Barcelona

Pre-season testing began in Barcelona on Wednesday when all 10 teams ran their 2020 challengers on track at the Circuit de Barcelona-Catalunya.

For some, it was the very first time the wheels had turned on their new cars. For others who had already done a shakedown run, it was a chance to stretch the legs of the machines they will be racing throughout the new season.

The weather was crisp but sunny, the track was ready, the smattering of fans in the grandstands expectant. Check out the video above to see all the key moments from the first day's running.

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