The Singapore Grand Prix announced on Tuesday that all three-day Zone 4 walkabout tickets for this year's Formula 1 Singapore Airlines Singapore Grand Prix race are sold out.

The three-day Zone 4 walkabout tickets for the Sep 18-20 event have been a popular option with fans due to excellent vantage points as well as its close proximity to the performance areas of the live acts.

Howevere, a limited number of single-day tickets (single-day Zone 4 Walkabout tickets for Friday, Saturday and Sunday) are available from Singapore GP's website from May 1, 9am. But the promotional tickets ($38 Friday Zone 4 Walkabout tickets and the Bay Grandstand red seats) are only available at Sistic outlets from May 1.

Do note that as May 1 is a public holiday, Sistic outlets open from noon.

The Singapore GP has also rolled out the Bay Grandstand Red seat promotion in conjunction with the SG50 celebrations this year. Bay Grandstand Red ticket holders will receive limited edition goodie bags worth $30 each and with at least two seats purchased, fans stand a chance to win a behind the scenes tour of places like the F1 garages, podium and race control room in September.