Fastest Average Race Speeds

The fastest IndyCar race in history by average speed was the 2014 Pocono race, averaging 202.402 mph. The fastest average winning speed at the Indianapolis 500 was set by Hélio Castroneves in 2021 at 190.690 mph.

Sources

• Indycars are in fact capable of higher "race" speeds than NHRA dragsters - Reddit
• Highest average speed at the Indianapolis 500 | Guinness World Records
• Speed records are meant to be broken. INDYCAR's IR-28 is out to break what Arie Luyendyk set 30 years ago. - Facebook
• Fast. It's what we do. This year's #Indy500 field made history with the fastest field average speed in race history. #INDYCAR // #DEFYEVERYTHING - Facebook
• The Fastest 500s (Part 1) - Doctorindy.com

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