The Toronto round scheduled in July was canceled yesterday. No surprise.
https://racer.com/2021/05/14/indycar-cancels-toronto-race-for-2021/
April 18 Barber Motorsports Park
April 25 Streets of St. Petersburg
May 1 Texas Motor Speedway Race 1
May 2 Texas Motor Speedway Race 2
May 15 Indianapolis Motor Speedway (Road Course)
May 30 The 105th Indianapolis 500
June 12 Raceway at Belle Isle Park Race 1
June 13 Raceway at Belle Isle Park Race 2
June 20 Road America
July 4 Mid-Ohio Sports Car Course
August 8 Streets of Nashville
August 14 Indianapolis Motor Speedway (Road Course)
August 21 World Wide Technology Raceway
September 12 Portland International Raceway
September 19 WeatherTech Raceway Laguna Seca
September 26 Streets of Long Beach
I have it on fairly decent authority that the canceled Toronto race will be run at Mid-Ohio as the season closer in October. To be continued...
What is with the multiple trips to Indianapolis...
Lack of alternative tracks or just the owners like running their own track?
Neither
The road course race before the 500 is just there to try and restore a "full month of May" tradition
The August event is a double header with NASCAR and the Brickyard 400.... The NASCAR race was lagging and they think a dual bill with indycars will raise interest
I think the only Indycar race at IMS should be the 500