the Truck Series race at Homestead replaced with the Daytona Road Course. The Cup race will expand from 235 miles to 400 km, while the Xfinity (300 km) and Truck (250 km) races will keep their distances from 2020. By May, circuits began removing attendance restrictions. The 62nd Annual Coca-Cola 600 at Charlotte Motor Speedway will be the first circuit to allow a full allotment of spectators. Most circuits than announced grandstands would be fully open to spectators, with NASCAR announcing on 2 June 2021 the last of the circuits still restricted would be fully open, ending NASCAR's pandemic restrictions in grandstands. On 15 May 2021, in the wake of INDYCAR and Formula One cancelling rounds in Canada, Fox Sports writer Bob Pockrass sent a Twitter message saying Camping World Truck Series teams were being prepared in case Canadian Tire Motorsport Park (Mosport), in Bowmanville, Ontario, would have to be cancelled because of Canadian restrictions. Teams are expecting the fall-back plan to have the replacement race as part of the Darlington Raceway Cook Out Southern 500 Cup Series Playoff round in September if that should happen. Darlington in 2020 held their Truck Series race during the afternoon of the Sunday evening race, and already has run the LiftKits4Less.com 200 in May there, which was part of the spring Throwback race weekend. On 25 May 2021, NASCAR formally announced the Mosport race would move to Darlington. 2022 season For 2022, NASCAR returned to regular practice and qualifying sessions, with practice and qualifying groups determined by the metric introduced in 2020 as teams are assigned odd and even based on the metric score. If qualifying cannot be held for any reason, the qualifying metric will replace the traditional owner points-based system. IMSA WeatherTech SportsCar Championship On 12 March 2020, IMSA announced the postponement of the 12 Hours of Sebring after a travel ban was imposed, which also cancelled the FIA World Endurance Championship 1000 miles or 8 Hours race to 11–14 November 2020, making it the final race of the season. Form 18–24 March, IMSA announced the postponement of Mid-Ohio to 25–27 September, cancellation of the Long Beach round when the INDYCAR meeting was cancelled, moving up Laguna Seca to 4–6 September, and Michelin Raceway to 14–17 October. The Laguna Seca date change was designed to allow teams in LMP2 or GTLM to attend the 2020 24 Hours of Le Mans, which