Fernando Alonso will test at the Indianapolis Motor Speedway on May 3 ahead of his debut appearance at the Indy 500 at the end of the month.
Alonso is missing the Monaco Grand Prix to compete in a McLaren entry powered by Andretti Autosport and Honda at the Brickyard on May 28. The Spaniard will fly straight from his home race in Barcelona on May 14 to Indianapolis, where he will take part in two weeks' worth of testing before the race itself.
The announcement of Alonso's participation came just six weeks before the event, a period of time which included F1 races in Bahrain, Russia and Spain.