Opening Day Practice – Tuesday May 14 had the fastest "no-tow" speed on opening day. •
Weather: , Fair •
Summary: The opening day of practice saw all 36 cars turn laps around the circuit. Most drivers needing rookie/refresher testing completed their programs; however, rookie
Patricio O'Ward suffered electrical issues in his car, preventing him from finishing his program.
Fernando Alonso also suffered electrical issues on the day, preventing him taking part in much of the afternoon running. The fastest lap of the day belonged to
Will Power, who turned a lap at , ahead of his
Team Penske teammate
Simon Pagenaud and
Ed Carpenter Racing team boss
Ed Carpenter. The fastest "no-tow" lap belonged to
Ed Jones, who turned a lap at without the aid of drafting. Only one minor incident occurred during the day, when rookie
Colton Herta spun in the warm-up lane in turn 2, though he suffered no damage.
Practice – Wednesday May 15 led the speed chart on Wednesday. •
Weather: , Partly cloudy •
Summary: The second day of practice opened with
Patricio O'Ward completing his rookie test, allowing him to participate in open practice with the other competitors. The day saw the first two crashes of practice for the month. The first came at 12:35 pm, when
Fernando Alonso hit the outside wall in turn three while following
Graham Rahal. The car then slid across the track and hit the barriers on the inside of the north short chute before finally coming to a halt in turn four after tapping the outside wall. Alonso emerged uninjured, but the car was heavily damaged and the team did not return for the remainder of the day's practice. The second incident of the day came at 5:02 p.m. when
Felix Rosenqvist lost control of his car in turn two while following
Colton Herta. Rosenqvist's car spun before hitting the outside barrier, then slid into the tire wall at the inside of the track. Rosenqvist was uninjured, while the car needed significant repairs. Topping the speed charts for the day was
Josef Newgarden who turned a lap at , besting
Scott Dixon and
Spencer Pigot. The fastest "no-tow" lap belonged to
Alexander Rossi, who ran at without the assistance of drafting. The field completed a total of 3,219 laps, with a considerable amount of "pack" racing observed.
Practice – Thursday May 16 led the speed chart for the first time. •
Weather: , Mostly cloudy, thunderstorms late •
Summary: Thursday practice was shortened by 90 minutes due to rain. Despite this, 35 cars turned laps on the day, with only
McLaren Racing being absent, still recovering from their accident the previous day. One major incident occurred at 12:18 p.m. when
Patricio O'Ward lost control of his car in turn two and made heavy contact with the outside wall, sending the car airborne briefly before landing on its wheels and skidding to a halt part way down the backstretch. O'Ward was uninjured, but did not return to the track for the remainder of the day.
Ed Jones was the fastest driver of the day, running a lap at ahead of
Takuma Sato and
Zach Veach. Jones also held the fastest "no-tow" lap at . Only 1,717 laps were completed for the session, down from the previous day. With severe weather approaching the area, at 4:30 p.m. the yellow light was turned on and all cars were called off the track. The teams were sent to the garage area and the session was ended early, anticipating the storm.
Fast Friday Practice – Friday May 17 set the fastest practice lap of the week. •
Weather: , Mostly cloudy early with mid-day thunderstorms, sunny late •
Summary: Boost pressures were increased in preparation for qualifying weekend, leading to higher speeds than previous days. One major incident occurred at roughly noon, when
Kyle Kaiser lost control in turn 3 and impacted the outside wall heavily, causing his car to become airborne briefly before landing upright. The incident placed the entry from
Juncos Racing in doubt as to whether they would be able to appear for qualifying. The day also saw a stoppage due to weather, as lightning in the Speedway area halted running for roughly an hour.
Conor Daly set the fastest time of Fast Friday, running a lap of and besting
Marco Andretti and
Takuma Sato.
Ed Jones headed the "no-tow" ranking for the third time in the week, posting a lap at with no drafting aid. ==Time trials==