
The pole victory was Castroneves' sixth of the season and 23rd of his IndyCar career.
"This team is fantastic, they never let me down," said a happy Castroneves. "We've been struggling a little bit."
Starting alongside Castroneves will be Danica Patrick who posted a second-best time of 1:07.1257.
"This is by far the best that I've done on a road course," said Patrick. "I'm really proud of the team. It feels good to have the Motorola car in the front row, not on an oval, but on a road course."
Tony Kanaan (1:07.1757) and Marco Andretti (1:07.3931) will start in row two.
Andretti was quickest in the one-lap preliminary qualifying session and led Dario Franchitti, Kanaan, Scott Dixon, Patrick and Castroneves in the six- person "Firestone Fast Six" shootout.
But it was Castroneves who laid down the best lap and though everyone took a shot at the time, no one could surpass it.
Dixon, starting sixth, so far this year has a win (Watkins Glen) and a second place (St. Petersburg) in two road course starts. It's not a fluke either. In 2006 Dixon earned a first, second and fourth in the three road course events.
Dixon seeks to improve on last year's fourth-place overall finish. In 2006 he collected two wins and nine top-fives. He already has those numbers in 2007 with still six races left on the schedule and is working on a two-race win streak.
"To come back and repeat at both (Watkins Glen and Nashville) is fantastic," said Dixon. "To be honest, things seem to come a little easier for me. I think it is a confidence level. Coming into these two races that were back to back, we've proven ourselves (at Nashville) last year, so you do come into a race weekend with more confidence."
Series points leader Franchitti has made the most starts at Mid-Ohio, but has little success to show for it. In six starts, Franchitti has just one top-10 (third in 1999) and finished 16th or lower four times.
The IndyCar driver with the most success on the 2.258-mile circuit is Castroneves. In four CART starts between 1998-2001 the Brazilian collected three top-10s including back-to-back wins in 2000 and 2001.
The race is set to drop the green flag on Sunday at 1:30 p.m. (et).