Indy 500 sõidu traditsiooniks on 33 autot stardijoonel ning kuni kolmapäevani tundus selle arvu täissaamine tänavu võimatuna, kuid tänu Honda, Toyota ja sarja omaniku Tony George rahadele on suudetud osalejate nimekirja meelitada 35 autot.

2004. aasta Indy 500 osalejate nimekiri:

NUMBER/PILOOT/MEESKOND/KERE/MOOTOR/REHVID

1 Scott Dixon Target Chip Ganassi Racing G/T/F
2 Mark Taylor (R) Panther Racing D/C/F
3 Helio Castroneves Marlboro Team Penske D/T/F
4 Tomas Scheckter Panther Racing D/C/F
5 Adrian Fernandez Fernandez Racing G/H/F
6 Sam Hornish Jr Marlboro Team Penske D/T/F
7 Bryan Herta Andretti Green Racing D/H/F
8 Scott Sharp Kelley Racing D/T/F
10 Darren Manning (R) Target Chip Ganassi Racing G/T/F
11 Tony Kanaan Andretti Green Racing D/H/F
12 Tora Takagi Pioneer Mo Nunn Racing D/T/F
13 Greg Ray Access Motorsports G/H/F
14 AJ Foyt IV AJ Foyt Enterprises D/T/F
15 Buddy Rice Rahal/Letterman Racing G/H/F
16 Roger Yasukawa Rahal/Letterman Racing G/H/F
17 LAHTINE Rahal/Letterman Racing G/H/F
18 LAHTINE PDM Racing D/C/F
20 Al Unser Jr. Patrick Racing D/C/F
21 LAHTINE Nunn Racing D/T/F
23 LAHTINE Dreyer & Reinbold Racing D/C/F
24 Robbie Buhl Dreyer & Reinbold Racing D/C/F
25 Marty Roth (R) Roth Racing D/T/F
26 Dan Wheldon Andretti Green Racing D/H/F
27 Dario Franchitti Andretti Green Racing D/H/F
39 Sarah Fisher Kelley Racing D/T/F
41 LAHTINE AJ Foyt Enterprises D/T/F
44 LAHTINE Panther Racing D/C/F
51 Alex Barron Red Bull Cheever Racing D/C/F
52 Ed Carpenter (R) Red Bull Cheever Racing D/C/F
54 LAHTINE Beck Motorsports D/C/F
55 Kosuke Matsuura (R) Super Aguri Fernandez Racing G/H/F
66 LAHTINE Marlboro Team Penske G/T/F
70 Robby Gordon Team Gordon D/C/F
91 LAHTINE Hemelgarn Racing D/C/F
LAHTINE LAHTINE Newman/Haas Racing LAHTINE

G — Gforce, D — Dallara, T — Toyota, H — Honda, C — Chevrolet, F — Firestone