Five riders, no reserves, 25 heats.
From http://www.fim.ch/EN/rules/Sportifs/ccpGP/2008/078_en.pdf
SPEEDWAY WORLD CUP RACE FORMAT
HEAT
RED BLUE WHITE YELLOW/BLACK
No TEAM TEAM TEAM TEAM
Riding N°/Gate Riding N°/Gate Riding N°/Gate Riding N°/Gate
01 1/3 1/1 1/2 1/4
02 2/1 2/2 2/3 2/4
03 3/1 3/4 3/2 3/3
04 4/4 4/1 4/2 4/3
05 5/3 5/4 5/2 5/1
Track Grading
06 1/4 5/1 4/3 3/2
07 2/4 1/1 5/3 4/2
08 3/2 2/1 1/4 5/3
09 4/1 3/2 2/4 1/3
10 5/4 4/3 3/2 2/1
Track Grading
11 1/2 2/3 3/1 4/4
12 2/3 3/1 4/2 5/4
13 3/3 4/4 5/1 1/2
14 4/3 5/2 1/1 2/4
15 5/1 1/3 2/2 3/4
Track Grading & Interval
16 1/1 3/3 5/4 2/2
17 2/1 4/3 1/4 3/2
18 3/2 5/4 2/1 4/3
19 4/1 1/4 3/3 5/2
20 5/2 2/3 4/4 1/1
Track Grading
21 1/3 4/2 2/1 5/4
22 2/2 5/3 3/4 1/1
23 3/4 1/2 4/1 2/3
24 4/2 2/4 5/3 3/1
25 5/4 3/2 1/3 4/1