| May 2009 | ||||||
| Sunday | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday |
| 1 | 2 | |||||
| Marshalltown | Webster City | |||||
| 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| Mason City | Alta | Bloomfield | Wheatland, MO | |||
| 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| Mason City | Alta | Columbus, NE | Raceway Park (Jefferson, SD) | Webster City | ||
| 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| Mason City | USMTS @ Oskaloosa | USMTS @ Marshalltown | USMTS @ Cresco | USMTS @ Lansing, MN | USMTS @ Deer Creek, MN | |
| 24 | 25 | 26 | 27 | 28 | 29 | 30 |
| Mason City | Deery Brothers @ Boone | Alta | Rockwell City | Fairmont, MN | Webster City | |
| 31 | ||||||
| Mason City | ||||||