Unit 818 D18 Tournaments Clubs and Sectionals
| Code | | Site | | Code | | Site | | Code | | Site |
| RB1 | | Boise Regional | |
RB2 | | Billings Regional | |
RB3 | | Bozeman Regional | |
| RC1 | | Calgary Regional | |
RC2 | | Casper Regional | |
RE2 | | Edmonton Regional | |
| RG1 | | Great Falls Regional | |
RH1 | | Helena Regional | |
RI1 | | Idaho Falls Regional | |
| RJ1 | | Jackpot Regional | |
RK1 | | Kalispell Regional | |
RL1 | | Lethbridge Regional | |
| RM1 | | Moose Jaw Regional | |
RM2 | | Missoula Regional | |
RO1 | | Bothell Regional | |
| RP1 | | Pocatello Regional | |
RR1 | | Red Deer Regional | |
RR2 | | Regina Regional | |
| RS1 | | Salt Lake City Regional | |
RS2 | | Saskatoon Regional | |
RS3 | | Regional at Sea | |
| RU1 | | Butte Regional | |
RX1 | | D18 NAP | |
RX2 | | D18 GNT | |
| RZ9 | | D18 STaC | |