| 5 | | 2nd Annual Windy River Open | B | 04-Apr to 05-Apr-1998 | $57 |
| 17 | | Santa Cruz Masters Cup | A | 24-Apr to 26-Apr-1998 | |
| 2 | | Great Northwest Open | B | 02-May to 03-May-1998 | $155 |
| 1 | | Deschutes Open | B | 13-Jun to 14-Jun-1998 | $275 |
| 2 | | 2nd Annual Nuclear Meltdown | C | 27-Jun to 28-Jun-1998 | $119 |
| 2 | | Fort Steilacoom Open | B | 11-Jul to 12-Jul-1998 | $250 |
| 8 | | Terrace Creek Tardiness Open | C | 19-Jul-1998 | |
| 4 | | Full Sail Open | B | 15-Aug to 16-Aug-1998 | $67 |
| 2 | | Washington State 23rd Annual Championships | C | 12-Sep to 13-Sep-1998 | $125 |
| 9 | | Eugene Celebration | B | 19-Sep to 20-Sep-1998 | |
| 1 | | Northwest Series | XC | 24-Nov-1998 | $135 |
