yes there are...
2004 COSDRA Race Schedule
Zurich Season Opener Date TBA
Sault Ste Marie August 28 & 29, 2004
Harrowsmith September 4 & 5, 2004
Frankenmuth, Michigan September 18 & 19, 2004
Kitchener, Ontario September 25 & 26, 2004
Onsted, Michigan October 2 & 3, 2004
Akron, New York October 9 & 10, 2004
Birch Run, Michigan October 16 & 17, 2004
2004 PSDGRA Race Schedule
Biedas Powersports World Cup of Grass Drags Fenwick Ontario, Canada August 21 & 22, 2004
Nelsons Snow Motion Greenville Michigan August 27 & 28, 2004
Haydays Lino Lakes Minn September 11 & 12, 2004
Redbud Buchanan Michigan September 25 & 26, 2004
Hastings 500 Hastings, Michigan October 8 - 10, 2004
Potowatami 500 Angola, Indiana October 16 & 17, 2004
PSGDRA/Biedas Powersports Championship Shootout Fenwick Ontario, Canada October 30 & 31, 2004
some links:
Michigan Snowmobile Drag Racing Assoc.
Michigan Cup Snowmobile Grass Drag Races
Pro Snowmobile Grass Drag Racing Assoc