From Colorado Ski Country USA, here are the projected opening & closing dates for every place BUT Vail resorts.
2017/18 Opening and Closing Dates
RESORT
OPEN
CLOSE
Arapahoe Basin
Mid-October
Early June
ASPEN MOUNTAIN
November 23
April 15
ASPEN HIGHLANDS
December 9
April 8
BUTTERMILK
December 9
April 8
COOPER
December 9
April 8
COPPER MOUNTAIN
November 10
TBD
CRESTED BUTTE
November 23
April 8
ECHO MOUNTAIN
November 21
April 15
ELDORA
November 17
April 8
GRANBY RANCH
December 15
April 1
HESPERUS
December 15
TBD
HOWELSEN HILL
TBD
TBD
LOVELAND
Mid-October
May 6
MONARCH
November 22
April 8
POWDERHORN
December 15
March 25
PURGATORY
November 18
TBD
SILVERTON
December 28
April 8
SNOWMASS
November 23
April 15
STEAMBOAT
November 22
April 15
SUNLIGHT
TBD
TBD
TELLURIDE
November 23
April 8
WINTER PARK
TBD
TBD
WOLF CREEK
November 3
April 1
2017/18 Opening and Closing Dates
RESORT
OPEN
CLOSE
Arapahoe Basin
Mid-October
Early June
ASPEN MOUNTAIN
November 23
April 15
ASPEN HIGHLANDS
December 9
April 8
BUTTERMILK
December 9
April 8
COOPER
December 9
April 8
COPPER MOUNTAIN
November 10
TBD
CRESTED BUTTE
November 23
April 8
ECHO MOUNTAIN
November 21
April 15
ELDORA
November 17
April 8
GRANBY RANCH
December 15
April 1
HESPERUS
December 15
TBD
HOWELSEN HILL
TBD
TBD
LOVELAND
Mid-October
May 6
MONARCH
November 22
April 8
POWDERHORN
December 15
March 25
PURGATORY
November 18
TBD
SILVERTON
December 28
April 8
SNOWMASS
November 23
April 15
STEAMBOAT
November 22
April 15
SUNLIGHT
TBD
TBD
TELLURIDE
November 23
April 8
WINTER PARK
TBD
TBD
WOLF CREEK
November 3
April 1
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