CYCLING -- Bicyclists can relax until spring before planning most of their 2015 cycling season, with help from The Spokesman-Review's 2015 Northwest Bicycling Events Calendar.

But the following popular winter, spring and summer rides come and go, or in a few cases, came and went, before you knew it. They're popularity causes them to sell out so quickly you have to be planning or making your application in February.

Act now on rides that still have openings.

Chilly Hilly: Feb. 22, COMPLETED, traditionally the region’s first notable cycling events of the season. The 42nd annual event starts with an early-morning ferry ride from Seattle before unleashing cyclists on a 33-mile route around Bainbridge Island that bags 2,675 feet of cumulative elevation. Put it on your list to start the 2016 season. Organized by the Cascade Bicycle Club; cascade.org.

STOKR: Scenic Tour of the Kootenai River, May 9-10, SOLD OUT, has ride-length options ranging from 37 to 98 miles each day along the Kootenai River and Lake Koocanusa out of Libby, Mont., to benefit Habitat for Humanity. Registration open Feb. 14-28 for the lottery drawing to select 450 riders; libbymt.com/events.

Mazama Ride, June 20-21: SOLD OUT, runs 75 miles each day on North Cascades Highway from Marblemount to Mazama for the overnight and back, by Redmond Cycling Club. $145-$195; redmondcyclingclub.org.

RATPOD: Ride Around the Pioneers in One Day, June 27, STILL OPEN, the 14th annual one-day, 130-mile ride from Dillon, Mont., through the Big Hole Valley of southwestern Montana, along wilderness areas and above the Big Hole River, fundraiser to benefit Camp Mak-A-Dream. Online registration opened March 3 and will continue until cap of 650 riders is reached; ratpod.org.

STP: Seattle to Portland Bicycle Classic, July 11-12, SOLD OUT BUT OPTIONS POSSIBLE, the largest multiday bicycle event in the Northwest, has riders pedaling 200 miles from Seattle to Portland in one or two days. Registration opened in January Cascade Bicycle Club members; and in February for nonmembers. The 10,000-rider limit has been reached in February in the past, but it sold out this year on March 8. Check website on June 1 for possible reopening of registration to fill refunded spaces; cascade.org.

RAMROD: July 30, LOTTERY ENTRY CLOSES MARCH 31. Ride Around Mount Rainier in One Day, a premiere one-day ultra-marathon cycling event by the Redmond Cycling Club, 10,000 feet of climbing in 168 miles. $95; redmondcyclingclub.org.

RSVP2:  Aug. 15-16, STILL OPEN, Cascade Bicycle Club ride from Seattle to Vancouver and Party, 106 miles on day 1 and 82 miles on day 2 into Canada. Return by chartered bus. The RSVP1 leaves a day earlier, but is already sold out. $150; cascade.org.

Cycle Oregon: Sept. 12-19, STILL OPEN, billed as “the best bike ride in America,” the ultra-supported tour moves to a different route each year supported by local communities. A spin-off weekend event is set for July 10-12. The 2015 routes will be in the Hells Canyon-Wallowas area. Fills quickly; cycleoregon.com.

WaCanId Ride: Sept. 14-19, STILL OPEN, the annual international tour on paved roads encircling the Selkirk Mountains of Washington, Canada and Idaho. The six-day event covers 350 miles, North America’s longest free ferry ride and includes sag support and the services of seven Rotary Clubs. Space limited; (888) 823-2626, www.wacanid.org.