Steamboat Springs Gretchen Sehler made her annual plea Tuesday.
"If we can keep people off the trails for a few more weeks, they'll be in awesome shape," said Sehler, the director of the Steamboat Springs Town Challenge Mountain Bike Series.
Mountain bike trails on Emerald Mountain, Howelsen Hill and the Steamboat Ski Area are not ready to ride.
"I don't know what in the valley is open," Sehler said. "If you are jonesin' to get on your mountain bike, go buy a road bike."
Parts of Mad Creek Trail are dry, and the road to Strawberry Park Hot Springs is clear, but most trails are not dry.
Riders who ignore the city of Steamboat Springs Parks and Recreation Department's closure signs risk damaging the trails.
The fat tires of a mountain bike create ruts in the mud. Those ruts serve as runoff lanes for water, keeping water on the trails and eroding them.
As riders wait for the trails to become rideable, Sehler recommends a road trip for those not interested in road biking.
"Fruita is great riding right now," she said. "Vernal, Utah, has some great stuff."
The Town Challenge early registration party is 5:30 to 7 p.m. Wednesday at the Rio Grande Mexican Restaurant. The first race of the season is the Howelsen Hill Bluffs Circuit on May 24.