It’s not a whistle stop, when you’re in one of the Railroad Days fun runs Saturday morning, it’s a whistle start.

The train whistle is used to signal the start of both the children’s 1K race at 8:45 a.m., and the combined 5K and 10K races at 9 a.m.

All 1K finishers receive a medal, and all pre-registered runners will receive a T-shirt. The 1K race is capped at 300 participants.

The 5K and 10K races are chip-timed and USATF-certified courses along the scenic, flat and fast Mill Pond Road, and over the Snoqualmie River. Runners will get stunning views of Mount Si and Meadowbrook Farm before their big finish in front of a cheering crowd on Railroad Avenue.

“It’s hard to find scenic and flat-and-fast in western Washington,” says Sean Sundwall, race organizer.

To view course maps and to register, visit www.runsnoqualmie.com.