
From the Organizer
IMPORTANT FOR 2026: Damage to the Iron Horse trail from the December floods mean that no events are being held there in 2026, including the Iron Horse Half. Our course has been re-routed to adjust to this. The new course is a modified out and back, point-to-point route. While it is no longer downhill for the first 10 miles, the incline is mild and limited to the first few miles.
Check out our Bundle/Save
VIRTUAL RACE INFO - We have 40 spots for virtual runners. Once they sell out there are no more available. You can run the distance all at once or break it up into chunks and run it on the date of your choosing. You will receive a shirt and medal that will be mailed after the in person race.
Events
Weather
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
68°
Typical Low
50°
Chance of Rain
32%
Based on US Climate Normals data from Cedar Lake, 4 mi from the venue.
Host City
Elevation
499 ft
Nearest Airport
BFI
King County International Airport - Boeing Field · 26 mi
Major Hub
SEA
Seattle–Tacoma International Airport · 26 mi
Time Zone
Pacific Time
From Endurance Grid
Line up lodging and travel early to lock in your race weekend.
Race Location
Your Next Start Line
Every finish line starts with a single decision. Claim your spot at Iron Horse Half Marathon, put it on the calendar, and turn “someday” into a start date.
83
Days to train
Coming Up
Super Hyak Marathon and Half
Less than a mile away
Fall City Day Run 2026
9 miles away
Bare Buns Fun Run
12 miles away
Blake Pottle Foundation: Opt Outside to Fight Cancer Run/Walk 5K and Kids 1K
Less than a mile away
From Endurance Grid
Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.
The half marathon is the distance where you find out what you're actually made of. Long enough to demand real preparation. Short enough that it doesn't consume your life to train for it. Most people who run their first half describe it as the race that changed their relationship with what they're capable of. Once you cross this finish line, the bar moves. That's not a warning — that's the point.
Race day energy varies by event size, but the finish line feeling is the same regardless. Big races keep the noise going the whole way. Smaller races give you stretches where it's just you and the miles — and that solitude becomes its own kind of fuel.
The half marathon rewards people who show up for the boring training miles.
How long to train: 10–14 weeks. If you're already running consistently, 10 weeks of structured buildup is enough. If you're building from a casual base, give yourself 14.
From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Frequently Asked Questions (FAQs)
Iron Horse Half Marathon
Aug 30, 2026