Build your Chuckanut 50K plan
The instant browser builder stops at the marathon, so this one comes from the coach itself. Tell it your race date, your weekly mileage, and the terrain you can get to, and it writes the whole build and keeps adapting it as you log the training. Free account, no card. You are about 21 weeks out.
- Distances
- 50K
- Terrain
- Hilly
- Taper starts
- March 2, 2027
Course
The Chuckanut 50K course
A long-running Pacific Northwest 50K with a memorable lollipop shape: flat Interurban Trail out from Fairhaven Park, a hard technical 30K middle loop that climbs, traverses, and descends Chuckanut Ridge for about 5,000 feet of gain, then the same flat trail back. The closing stretch is faster than it feels, because your legs arrive at it having just been taken apart on the ridge.
- Terrain
- Hilly
- Distances
- 50K
- Weather on race day
- Mid-March near Bellingham is cool and usually wet. Expect temperatures in the 40s, mud on the ridge, and roots and rock that stay slick all day. Dry years happen and are not the way to plan.
What to train for
Technical descending and running well on tired legs.
The final flat 5K decides finishing times, so long runs that end with steady running after a hard hilly middle are the specific preparation.
Get comfortable on wet rock: this course does not reward tentative footwork.
Sample week
A sample Chuckanut 50K training week
A week from the middle of the build, about six weeks out. Your plan sets the real distances and paces from your own fitness and adjusts them every week as you train.
- Monday
- Rest, or 20 minutes of mobility
- Tuesday Key session
- Hill repeats: 10 × 2 min up a steady grade, jog back down
- Wednesday
- Easy run, 6 mi
- Thursday Key session
- Goal-pace run, 8 mi with 4 mi at race pace
- Friday
- Recovery run, 4 mi, or cross-train
- Saturday Key session
- Long run, 18–20 mi on trail, with as much climbing as you can find
- Sunday Key session
- Second long day, 10–12 mi easy on tired legs
Your build to race day
Taper
Tapering for the Chuckanut 50K
Start the taper two to three weeks before race day. Cut your weekly volume by about a third, then by half in race week, and keep a few short efforts at race pace so your legs stay sharp. The course is hilly, so keep one short hill session in the first taper week to keep the climbs familiar. With the race on March 20, 2027, your taper starts around March 2, 2027.
Chuckanut 50K training questions
How long should I train for the Chuckanut 50K?
Most runners give a 50k race twenty to twenty-four weeks of focused training on top of a season of consistent aerobic mileage. The coach counts back from your actual race date, so if you have less time than that it builds the best plan the remaining weeks allow rather than pretending you have longer.
Is the Chuckanut 50K course hilly?
Hilly. A long-running Pacific Northwest 50K with a memorable lollipop shape: flat Interurban Trail out from Fairhaven Park, a hard technical 30K middle loop that climbs, traverses, and descends Chuckanut Ridge for about 5,000 feet of gain, then the same flat trail back.
What is the weather usually like at the Chuckanut 50K?
Mid-March near Bellingham is cool and usually wet. Expect temperatures in the 40s, mud on the ridge, and roots and rock that stay slick all day. Dry years happen and are not the way to plan.
When should I start tapering for the Chuckanut 50K?
Start the taper two to three weeks before race day. Cut your weekly volume by about a third, then by half in race week, and keep a few short efforts at race pace so your legs stay sharp. The course is hilly, so keep one short hill session in the first taper week to keep the climbs familiar. With the race on March 20, 2027, your taper starts around March 2, 2027.
Do I need an account to get a Chuckanut 50K training plan?
For this one, yes. The instant browser builder stops at the marathon, so an ultra plan comes from the coach itself, which needs a free account. Still no card, and the plan adapts as you log the training.