Chosin Challenge Course takes place on Dec 4 – 6, 2026 in Middle Brook, United States. The main route is 64.4 km.
- Date
- Dec 4 – 6, 2026
- Start
- Middle Brook 🇺🇸
- Distance
- 64.4 km
- Level
- Open to all
Your 9-week plan to Chosin Challenge Course
The Build phase starts this week. Built around your fitness and adjusted every day as your form changes; attach the course and it prepares for the climbs too.
Build my planFree to start · No credit card
The Chosin Challenge Course is a rigorous 3-day, 2-night, 40-mile winter trek traversing the Goggin and Ozark Trail sections of Johnson's Shut-Ins and Taum Sauk Mountain State Parks.
What this race demands
The Chosin Challenge Course demands complete physical and mental self-sufficiency to complete a three-day, 40-mile winter trek across rugged state park terrain.
Winter endurance
Covering 40 miles over three days in December requires sustained stamina and resilience against cold-weather environmental stress.
Load carriage
Operating across a multi-day trek with two overnight stays requires carrying necessary provisions, shelter, and cold-weather gear on foot.
Terrain negotiation
Traversing the trail sections of Johnson's Shut-Ins and Taum Sauk Mountain demands steady footing and mobility over varied, technical park surfaces.
Given the multi-day nature of the trek, athletes should maintain consistent carbohydrate intake of 30 to 60 grams per hour during active movement to sustain energy reserves.
Your road to race day
Race day at Chosin Challenge Course is 9 weeks away. This is how a coach divides that time. The first phase starts now.
01Build3 weeks · Oct 3, 2026 – Oct 23, 2026
Progressive overload: training load climbs in waves, with harder weeks stacked on the base and planned recovery weeks that let the gains land.
02Peak3 weeks · Oct 24, 2026 – Nov 13, 2026
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
03Taper2 weeks · Nov 14, 2026 – Nov 27, 2026
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
04Race week1 week · Nov 28, 2026 – Dec 4, 2026
Openers, rest and logistics. The work is done; the job now is arriving fresh.
Frequently asked questions
When is Chosin Challenge Course?
Chosin Challenge Course takes place on Dec 4 – 6, 2026 in Middle Brook, United States.
How long is Chosin Challenge Course?
The main route is 64.4 km.
What does Chosin Challenge Course demand?
The Chosin Challenge Course demands complete physical and mental self-sufficiency to complete a three-day, 40-mile winter trek across rugged state park terrain.
Who is Chosin Challenge Course for?
Chosin Challenge Course is open to all participants.
Similar races
Organising this race?