Julsø Ultra takes place on Sat, Apr 24, 2027 in Silkeborg, Denmark. The main route is 60 km.
- Date
- Sat, Apr 24, 2027
- Start
- Silkeborg 🇩🇰
- Distance
- 60 km
- Climbing
- 1,700 m
- Level
- Open to all
Your 29-week plan to Julsø Ultra
The Base 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
Julsø Ultra is a classic Danish spring trail running event taking runners through the scenic and hilly Silkeborg Forests around Julsø lake.
What this race demands
Julsø Ultra requires sustaining forward motion across 60 km of hilly trail terrain with 1700 meters of elevation gain.
Continuous climbing capacity
Accumulating 1700 meters of elevation gain over a 60 km distance demands sustained muscular endurance and efficient pacing on continuous ascents.
Trail durability
Navigating scenic and hilly forest trails for an ultra-distance event places high repetitive load on lower limbs and requires stability on uneven ground.
A target intake of 60 to 90 grams of carbohydrates per hour is required to sustain energy levels across the multi-hour duration of a 60 km trail race.
Estimated finish times
Estimates by level, not promises. Your own number depends on your fitness on the day.
Your road to race day
Race day at Julsø Ultra is 29 weeks away. This is how a coach divides that time. The first phase starts now.
01Base17 weeks · Oct 4, 2026 – Jan 30, 2027
Aerobic foundation: mostly steady endurance work that grows the aerobic engine and the durability the later phases stand on.
02Build6 weeks · Jan 31, 2027 – Mar 13, 2027
Progressive overload: training load climbs in waves, with harder weeks stacked on the base and planned recovery weeks that let the gains land.
03Peak3 weeks · Mar 14, 2027 – Apr 3, 2027
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
04Taper2 weeks · Apr 4, 2027 – Apr 17, 2027
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
05Race week1 week · Apr 18, 2027 – Apr 24, 2027
Openers, rest and logistics. The work is done; the job now is arriving fresh.
Frequently asked questions
When is Julsø Ultra?
Julsø Ultra takes place on Sat, Apr 24, 2027 in Silkeborg, Denmark.
How long is Julsø Ultra?
The main route is 60 km.
What does Julsø Ultra demand?
Julsø Ultra requires sustaining forward motion across 60 km of hilly trail terrain with 1700 meters of elevation gain.
How much climbing does Julsø Ultra have?
Julsø Ultra has 1,700 m of climbing.
Who is Julsø Ultra for?
Julsø Ultra is open to all participants.
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