Istria 100 by UTMB – 168K takes place on Fri, Apr 2, 2027 in Labin, Istria, Croatia. The main route is 168 km.
- Date
- Fri, Apr 2, 2027
- Start
- Labin, Istria 🇭🇷
- Distance
- 168 km
- Climbing
- 6,800 m
- Level
- Open to all
Your 22-week plan to Istria 100 by UTMB – 168K
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.
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The 168K course starts in Labin, climbs Učka with views over the Kvarner region, and finishes in Umag after crossing Istria’s technical trails, medieval towns and forests.
Your road to race day
Race day at Istria 100 by UTMB – 168K is 22 weeks away. This is how a coach divides that time. The first phase starts now.
01Base10 weeks · Oct 31, 2026 – Jan 8, 2027
Aerobic foundation: mostly steady endurance work that grows the aerobic engine and the durability the later phases stand on.
02Build6 weeks · Jan 9, 2027 – Feb 19, 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 · Feb 20, 2027 – Mar 12, 2027
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
04Taper2 weeks · Mar 13, 2027 – Mar 26, 2027
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
05Race week1 week · Mar 27, 2027 – Apr 2, 2027
Openers, rest and logistics. The work is done; the job now is arriving fresh.
Frequently asked questions
When is Istria 100 by UTMB – 168K?
Istria 100 by UTMB – 168K takes place on Fri, Apr 2, 2027 in Labin, Istria, Croatia.
How long is Istria 100 by UTMB – 168K?
The main route is 168 km.
How much climbing does Istria 100 by UTMB – 168K have?
Istria 100 by UTMB – 168K has 6,800 m of climbing.
Who is Istria 100 by UTMB – 168K for?
Istria 100 by UTMB – 168K is open to all participants.
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