DateExpected
Early May 2027
Based on past editions. We'll confirm when the organiser announces.
Venue
Hrpelje, at the elementary school and village centre, Hrpelje-Kozina
Hrpelje-Kozina
Countdown
May
The long one: 66 km and nearly 1,600 m of climbing, and the earliest start of the three. A big day on the bike, so pace it with the cut-off in mind.
Key facts
01Finish cut-off is 15:00
02No e-bikes on this course
03Helmet and a health declaration are required
Create a free training plan for the MTB Slavnik Marathon 66 km
7-day free trial, no card required
The course
The route
Hrpelje-Kozina
Distance66km
Total climb1,567m
StartElevation
0 kmDrag map to rotate65.3 km
Weather
Early-May, Hrpelje-Kozina
19°CTypical high
12°CTypical low
6°CColdest in 20 years
47%Days with rain
Highs around 19°C and lows around 12°C, but it has dropped to 6°C. Rain on 47% of days.
NASA POWER data, 2006-2025, the week either side of race day
Results
Course verified. Results not yet available.
Organiser
Training
Training for the MTB Slavnik Marathon 66 km
We don't do generic plans. We combine deep knowledge of this race's demands with your recent training, then build a plan with you that progresses as you do.
Beina integrates directly with your existing tools to understand your current fitness, and synchronise your planned sessions.
Intervals.icuWhat a MTB Slavnik Marathon 66 km plan targets
Typical sessions
66 km with 1,567 m of climbing
Endurance and fatigue resistance over the full distance
Fuelling and pacing for the whole event
What your weeks look like
Typical sessions
Long endurance rides building toward the full distance
Threshold and sweet-spot work for sustained power
Sustained climbing repeats on real gradients
Terrain and skills practice specific to the course
Not a generic schedule
Typical sessions
Built from your current fitness and the time you actually have
Adapts every week as Beina learns how you respond
Syncs your sessions straight to Garmin and Wahoo
One clear next session, never a wall of spreadsheet
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Get your MTB Slavnik Marathon 66 km plan.
7-day free trial, no card required.
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