DateExpected
Early June 2027
Based on past editions. We'll confirm when the organiser announces.
Venue
Kolodvorska ulica 2, Grosuplje
Grosuplje
Countdown
June
The middle-distance option, 78 km with 600 m of climbing. Long enough to feel like a real ride, gentle enough that the hills won't dominate.
Key facts
01Helmet required
02Road traffic rules apply, roads are not closed
Create a free training plan for the Maraton treh občin 78 km
7-day free trial, no card required
The course
The route
Grosuplje
Distance78km
Total climb600m
StartElevation
0 kmDrag map to rotate76.3 km
Weather
Early-June, Grosuplje
22°CTypical high
12°CTypical low
3°CColdest in 20 years
57%Days with rain
Highs around 22°C and lows around 12°C, but it has dropped to 3°C. Rain on 57% of days.
NASA POWER data, 2006-2025, the week either side of race day
Results
Course verified. Results not yet available.
Organiser
OrganiserKolesarsko društvo Grosuplje and Zavod Turizem Grosuplje
Websitekdgrosuplje.si
Running since1999
Training
Training for the Maraton treh občin 78 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 Maraton treh občin 78 km plan targets
Typical sessions
78 km with 600 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
Group rides for drafting and bunch-riding skills
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
Entries open now
Get your Maraton treh občin 78 km plan.
7-day free trial, no card required.
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