
The shortest course of the Ossola Trail is no quick morning out but a proper mountain race: from Mergozzo it gains some 630 metres in under four kilometres, then does little except descend. Preparation therefore comes down to steep hiking and to quads that still work on the way home.
Start and finish are on Piazza Vittorio Veneto in Mergozzo, known as Piazza Lago, at around 200 metres. After a flat half kilometre the only climb of the day begins. Up to about km 2 it stays runnable at roughly 8 percent, then it steepens sharply and carries on to km 4.3 with ramps above 30 percent.
At the top, a little over 800 metres up, comes almost a kilometre with no climbing to speak of. From km 5 the course tips over: for just over three kilometres it drops at a steady, steep grade to about 330 metres, eases briefly, then runs out over the final stretch down into Mergozzo.
The Ossola Trail crosses the Valgrande area, with technical passages and ridge sections between mountain and lake scenery. The short distance is no watered-down version of it: per kilometre it packs in almost as much vertical as the two longer courses, and only about a tenth of it is flat. What it spares you is the last 450 metres of height, not the steepness.
| Start | Length | Ø | Max. | Gain | Cat. |
|---|---|---|---|---|---|
| km 0.6 | 3.7 km | 16.8 % | 32.8 % | +628 m | Cat. 2 |
Climb categories follow the road-cycling convention and rate the terrain itself (length and gradient) regardless of sport: Cat. 4 marks the easiest rated climbs, Cat. 1 the hardest, and HC (hors catégorie, “beyond categorization”) is reserved for the most brutal ascents. Short climbs below the Cat. 4 threshold stay unrated.
Divide this race by vertical metres, not by kilometres. The first four-odd kilometres cost the most energy and return the least distance. Run the gentler opening easily, because any speed spent there gets billed from km 2 onwards. Once it turns steep, brisk hiking is usually both faster and cheaper than running. You start shortly after the long courses and may catch their field on the same climb; that is no reason to speed up.
The race is decided on the way down. From km 5 you have just over three kilometres to win back the minutes the mountain took, but only on legs that can still land with control. Go too hard above and you end up braking every stride here, losing your footing on the technical ground.
The trap is the number on the entry form. Ten kilometres tempts you to start flat out, yet the climb takes three quarters of an hour or more, and nobody holds a 10K effort through that.

Age-group runners are out here for roughly 1:20 to 2:15 hours, far longer than the distance suggests. The effort splits in two: first a long, evenly hard climb high in the aerobic range, then a descent where the limit is not your lungs but your muscles.
The first half calls for strength endurance on a slope. Schedule regular hill intervals of 10 to 20 minutes on genuinely steep ground, and practise switching between running and powerful hiking. In the final weeks one session should include a continuous climb of around 500 metres, so that you know how long this effort really lasts.
The second half often gets neglected because it does not feel like training. Yet the long, steep descent is where the time is made on this course. Run downhill on purpose, short and controlled at first, later straight after a hard uphill repeat, and add strength work such as lunges and slow step-downs.
The date of 18 April puts your build-up in winter and early spring. Find the steepest hill near you during those months; where none is within reach, stairs or a treadmill on an incline will do. The technical passages also call for regular time on uneven ground, because sure footing on the way down translates directly into time.

Download the Ossola Trail course as a GPX file for your watch or bike computer.
Ben connects your goal, the course, current load, recovery, and calendar. Your plan stays pointed at race day even when real life is not perfectly plannable.
Ossola Trail is 10 km long. That distance shapes how much aerobic endurance, pace durability, and race-specific work belong in the training plan.
Ossola Trail has around 650 m of elevation gain over 10 km. That affects pacing, muscular load, and preparation for late-race sections.
Ossola Trail is classified as Mountainous, averaging 62.5 vertical metres per kilometre. 10% of the route is flat, 11% climbs moderately (2 to 6%) and 29% is steeper than 6%.
The hardest climb of Ossola Trail starts at kilometre 0.6, runs for 3.7 km at an average of 16.8% and gains 628 metres. Cycling-convention rating: Cat. 2.
Yes, Ossola Trail is laid out as a loop: start and finish are in the same place.
Yes. The Ossola Trail course is on this page as a free GPX download — ready to import into Garmin, Wahoo, Komoot, Strava or any other app that reads GPX.
Preparation for Ossola Trail should account for 10 km, 650 m of elevation gain, current training load, and available training time. An adaptive plan helps place key sessions without ignoring recovery and real life.
The pacing strategy for Ossola Trail should reflect 10 km, 650 m of elevation gain, and your current fitness. Start controlled and keep margin for sections where the profile or fatigue makes target pace harder.
Ossola Trail takes place on April 18, 2027.
Ossola Trail takes place in Mergozzo, Italy.
Ossola Trail offers 3 distances — Ossola Trail 10 km: 10 km; Ossola Trail 20 km: 20 km; Ossola Trail 28 km: 28 km.
Registration runs through the organiser: ossolatrail.com. YOUB shows you the course, elevation profile and training plan for your preparation.