Your Bucovina Ultra Rocks training plan has to prepare you for one of the steepest courses on the circuit, in the Eastern Carpathians of northern Romania, starting from Câmpulung Moldovenesc. Even the shorter formats often exceed 60 m of climbing per kilometre, and the longest, the Ultra Rocks, packs 7000 m of gain into 114 km. Here is how to train for Bucovina Ultra Rocks by UTMB, whatever your distance.
The short answer
- Typical build: 8 to 12 weeks for Radical and Rumble Rock, 12 to 16 weeks for Rocky and Lady’s Rocks, 16 to 24 weeks for Four Summits, 6 months or more for the Ultra Rocks.
- The race is held in late July, so your specific phase falls in May and June, ideal for building vertical.
- Key sessions: long power-hiking climbs, steep descents, very hilly long runs, back-to-back weekends.
- The defining trait: an extreme elevation-to-distance ratio, and an 11 pm start on the Ultra Rocks that sends you straight into the night.
Contents
Bucovina Ultra Rocks distances and elevation gain
| Format | Distance | Elevation gain | Profile/notes |
|---|---|---|---|
| Ultra Rocks (100M) | 114 km | 7000 m | 11 pm start in Câmpulung Moldovenesc, 32 h 30 max race time; 4 Running Stones |
| Four Summits (100K) | 72 km | 4600 m | Câmpulung Moldovenesc; 3 Running Stones |
| Lady’s Rocks (50K) | 48 km | 3200 m | Câmpulung Moldovenesc; 2 Running Stones |
| Rocky (50K) | 33 km | 2000 m | Câmpulung Moldovenesc; 2 Running Stones |
| Radical (20K) | 20 km | 1100 m | Câmpulung Moldovenesc; 1 Running Stone |
| Rumble Rock (20K) | 16.5 km | 700 m | Starts at Alpin Rarău; 1 Running Stone |
| RUNC Challenge | 5 km | 550 m | Short, very steep format; no Running Stones category |
Figures come from the official Bucovina Ultra Rocks by UTMB website. The Ultra Rocks is “only” 114 km, but at roughly 61 m of climbing per kilometre it sits in the 100M category: what counts is the combined effort of distance and elevation. Four Summits (64 m/km) and Lady’s Rocks (67 m/km) are steeper still. Expect fir forests, ridges and rocky outcrops. In late July valleys can be warm while nights and ridges stay cool, so your kit must cover both.
What makes Bucovina Ultra Rocks tough
At Bucovina, the clock moves slowly. With such gradients, much of the race is power hiking uphill and steep descending, two skills that have little in common with flat running. A fast road runner with little steep-terrain experience can lose a lot of time here.
On the Ultra Rocks, the 11 pm start adds a rare constraint: you begin with a full night after a day of waiting in which good sleep is hard to get. The organisers even mention moonlight over Pietrele Doamnei. Arrive well rested and test your headlamp and night-time fuelling beforehand. The 32 h 30 limit looks generous, but with 7000 m of gain the downhill fatigue builds quickly.
How long do you need to train?
For Radical and Rumble Rock, 8 to 12 weeks is enough with regular trail experience, though 1100 m of gain over 20 km is already a real mountain race. For Rocky and Lady’s Rocks, allow 12 to 16 weeks after a 25 km race with at least 1000 m of climbing. Four Summits needs 16 to 24 weeks and some mountain ultra experience. For the Ultra Rocks, plan at least six months of specific training, ideally after an ultra with over 4000 m of gain. Adjust to your level and the time you have each week.
The phases of your training plan
Base (February to April for a late-July ultra). Build aerobic endurance and strength: regular easy running, two strength sessions a week with eccentric quad and calf work, and one quality session.
Specific (May to early July). Vertical becomes the priority, with long mountain runs, progressively more climbing and long power-hiking sections. This is RunMotion’s natural terrain: founders Guillaume and Romain Adam, twin brothers, come from the Alps, and mountains, vertical and ultra distance sit at the heart of how our plans are designed. Ultra runners should add big weekends and at least one night run.
Taper (2 to 3 weeks). Cut volume by about 30 to 50%, keep a few hard climbs and prioritise sleep, which matters before an 11 pm start.
Key sessions for Bucovina Ultra Rocks
Long power-hiking climbs. On a steep slope, string together 20 to 40 minutes of fast uphill walking, with or without poles depending on the rules. This is the number-one skill at Bucovina.
Threshold hill repeats. Repeats of 6 to 10 minutes at an effort you could hold for about an hour build climbing power, and they make the difference on short formats like Radical.
Repeated steep descents. Hike up, run down at a controlled pace, several times per session. It conditions your quads and builds confidence.
Mountain back-to-backs. For Four Summits and the Ultra Rocks, a very hilly long run on Saturday and another on Sunday. Include at least one run that starts in the evening to rehearse the night start.
For a plan built around your Bucovina format, the RunMotion Coach app, the official online coach of the UTMB World Series, gives you a personalised programme with elevation, strength and recovery included, adjusted every week to the sessions you completed and your availability. Try it free for 7 days.
Plan your race strategy with Race Strategy
On such a steep course, flat-ground pace means nothing. Race Strategy by RunMotion calculates your plan kilometre by kilometre with pace adjusted for elevation, altitude and terrain technicality, estimates your split times at key points and builds a fuelling and hydration plan by section (carbohydrates, water, sodium), adjusted for race-day weather. Start from the race list or import the official GPX file from the organisers’ website, for example to see when daylight will return on the Ultra Rocks.
Running Stones and the UTMB World Series
According to the official website, the Ultra Rocks earns 4 Running Stones, Four Summits 3, Lady’s Rocks and Rocky 2, Radical and Rumble Rock 1. They improve your chances in the Finals draw. For a full season, see our UTMB World Series training plan guide and our article on preparing a UTMB World Series season.
FAQ
Why is the Ultra Rocks a 100M race at only 114 km?
Because the category reflects total effort, not just distance. With 7000 m of gain, the Ultra Rocks demands an effort comparable to much longer but flatter races. Train for it like a mountain 100-miler.
Do you need poles at Bucovina Ultra Rocks?
The rules and mandatory kit list on the official website are the reference. On such steep ground, many runners find poles useful uphill, provided they have trained with them.
How much weekly climbing for the Ultra Rocks?
As a rough guide, experienced runners preparing such a steep ultra often peak at 2500 to 4000 m of weekly gain. Get there gradually: your history and access to terrain decide the right number.
Final thoughts
At Bucovina, elevation dictates everything: your training must make you a strong uphill hiker and a solid descender who can handle the night. With a well-built progression, these wild Carpathians become a playground rather than a wall. Start your 7-day free trial of RunMotion Coach to get a plan that adapts to you.
Article updated by the RunMotion Coach team.
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