Stage 5 of Tirreno-Adriatico finished today at Mombaroccio. Michael Valgren won from the breakaway. Isaac del Toro retook the GC lead from Van der Poel. The race’s most talked-about story is what happened to the sprinters and big engines on the final muri sections. Van der Poel and Van Aert both got neutralized by short, steep walls that made their sustained power irrelevant.

That’s worth understanding. Because it’s exactly the kind of terrain most amateur cyclists are unprepared for.

What Stage 5 Actually Looked Like

184km from Marotta-Mondolfo to Mombaroccio. Nearly 3,900m of climbing across a stage that wasn’t one big mountain finish but a relentless accumulation of short, punchy categorized climbs — the muri.

Muri (Italian for “walls”) are the signature terrain feature of central Italian racing. They average 7-9% but aren’t smooth sustained grades. They’re short, typically 400-900m long, with sudden ramps that can spike past 12-15%. The gradient isn’t predictable. The effort required to get over them quickly isn’t a function of threshold power. It’s a function of explosive W/kg over 60-90 seconds at maximum effort. The official Tirreno-Adriatico route strings these categorized walls across all five stages before the final day’s time trial.

With 3,900m spread across a 184km stage, the climbing wasn’t concentrated. It was distributed. Every valley was followed by a muro. Every descent meant you’d be climbing again within a few kilometers.

That’s a completely different physiological challenge than one long mountain summit finish.

Why Van der Poel and Van Aert Got Neutralized

Van der Poel and Van Aert are two of the strongest cyclists in the world. Their sustained FTP numbers, their raw power, their ability to produce big watts over long durations — all of it is exceptional. And none of it was decisive today.

On the final steep grades of the muri sequence near Mombaroccio, the gradient spiked sharply enough that W/kg on a 60-90 second burst was the only variable that mattered. Not 20-minute power. Not threshold. Pure explosive output relative to body weight on a short, steep wall.

Riders who can produce 7+ W/kg for 60 seconds on a 10% gradient carry 12+ riders’ worth of momentum into the next flat section. Riders who can “only” sustain 5.5 W/kg for 20 minutes hit the same wall and immediately feel the road pile up beneath them.

Del Toro, a lighter climber at 62kg, has the power-to-weight profile that suits these efforts. When the final muri sequence started, he had the W/kg advantage at the explosive durations that matter on those gradients. The longer the men’s race had gone, with accumulated fatigue from 3,900m of climbing, the more that short-effort explosive capacity decided the outcome.

This pattern doesn’t just appear in Italian pro racing. It shows up in any hilly amateur event that includes punchy climbs rather than a single steady ascent.

The Training Problem Most Cyclists Have

Here’s what most structured training misses: the muri.

A standard training plan builds FTP. Sustained threshold work, sweet spot intervals, 20-minute blocks. These are all useful and the foundation matters. But they don’t specifically train the ability to produce explosive W/kg on a 60-90 second wall at 9% gradient, after two hours of riding, with a short descent before the next one.

The specific demand of muri-type climbs is:

• Duration: 45-90 seconds per wall
• Intensity: 130-160% of FTP (depending on gradient and speed)
• Recovery: incomplete, 3-8 minutes between walls at tempo/threshold pace
• Repetition: 8-15 of them in a hard stage or sportive

Threshold training doesn’t prepare you for that. VO2 max intervals come closer, but they’re usually done with full recovery between reps, which also misrepresents the actual demand. The real challenge is producing a near-maximal explosive effort when you’re already deep in accumulated fatigue.

Lesson 1: W/kg on Short Climbs Is a Separate Capacity

Your FTP in watts is a number about your engine. Your W/kg on a 60-second climb is a number about your engine relative to the gradient and your body weight on that specific terrain.

Two cyclists with identical 280-watt FTPs can have dramatically different outcomes on a muro at 9%. The 68kg rider produces 4.1 W/kg. The 78kg rider produces 3.6 W/kg. At 9% gradient, the heavier rider needs more power to maintain the same speed. If both are already at 95% of FTP, the heavier rider hits the wall and slows immediately. The lighter rider accelerates.

This is one reason why training for punchy climbs requires knowing your W/kg at short durations (45-90 seconds), not just your FTP.

How to measure it: On a climb at 8-10% gradient, go absolutely as hard as you can for 60 seconds. Record your average power. Divide by your weight in kg. Do this three times with 5-minute easy recoveries between, and average the results. That’s your 60-second W/kg on a gradient that approximates a muro.

If your result is below 5 W/kg, the muri will hurt you every time. Between 5-6 W/kg is enough to stay with an average club group on punchy terrain. Above 6 W/kg and you’ll be the one creating the gaps.

Lesson 2: Incomplete Recovery Is the Key Training Variable

Most amateur interval training looks like this: hard effort, full recovery, hard effort, full recovery. That structure builds peak capacity well. But it doesn’t train the specific demand of muri racing, which is hard effort, partial recovery, hard effort, partial recovery, repeated for 2+ hours.

The recovery between muri isn’t enough to clear the fatigue from the previous one. By the fourth or fifth wall, you’re carrying accumulated lactate and central nervous system fatigue into each effort. Your peak W/kg drops with each repetition. The question is how much it drops.

Riders who’ve trained with incomplete recovery hold their W/kg better across repeated efforts. Their lactate clearance during partial recovery is more efficient. That’s trainable. Research published in the International Journal of Sports Physiology and Performance consistently shows that repeated sprint capacity responds to training with compressed recovery intervals more than to longer intervals with full rest.

The workout:

• Warm up 20-25 minutes, including 5 minutes at tempo pace
• On a climb at 7-10% gradient (or trainer with resistance set high), ride 8x [60 sec at maximum effort / 4 min at 75-80% FTP]
• The 4-minute recovery is at moderate tempo, not easy spinning. This simulates descending and riding to the base of the next climb
• After the 8th rep, 15 minutes easy to close

RPE: Each 60-second rep should feel like 9.5-10/10. The recovery sections should feel like 6.5-7/10. If the recovery feels easy, you’re going too easy on it. The whole point is that you never fully recover between walls.

Power targets: If you know your FTP, target 140-160% during the 60-second efforts. The 4-minute recovery should stay at 75-80% FTP. Not 50%. That’s the uncomfortable piece of this workout.

Lesson 3: The Approach Before the Wall Matters

Valgren won today from the breakaway, which means the peloton was managing the muri differently from him. Breakaway riders on punchy terrain have a tactical advantage: they can pace their approach to each wall and gauge their effort against a small group. Peloton riders have to respond to accelerations by others.

For amateurs, the implication is practical. How you ride the 30-60 seconds before a punchy climb determines how much you have when the gradient hits.

Going into a muro at high speed with enough momentum to carry you through the first third before you have to produce significant power is much more efficient than arriving at the base slow and having to generate all the speed from a dead start. Road racers call it “a run at the climb.” It works on short steep walls more than anywhere else.

Practice drill: On a familiar punchy climb near you, experiment with different approach speeds. First repetition: arrive at 25kph, see how deep you have to go to maintain position. Second repetition: arrive at 32kph, use the momentum to carry through the first 100 meters before applying maximum effort. Notice the difference in your legs at the top. The second approach should feel harder on the approach and easier on the wall.

Lesson 4: Gear Selection Changes on 8%+ Gradients

This came up in Paris-Nice Stage 4 at Signal d’Uchon too, but muri amplify it further. On a short steep wall, you don’t have 6km to find your rhythm. You have 500 meters. The gear you’re in at the base is the gear you’ll likely finish in, because there isn’t time to shift through multiple gears mid-climb without losing momentum.

The mistake: arriving at a muro in a medium gear and shifting down reactively when the gradient bites. You lose cadence, you lose momentum, and on a steep gradient the loss is immediate and difficult to recover from.

What works: one proactive shift before the wall starts. If you’re spinning at 90rpm on the flat approach, shift down one or two gears as you see the wall coming 50 meters ahead, increase cadence slightly, and arrive at the steepest gradient already in your working gear and spinning.

With compact gearing or a 1x setup, this matters even more. 1x drivetrain setups give you the range to handle 10% gradients, but the wider steps between gears mean a mistimed shift mid-wall costs more speed than it would with a 2x compact. One shift, early, before the gradient arrives.

Lesson 5: Accumulated Climbing Capacity Is Its Own Training Block

Stage 5’s 3,900m of climbing across 184km is a specific type of fatigue. It’s not sprint fatigue. It’s not threshold fatigue. It’s the cumulative cost of repeated surges above threshold interspersed with descents and rollers at moderate intensity. Your legs never fully flush. Your glycogen depletes in chunks.

Most training blocks don’t include sessions that replicate this. You either do a long zone 2 ride (low intensity, minimal climbing) or you do intervals (high intensity, focused effort). What’s rare is the ride that strings together 2.5 hours of moderate riding with 8-10 punchy climbs scattered through it at hard effort.

That kind of session is one of the more effective ways to build durability on punchy terrain. It doesn’t look impressive on a training log. The average power is moderate. But the specific demand of climbing repeatedly when your legs are already tired is exactly what a hilly sportive or race requires.

Building this into your training:

If you have access to hilly terrain, structure one ride per week as a “punchy climbing day.” Not intervals on a single climb. A route that forces you onto 6-10 short climbs at genuinely hard effort (not cruising pace) with valleys and rollers between them. If you’re using a power meter, target the climbs at 130-150% of FTP and let the valleys sit at 65-75%.

The spring classics base-to-race block includes “punchy terrain rides” in the later weeks, and the Tirreno-Adriatico amateur training guide covers the broader fitness build for this type of racing. The specific muri session above slots into the intensity days of either of those plans.

What This Means for Your Spring Events

If your spring calendar includes any hilly fondos, granfondos, or road races with categorized climbs shorter than 3km, today’s stage is a blueprint for what you’ll face.

The training priority stack for punchy terrain:

Highest priority: 8x60-second explosive efforts with incomplete recovery. Once per week for 4-6 weeks. This is the session most directly aligned with what Stage 5 demanded.

Second priority: Proactive gear selection practice. Find a punchy local climb and ride it specifically to practice the early shift. Do this on a moderate day, not an intensity day. The habit has to be automatic before race day.

Third priority: One genuine “punchy climbing route” per week. Not intervals on one climb, but a route with many climbs. Track how your power on the final climbs compares to the first ones. As fitness builds, the late-climb power should hold better.

What not to do: Don’t add more sweet spot or sustained threshold work this week because you watched Tirreno-Adriatico. If your base is already solid, the short explosive capacity is what’s missing. More 20-minute power isn’t the answer for muri.

Van der Poel’s FTP is somewhere north of 400 watts. He still got neutralized today. The muri don’t care about your 20-minute number.

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Tirreno-Adriatico 2026 Stage 5 result: Michael Valgren wins from breakaway, 184km from Marotta-Mondolfo to Mombaroccio, 3,900m climbing. Isaac del Toro retakes GC lead. Van der Poel and Van Aert neutralized on final steep muri grades. Raced March 13, 2026.