The full sequence of a multi-pitch route: from leading to the anchor to the second — plus swapping leads and block leading, cleanly explained.
## Introduction The honest answer to "How does a multi-pitch route work?": in a fixed loop that repeats pitch after pitch. One person leads, builds an anchor at the top, belays the other up — then it's on to the next pitch. Understand this cycle and you understand all of alpine climbing.
The big difference from the gym: nobody stands below and lowers you. You are a team of two working upward over several pitches, constantly swapping or handing over roles. Each pitch ends at an anchor, not on the ground.
Why smooth sequences here are more than aesthetics: in the large Austrian analysis, over 82 % of the uninjured rescued alpine climbers had gotten lost, stuck or too exhausted to continue. Fail to own the sequence and you get slow — and on the mountain slowness is the antechamber to trouble, because weather, cold and darkness don't wait.
There are two basic patterns for splitting the pitches: swapping leads (you alternate who leads pitch by pitch) and block leading (one person leads several pitches in a row). Both have their place — and both follow the same basic cycle we'll now walk through.
## What You Need - A safe anchor build you own blind (see the anchor guide). - A belay device with guide mode to belay the second. - A clear command system with your partner (there's a dedicated guide for this). - A sorted rack so gear hand-offs at the anchor go fast. - A short, well-protected route to first practise the cycle calmly.
## Step by Step ### 1. The leader climbs the pitch The leader climbs up, clips the intermediate protection along the way and climbs to the next anchor. The second belays from below like on a normal lead — braking hand always on the rope.
### 2. Build the anchor and call "off belay" At the top the leader builds the anchor, ties in tight and calls clearly "anchor built / off belay". Only then do they take the device out of lead mode and set up to belay the second.
### 3. Belay the second up The belay device goes into guide mode at the anchor. The leader takes the rope tight and calls "climb on". The second climbs and removes the intermediate protection along the way.
### 4. Transition at the anchor — swap or block With swapping leads, the former second now takes over and heads straight into the next pitch — saving a gear swap. With block leading, the same person keeps leading; then the rack moves, sorted, from second to leader.
### 5. Repeat the cycle — up to the exit Pitch after pitch, the same: lead, anchor, belay up, transition. At the exit the second half of the tour begins, and it counts just as much: the descent or the rappel.
## Common Mistakes - Chaotic anchor changeovers: unsorted rummaging, duplicated moves. Fix: a fixed order for the transition, rack always sorted the same. - Unclear commands: "take!" or "rope!" lost in the wind. Fix: clear, agreed commands, louder and with a name if in doubt. - Forgetting the belay mode: the second belayed in the wrong mode. Fix: a deliberate glance at the device before every "climb on". - Too slow through the anchors: every hand-off takes forever. Fix: practise the changeover deliberately, time is safety on the mountain.
## Safety Notes The most dangerous moments of a multi-pitch are not the hard moves but the transitions at the anchor: rebuilding, switching belay mode, releasing and re-clipping your tether. This is exactly where serious mistakes cluster, because you do several things at once and one wrong order can be fatal.
So: at the anchor never release two protective connections at the same time. The principle is always attached — at every moment you are secured through at least one point. And make the transition deliberately slow: the moment saved by rushing is never worth it. Accident research shows serious mountain events are almost always handling and system errors.
## Pro Tip Settle the roles before the tour, not at the anchor: who leads which pitch, are you swapping or block leading, what are the commands? A 30-second briefing at the base saves a lot of confusion up high.
And practise the anchor changeover on an easy route until it flows like a dance: arrive, tie in, off belay, mode, belay up, transition — every move dialled. Fast, clean anchors are the biggest time gain on the mountain, bigger than any fast move. Train Smart. Play Hard.
## FAQ ### What's the difference between swapping leads and block leading? With swapping leads you alternate who leads pitch by pitch — the previous second leads the next pitch. This saves the gear swap at the anchor and is often fastest. With block leading one person leads several pitches in a row, e.g. because they're stronger or know the terrain better; the rack then has to be handed over each time.
### Who belays whom on a multi-pitch? Always alternating: while leading, the person at the anchor belays the leader from below. Once at the top, the leader belays the second up from above — with the device in guide mode at the anchor. That way exactly one person is belaying at any moment.
### How long does a pitch take? It varies a lot, but count the climbing plus the anchor changeover — the latter can take longer than the climbing for the inexperienced. That's exactly why practising anchors pays off: smooth transitions make the biggest time difference and keep you inside the safe weather window.
### Is there something specific to watch at the anchor changeover? Yes: the principle of always attached. Never release two protective connections at once — at every moment you hold on through at least one point. The serious wall accidents almost all happen at these transitions, because sequence and focus decide everything there.
Alpine Climbing: Belaying the Second From the Anchor