Campus Board Interval Timer

Campus boarding trains contact strength and upper-body power through dynamic movement on rungs without feet. A set is short — a ladder or a sequence of bumps lasting ten to twenty seconds — and the rest is long, typically three minutes, because the quality of the movement is the entire point and it degrades fast.

Twenty seconds covers a full ladder or a bump sequence. Beyond that, the movement slows and the training stimulus changes from power to fatigue resistance, which the campus board is a poor and dangerous tool for. Three minutes of rest is what allows the next set to be explosive.

The injury caveat is not decoration

Campus boarding involves high, rapidly-applied loads on fingers with no feet to share them, and it has a well-earned reputation for causing pulley and elbow injuries. It is an advanced tool for climbers with years of load history in their fingers.

The common failure is a climber with the power to do it and not the tendon history to absorb it. If you are unsure whether you are ready, you are not — and there is no climbing goal that campus boarding is the only route to.

Warm up much more than feels necessary

A campus session needs a long, progressive warm-up: easy climbing, then progressively harder pulling, then a few submaximal campus moves before anything explosive. Twenty minutes is not excessive.

The first set of a session is the most common injury moment precisely because it feels fine. Cold fingers can produce the force; the connective tissue just cannot absorb it yet.

Stop early, always

Six sets is plenty and four is often better. The session should end while the movement still looks fast and controlled, not when it stops.

Any hint of elbow or finger pain ends the session immediately. Elbow tendinopathy from campus boarding is measured in months of lost climbing, which makes the trade against one extra set obvious.

Common set formats. Rest ratios are long by design — power work degrades quickly and degraded power work is where injuries happen.

Campus board set structures
Format	Set length	Rest	Sets	Trains
Ladder	10–15 s	3 min	4–6	Contact strength
Bumps	10–20 s	3 min	4–6	Power and precision
Max ladder	5–10 s	3–5 min	3–5	Maximum reach power
Doubles	5–10 s	3–5 min	3–5	Explosive pull, high risk
Touches	10–15 s	2–3 min	4–6	Lower-load entry point

Advanced climbers only. High rapidly-applied finger loads with no feet — a well-known cause of pulley and elbow injuries.
End the session while the movement still looks fast, not when it stops. Any elbow or finger pain ends it immediately.

Source: Campus board formats and rest ratios are established climbing training convention, widely documented in climbing coaching literature

Sources

Campus board formats and rest ratios are established climbing training convention, widely documented in climbing coaching literature , TheTimerLab — accessed 2026-07-28

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❓ Frequently Asked Questions

Why are campus board rests so long?

Because movement quality is the whole point and it degrades fast. Three minutes lets the next set be explosive. Short rests turn a power session into a fatigue session, which is what the campus board is worst and most dangerous at.

Is campus boarding dangerous?

It carries real risk. High rapidly-applied loads on fingers with no feet to share them cause pulley and elbow injuries, and it is an advanced tool for climbers with years of finger load history.

How do I know if I am ready?

If you are unsure, you are not. The common failure is a climber with the power to do it and without the tendon history to absorb it — and no climbing goal requires campus boarding specifically.

How long should I warm up?

Longer than feels necessary — twenty minutes of easy climbing, progressively harder pulling and a few submaximal campus moves. The first set is the most common injury moment because it feels fine.

How many sets should I do?

Six is plenty and four is often better. End while the movement still looks fast and controlled rather than when it stops looking that way.

What if my elbow hurts?

End the session immediately. Elbow tendinopathy from campus boarding is measured in months of lost climbing, which makes the trade against one more set straightforward.