Repeaters for Climbing Endurance
Updated 4 min read Endurance and pump Félix Bourassa-Moreau
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Repeaters are short hangs with short rests, classically 7 seconds on and 3 off, six times in a row. For strength-endurance, hang at about 75 to 80% of your max for 4 to 6 sets. In a 4-week trial, hangs at 80% gained nearly the strength of maximal hangs and improved endurance; at 60%, they improved endurance only.
What are repeaters?
A set of repeaters copies the grip-and-release rhythm of a route: each short rest lets some blood back into the forearm, so you keep producing force for longer than in one long hang. That capacity, holding hard grips again and again without fading, is what a pumpy route asks for.
They are a staple of hangboard training, popularized by the Anderson brothers’ Rock Climber’s Training Manual; coach Eric Hörst also presents a 7/3 repeater protocol on his site.
How do you do repeaters?
Warm up first with easy climbing and a few progressively harder hangs (warm-up routine).
| Strength-endurance repeaters | |
|---|---|
| Load | About 75 to 80% of your max, above critical force. Set it from your max, not your body weight: body weight on an edge might be 60% of max for one climber and 95% for another |
| Hang / rest | 7 s on, 3 s off |
| Reps per set | 6 |
| Sets | 4 to 6, with 3 min rest |
| Within a set | Same edge and same load for the whole set |
| Adjust | The last rep should be hard but clean. If your grip opens or you drop before it, reduce the load; if the whole set feels easy, increase it next session |
| Stop | With your grip still intact. Grinding through failure trains your pain tolerance more than your fingers |
| Frequency | Once a week alongside one or two aerobic base sessions, or twice a week in a dedicated 4 to 6 week block, then retest |
One strength-endurance set of repeaters, next to max hangs and Abrahangs on the same time scale.
At 30 to 40% of max, the same 7/3 rhythm becomes aerobic base work: 10 to 12 reps, 3 to 5 sets, 2 minutes between sets. Aerobic endurance on the hangboard covers that end.
Why does the load decide what they train?
Strength-endurance repeaters sit well above your critical force, about 41% of max on average, so each set spends a limited reserve that runs out in minutes. Finger endurance training sets out the full zone table.
In a 2022 trial, 54 climbers trained twice a week for 4 weeks. Hangs of 10 s at 80% of max with 6 s rest raised max strength by 12.4% and improved endurance. The same rhythm at 60% improved endurance, with a 5.9% strength gain that was not significant. Maximal 6-second pulls raised strength by 14.3% with no significant change in endurance. Over 8 weeks, Eva López found intermittent hangs raised grip endurance 45%, against 34% for maximal hangs, a difference that was not significant.
The quality they train counts: in a 2025 study of 307 climbers, finger strength explained most of the variance in climbing ability, and an intermittent endurance test was the next strongest predictor.
Who are repeaters for?
- Climbers with an aerobic base behind them. Build the base for 3 to 4 weeks before adding intervals.
- Climbers with a recent max. The load is a share of it, so test your max first and retest after a block.
Not for anyone with current finger pain, unless a physiotherapist set the loads, nor for beginners and growing teenagers without a coach.
Do this in Entralpi
Loads in % of max are hard to hold with a weight belt, because the load on your fingers depends on how hard you pull. On the plate, you stand under your hangboard and the app shows the force through your fingers rep by rep, so you see when fatigue sets in. In the app, the number at the top of a set is how many times the set is done, so one hang and one rest done six times is a repeater (Build your own workout). The max strength test measures your max (Take a test); keep it with one tap at the end of the test, or type it in Settings (Profile, then Settings, under Physical Profile, Max strength) and a workout in % max uses it. The endurance test gives your critical force.
Sources
- Berta P, et al. (2025). Validity and normative scores of finger flexor strength and endurance tests. Journal of Sports Sciences, 43(3).
- Devise M, et al. (2022). Effects of different hangboard training intensities on finger grip strength, stamina, and endurance. Frontiers in Sports and Active Living.
- López-Rivera E, González-Badillo JJ (2019). Comparison of the effects of three hangboard strength and endurance training programs on grip endurance in sport climbers. Journal of Human Kinetics, 66.
- Giles D, et al. (2019). The determination of finger-flexor critical force in rock climbers. International Journal of Sports Physiology and Performance.
- Hörst E (2019). Hangboard finger training: the 7/3 repeater protocol. Training for Climbing.
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