Benefits of Sand Running
Make hill workouts tougher and more effective by doing them on sand. – By Alex Hutchinson
Percy Cerutty, coach of Australia’s 1960 Olympic 1500-meter winner Herb Elliott, favoured sand workouts for their ability to build speed, strength, and endurance. At Cerutty’s seaside base, Elliott would sprint up a dune as many as 50 times in a row. The result: He retired never having lost a 1500-meter race.
Here’s what you need to know to try sand running.
Running on loose, dry sand takes 20 to 60 percent more energy than running on grass. Plus, soft sand absorbs some of the energy from your foot strike instead of pushing you forward, and forces you to activate more lower-leg muscles to stay upright. The result is levels of lactate, a marker of anaerobic fatigue, that spike two or three times higher than on firm surfaces. one study found athletes improved maximal oxygen uptake (vO2) by 10 percent after eight weeks of sand workouts twice a week, compared with just six percent for those doing the same workouts on grass.
Loose sand’s other perk is its low impact forces, which produce less muscle damage and subsequent soreness. Physiology aside, the best reason to hit the sand might be as a mental toughness workout, American athlete Molly Huddle says: It’s impossible not to make your legs burn.
Cerutty used three key dune circuits for workouts. The shortest was a steep climb just 25 metres long, but at a 60-degree incline. To replicate this, try 10 reps of a hill that takes about 15 seconds to climb; walk or jog down for recovery, taking enough time that you’re ready to sprint hard again on the next rep. The mid-length circuit was about 400 metres long, finishing at the top of a steep hill. For this kind of workout, start with six reps, and take at least 2:00 recovery. Finally, the longest circuit was a rolling loop of just over 1.5 kilometre up and down the dunes. Start with three reps and take 3:00 recovery.
If you have regular access to dunes, include a sand hill workout once a week during base training. If you’re making a special trip to run on dunes, pick a medium-length incline that takes 45 to 90 seconds to climb, to strike a balance between strength and endurance. See how many reps you can do (then take a few days to recover).
It’s hard to maintain good form when your feet keep sliding backward. For a more powerful stride, push hard off your back foot (even though it’s slipping) rather than reaching forward with your front. The soft surface may put extra strain on your Achilles tendon, so avoid sand workouts if you have a history of Achilles problems, and stop if you feel calf pain.
The other big issue is whether to wear shoes, and there’s no right answer. If you leave them on, wear tall socks to keep sand out. If you take them off, your foot and ankle muscles will work extra hard, so keep the first few workouts short.
When running on dunes, stick to pre-existing paths and respect local rules about access.