Electrolytes for hiking: water, food and refill planning

Confirm refills rather than assuming them

Check which water points are currently usable. A fountain on an old map may be off and a hut may be closed. Estimate time using elevation, breaks and the pace of your group. Have an alternative if a refill fails, including shortening the route where appropriate.

Make the water easy to reach

Choose a bottle, reservoir or soft flask you can comfortably use with your pack. Check for leaks and practise cleaning it. Keep powder dry. Measure the water used for mixing rather than pouring a stick into a reservoir with an unknown amount left. A convenient system is more useful than unused capacity.

Plan food as well as drinks

A day on foot also involves eating. Pack familiar foods and choose safe, comfortable stopping points. Sodium already in meals forms part of your overall intake. An electrolyte stick does not make a bottle a meal and does not automatically supply the carbohydrate required by your food plan.

Adjust the walk to the environment

Start in cooler conditions where possible, use shade and change pace when needed. Taking more electrolytes is not an altitude strategy: they do not prevent altitude sickness. On multi-day treks, confirm water access and storage for every stage. Follow local advice and change or abandon the route if conditions make the plan unsafe.

Common questions