Will I definitely get sick?

Most trekkers experience mild symptoms like headaches or loss of appetite. Severe Acute Mountain Sickness (AMS) is less common if you follow a slow ascent profile.

Can I train for altitude?

Physical fitness helps your endurance, but it does not prevent altitude sickness. Even elite athletes can suffer from AMS; the primary defense is the speed of ascent.

When should I turn back?

If you have persistent vomiting, ataxia (loss of balance), or confusion, you must descend immediately. Never ignore these signs.

Preventing Altitude Sickness on Mount Kilimanjaro

Prevent altitude sickness by choosing a route that takes at least 7 days, walking at an extremely slow 'pole pole' pace, and staying hydrated. If symptoms become severe, the only cure is to descend immediately.

Choose a longer route. Avoid the 5-day routes. Book a 7, 8, or 9-day trek (like Lemosho or Northern Circuit) to allow your body double the time to acclimatize.
Walk 'Pole Pole'. This means 'slowly, slowly' in Swahili. You should be able to hold a full conversation while walking; if you are breathless, you are going too fast.
Hydrate aggressively. Drink 3 to 4 liters of water daily. Dehydration mimics and exacerbates altitude sickness symptoms, making it harder for your body to adjust to thin air.
Monitor symptoms daily. Use a pulse oximeter twice daily to track your oxygen saturation and heart rate. Communicate honestly with your lead guide about any headaches or nausea.
Consider Diamox. Consult your doctor about taking Acetazolamide (Diamox). It helps your body acclimatize faster by forcing you to breathe deeper and more frequently.

Will I definitely get sick?: Most trekkers experience mild symptoms like headaches or loss of appetite. Severe Acute Mountain Sickness (AMS) is less common if you follow a slow ascent profile.
Can I train for altitude?: Physical fitness helps your endurance, but it does not prevent altitude sickness. Even elite athletes can suffer from AMS; the primary defense is the speed of ascent.
When should I turn back?: If you have persistent vomiting, ataxia (loss of balance), or confusion, you must descend immediately. Never ignore these signs.