If any of your training runs .
Races take you more than 8000 feet above sea level , you could get Altitude Sickness - pounding headache as you go higher , dizziness , fatigue , shortness of breath and nausea .
If any of your training runs or races take you more than 8000 feet above sea level , you could get Altitude Sickness - pounding headache as you go higher , dizziness , fatigue , shortness of breath and nausea .