Boulder is over a mile high (1,650 metres), and the hiking trails and climbs in the nearby mountains typically range from 8,000-13,000 feet (2,450-4,000 metres) above sea-level. Some people experience a slight shortness of breath when first arriving in Denver and while staying in Boulder for the first few days. The following will rules-of-thumb will help make your visit more enjoyable;As one climbs to higher altitudes from Boulder, you might again experience shortness of breath. In the mountains the weather can change rapidly - in the Summer afternoon thunderstorms and rain showers are common. Visitors are advised to bring "layered clothing", including warmer layers and waterproofs jackets.
- Drink plenty of water, if you feel dehydrated you already are!
- Use sunscreen with an SPF rating of at least 15, preferably 30.
- Bring Sun glasses.
- Moderate your alcohol consumption (less is better).
- Consume less rich foods.
- Avoid vigorous activities for the first couple of days