downhill bike rin Tuscon, USA. There are around 1,000 bicycle re Stock Image

by meinzahn

Description

Tuscon, USA - November 11, 2011: downhill bike ride in Tuscon, USA. There are around 1,000 bicycle related deaths in the United States each year, 75% of which are due to head injuries.

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Keywords

• Bike
• Sport
• USA
• bicycle
• biking
• boy
• curve
• downhill
• equipment
• extreme
• helmet
• mountain bike
• protection
• protector
• race
• racer
• racing
• ride
• risk
• safety
• sdesert
• shoulders
• sonoran desert
• teenager
• training
• tuscon
• years