Pippa Middleton participates in the Highland Cross 2011 challenge duathalon.

Pippa participated in the 50-mile coast-to-coast challenge as part of a team called the Affric Brats.

The Highland Cross challenge is a 50 mile duathlon, 20 miles running and 30 miles on bike, across the scenic Scottish Highlands.

Pippa even manages to make an accessory like a bike helmet look good!