Royal little-sis Pippa Middleton competed in the 2011 Highland Cross 50 Mile Duathlon in the Scottish Highlands last weekend.
She completed the 20-mile run and 30-mile bike ride in 5:07:58.
Pips finished 15th out of 116 women who competed in the event.
Middleton competed in the BE Blenheim Triathlon Relay earlier this month where she did the running leg. Pippa has also completed a solo triathlon and several running races of varying distances.