Complex sentence: Porte attacked again with around remaining, and soloed away to victory by four seconds ahead of Sánchez and Henao; his victory moved him to six seconds behind Henao, ahead of the final time trial in Beasain.
Split into simpler sentences: Porte attacked again with around remaining, and soloed away to victory by four seconds ahead of Sánchez and Henao. Porte's victory moved him to six seconds behind Henao, ahead of the final time trial in Beasain.