كتب : Omar AbdelAziz
Barca's emphatic win was coupled by Real Madrid's 1-1 draw at Malaga, who survived relegation on the final day.
Valladolid defender Luis Prieto fired the home side into a 27th minute lead with an own goal, before Pedro doubled the lead four minutes later, finishing off a trade-mark solo run by Lionel Messi
Star of the season Messi grabbed a second-half brace to take his tally to 34 league goals this term, matching Ronaldo's record in 1996-1997.
Barca finish with a record 99 points, three clear of their arch-rivals Real.
While Malaga and Racing Santander avoided relegation, Valladolid and Tenerife joined Xerez to the Liga Adelante.