=== 4. etape, 21. februar, Seaside – San Luis Obispo, 218 km ===
{|
|'''Resultat'''
{| class="wikitable"
|-
!
!Rytter
!Hold
!Tid
|-
|'''1'''
|{{flagikon|CAN}} Dominique Rollin
|[[Toyota-United Pro Cycling Team]]
|align=right|06:56.08
|-
|'''2'''
|{{flagikon|USA}} [[George Hincapie]]
|[[Team High Road]]
|align=right|+ 18
|-
|'''3'''
|{{flagikon|ESP}} [[Iker Camaño]]
|[[Saunier Duval-Scott]]
|align=right|+ 18
|}
||
|'''Samlede stilling efter 4. etape'''
{| class="wikitable"
!
!Rytter
!Hold
!Tid
|-
|- style="background:#ffc80b"
|'''1'''
|{{flagikon|USA}} [[Levi Leipheimer]]
|[[Astana Team]]
|align=right|20:44.06
|- 
|'''2'''
|{{flagikon|SUI}} [[Fabian Cancellara]]
|[[Team CSC]]
|align=right|+ 13
|-
|'''3'''
|{{flagikon|NED}} [[Robert Gesink]]
|[[Rabobank (cykelhold)|Rabobank]]
|align=right|+ 15
|}
|}
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