C’est le coureur Américain de la Garmin Tyler Farrar qui remporte la 4 éme étape de ce tour. Il devance au sprint un autre américain Ken Hanson et le Belge Gianni Meersman . Sagan, mal placé dès le début du sprint, ne finit qu’à la 5 ème place. A noter l’abandon du champion du monde Philippe Gilbert. Le coureur Belge souffrant des fortes chaleurs, avoisinant les 45 degrés tout de même, n’a pas pris le départ de cette 4 ème étape pour rentrer en Europe afin de se rendre au chevet de son épouse sur le point d’accoucher. Au général, pas de changement Janier Acevedo compte toujours 12 sec d’avance sur Tejay van Garderen et 27 sec sur l’Irlandais Philip Deignan. C’est une belle journée de consolation sur les 2 tours pour le Team Garmin, Navardauskas gagne sur le Giro et Farrar en Californie, atténuant la déception du coureur tenant du titre Hesjedal au général du Giro.
Classement de la 4 ètape Top 10
1. Tyler Farrar (EU/Garmin), les 134,6 km en 3 h 14’09 »
2. Ken Hanson (EU), m.t.
3. Gianni Meersman (Bel)
4. Kris Boeckmans (Bel)
5. Peter Sagan (SVK)
6. Michael Matthews (Aus)
7. Thor Hushovd (Nor)
8. Sylvain Chavanel
9. Jeremy Vennell (NZL)
10. Jasper Stuyven (Bel)
Classement général provisoire
| . | 131 | COL19851206 | ACEVEDO, Janier | JSH | 17:13:59 | 00:00:00 |
| 2. | 31 | USA19880812 | VAN GARDEREN, Tejay | BMC | 17:14:11 | 00:00:12 |
| 3. | 82 | IRL19830907 | DEIGNAN, Philip | UHC | 17:14:26 | 00:00:27 |
| 4. | 33 | SUI19861209 | FRANK, Mathias | BMC | 17:14:44 | 00:00:45 |
| 5. | 61 | AUS19791220 | ROGERS, Michael | TST | 17:14:54 | 00:00:55 |
| 6. | 151 | ESP19760309 | MANCEBO, Francisco | 5HR | 17:15:02 | 00:01:03 |
| 7. | 121 | USA19880826 | HAGA, Chad | OPM | 17:15:12 | 00:01:13 |
| 8. | 2 | USA19850509 | BUSCHE, Matthew | RLT | 17:15:14 | 00:01:15 |
| 9. | 142 | USA19920220 | CRADDOCK, Lawson | BCT | 17:15:31 | 00:01:32 |
| 10. | 47 | AUS19880111 | MEYER, Cameron | OGE | 17:15:39 | 00:01:40 |
| 11. | 81 | AHO19840215 | DE MAAR, Marc | UHC | 17:15:55 | 00:01:56 |
| 12. | 153 | USA19861205 | JENKINS, Max | 5HR | 17:16:26 | 00:02:27 |
| 13. | 83 | USA19831205 | EUSER, Lucas | UHC | 17:16:26 | 00:02:27 |
| 14. | 152 | USA19840328 | ENGLISH, Nathaniel | 5HR | 17:16:35 | 00:02:36 |
| 15. | 111 | USA19751015 | BALDWIN, Christopher | BPC | 17:17:14 | 00:03:15 |
| 16. | 16 | AUS19920102 | MORTON, Lachlan David | GRS | 17:17:18 | 00:03:19 |
| 17. | 101 | CZE19871115 | KOENIG, Leopold | TNE | 17:17:41 | 00:03:42 |
| 18. | 3 | LUX19840719 | DIDIER, Laurent | RLT | 17:18:01 | 00:04:02 |
| 19. | 93 | USA19880216 | BUTLER, Chris | CSS | 17:18:08 | 00:04:09 |
| 20. | 56 | USA19830131 | KING, Edward | CAN | 17:18:16 | 00:04:17 |
| 21. | 103 | ESP19890506 | DE LA CRUZ, David | TNE | 17:18:32 | 00:04:33 |
| 22. | 58 | DEN19811204 | VANDBORG, Brian | CAN | 17:19:06 | 00:05:07 |
| 23. | 147 | USA19920421 | PUTT, Tanner | BCT | 17:19:47 | 00:05:48 |
| 24. | 8 | ESP19770401 | ZUBELDIA, Haimar | RLT | 17:20:05 | 00:06:06 |
| 25. | 91 | USA19860815 | BEYER, Chad | CSS | 17:20:31 | 00:06:32 |
| 26. | 114 | NZL19870412 | TORCKLER, Michael | BPC | 17:21:12 | 00:07:13 |
| 27. | 105 | POL19801027 | HUZARSKI, Bartosz | TNE | 17:21:46 | 00:07:47 |
| 28. | 78 | NED19820911 | WESTRA, Lieuwe | VCD | 17:23:18 | 00:09:19 |
| 29. | 7 | LUX19850610 | SCHLECK, Andy | RLT | 17:23:20 | 00:09:21 |
| 30. | 113 | USA19890227 | JONES, Carter | BPC | 17:24:10 | 00:10:11 |
| 31. | 11 | USA19790112 | ZABRISKIE, David | GRS | 17:24:13 | 00:10:14 |
| 32. | 32 | USA19840216 | BOOKWALTER, Brent | BMC | 17:24:53 | 00:10:54 |
| 33. | 38 | SUI19860929 | SCHAR, Michael | BMC | 17:25:22 | 00:11:23 |
| 34. | 123 | USA19750226 | CANDELARIO, Alexander | OPM | 17:25:35 | 00:11:36 |
| 35. | 156 | USA19850821 | STEMPER, James | 5HR | 17:26:22 | 00:12:23 |
| 36. | 118 | NZL19801006 | VENNELL, Jeremy | BPC | 17:26:26 | 00:12:27 |
| 37. | 17 | USA19910313 | RATHE, Jacob | GRS | 17:26:27 | 00:12:28 |
| 38. | 145 | USA19910824 | MANNION, Gavin | BCT | 17:26:43 | 00:12:44 |
| 39. | 73 | ESP19770917 | FLECHA, Juan Antonio | VCD | 17:26:49 | 00:12:50 |
| 40. | 36 | FRA19820202 | MOINARD, Amael | BMC | 17:26:55 | 00:12:56 |
| 41. | 44 | AUS19861002 | DOCKER, Mitchell | OGE | 17:27:16 | 00:13:17 |
| 42. | 1 | GER19710917 | VOIGT, Jens | RLT | 17:29:03 | 00:15:04 |
| 43. | 108 | GER19860326 | VOSS, Paul | TNE | 17:29:15 | 00:15:16 |
| 44. | 87 | USA19771208 | LOUDER, Jeffry | UHC | 17:29:19 | 00:15:20 |
| 45. | 24 | BEL19851205 | MEERSMAN, Gianni | OPQ | 17:29:23 | 00:15:24 |
| 46. | 137 | CUB19790407 | ROMERO AMARAN, Luis | JSH | 17:29:43 | 00:15:44 |
| 47. | 148 | BEL19920417 | STUYVEN, Jasper | BCT | 17:30:35 | 00:16:36 |
| 48. | 96 | CAN19830110 | ROTH, Ryan | CSS | 17:31:09 | 00:17:10 |
| 49. | 116 | USA19730903 | MCCARTY, Pat | BPC | 17:31:24 | 00:17:25 |
| 50. | 43 | AUS19781012 | COOKE, Baden | OGE | 17:32:59 | 00:19:00 |
| 51. | 141 | USA19910707 | BROWN, Nathan | BCT | 17:33:09 | 00:19:10 |
| 52. | 68 | SUI19810509 | ZAUGG, Oliver | TST | 17:33:20 | 00:19:21 |
| 53. | 106 | POR19850424 | PIMENTA, Jose Joao | TNE | 17:33:27 | 00:19:28 |
| 54. | 51 | SVK19900126 | SAGAN, Peter | CAN | 17:33:33 | 00:19:34 |
| 55. | 63 | USA19821114 | DUGGAN, Timothy | TST | 17:35:28 | 00:21:29 |
| 56. | 21 | FRA19790630 | CHAVANEL, Sylvain | OPQ | 17:35:53 | 00:21:54 |
| 57. | 4 | ESP19800205 | IRIZAR, Markel | RLT | 17:35:55 | 00:21:56 |
| 58. | 41 | AUS19861020 | SULZBERGER, Wesley | OGE | 17:35:57 | 00:21:58 |
| 59. | 14 | USA19840602 | FARRAR, Tyler | GRS | 17:36:24 | 00:22:25 |
| 60. | 28 | ESP19921104 | VERONA, Carlos | OPQ | 17:36:24 | 00:22:25 |
| 61. | 13 | USA19870219 | FAIRLY, Caleb | GRS | 17:36:35 | 00:22:36 |
| 62. | 66 | DEN19850430 | MORKOV, Michael | TST | 17:36:38 | 00:22:39 |
| 63. | 5 | LUX19920922 | JUNGELS, Bob | RLT | 17:36:54 | 00:22:55 |
| 64. | 65 | AUS19920908 | MCCARTHY, Jay | TST | 17:37:01 | 00:23:02 |
| 65. | 122 | USA19850612 | ANTHONY, Jesse | OPM | 17:37:10 | 00:23:11 |
| 66. | 134 | USA19780922 | JACQUES-MAYNES, Ben | JSH | 17:37:16 | 00:23:17 |
| 67. | 15 | USA19880101 | HOWES, Alex | GRS | 17:38:36 | 00:24:37 |
| 68. | 77 | NED19880118 | VAN POPPEL, Boy | VCD | 17:39:07 | 00:25:08 |
| 69. | 46 | AUS19900926 | MATTHEWS, Michael | OGE | 17:39:29 | 00:25:30 |
| 70. | 143 | CAN19910912 | DUCHESNE, Antoine | BCT | 17:39:33 | 00:25:34 |
| 71. | 125 | USA19820414 | HANSON, Ken | OPM | 17:39:39 | 00:25:40 |
| 72. | 37 | ITA19760225 | PINOTTI, Marco | BMC | 17:39:53 | 00:25:54 |
| 73. | 12 | AUS19900528 | DENNIS, Rohan | GRS | 17:39:54 | 00:25:55 |
| 74. | 22 | BEL19820527 | DE WEERT, Kevin | OPQ | 17:40:22 | 00:26:23 |
| 75. | 138 | USA19810304 | WREN, Tyler | JSH | 17:41:00 | 00:27:01 |
| 76. | 154 | USA19811109 | MILNE, Shawn | 5HR | 17:41:34 | 00:27:35 |
| 77. | 94 | TPE19881102 | FENG, Chun Kai | CSS | 17:41:38 | 00:27:39 |
| 78. | 26 | BEL19910214 | VAN KEIRSBULCK, Guillaume | OPQ | 17:41:58 | 00:27:59 |
| 79. | 64 | DEN19860420 | JORGENSEN, Jonas Aaen | TST | 17:42:09 | 00:28:10 |
| 80. | 92 | IRL19850607 | BRAMMEIER, Matt | CSS | 17:42:20 | 00:28:21 |
| 81. | 107 | AUT19881021 | SCHORN, Daniel | TNE | 17:42:32 | 00:28:33 |
| 82. | 57 | SLO19861125 | KOREN, Kristijan | CAN | 17:42:52 | 00:28:53 |
| 83. | 102 | ITA19870803 | BENEDETTI, Cesare | TNE | 17:42:55 | 00:28:56 |
| 84. | 144 | USA19920728 | EASTMAN, Ryan | BCT | 17:42:55 | 00:28:56 |
| 85. | 117 | USA19770522 | PIPP, Frank | BPC | 17:43:02 | 00:29:03 |
| 86. | 55 | ARG19830418 | HAEDO, Lucas Sebastian | CAN | 17:43:59 | 00:30:00 |
| 87. | 98 | HKG19840605 | WU, Kin San | CSS | 17:44:41 | 00:30:42 |
| 88. | 71 | BEL19861106 | DE GENDT, Thomas | VCD | 17:44:44 | 00:30:45 |
| 89. | 126 | USA19830820 | SOLADAY, Thomas | OPM | 17:45:22 | 00:31:23 |
| 90. | 67 | ITA19740514 | TOSATTO, Matteo | TST | 17:45:39 | 00:31:40 |
| 91. | 85 | USA19790806 | JONES, Christopher | UHC | 17:46:07 | 00:32:08 |
| 92. | 128 | USA19770529 | ZWIZANSKI, Scott | OPM | 17:46:18 | 00:32:19 |
| 93. | 52 | POL19850307 | BODNAR, Maciej | CAN | 17:46:27 | 00:32:28 |
| 94. | 158 | USA19880619 | WILLIAMS, David | 5HR | 17:46:29 | 00:32:30 |
| 95. | 157 | USA19870605 | SWEETING, Robert | 5HR | 17:46:48 | 00:32:49 |
| 96. | 75 | NED19890616 | LINDEMAN, Bertjan | VCD | 17:47:13 | 00:33:14 |
| 97. | 48 | AUS19890608 | MEYER, Travis | OGE | 17:47:32 | 00:33:33 |
| 98. | 62 | AUS19820108 | CANTWELL, Jonathan | TST | 17:47:33 | 00:33:34 |
| 99. | 124 | CAN19850822 | COOPER, Marsh | OPM | 17:49:03 | 00:35:04 |
| 100. | 104 | AUS19870927 | DEMPSTER, Zakkari | TNE | 17:50:28 | 00:36:29 |
| 101. | 53 | CAN19890525 | BOIVIN, Guillaume | CAN | 17:52:21 | 00:38:22 |
| 102. | 35 | NOR19780118 | HUSHOVD, Thor | BMC | 17:54:02 | 00:40:03 |
| 103. | 95 | SLO19811015 | GAZVODA, Gregor | CSS | 17:54:16 | 00:40:17 |
| 104. | 115 | USA19820124 | MCCARTNEY, Jason | BPC | 17:54:31 | 00:40:32 |
| 105. | 146 | NZL19930617 | ORAM, James | BCT | 17:54:35 | 00:40:36 |
| 106. | 132 | USA19861111 | DRISCOLL, James | JSH | 17:55:04 | 00:41:05 |
| 107. | 86 | USA19870618 | KEOUGH, Jake | UHC | 17:55:54 | 00:41:55 |
| 108. | 88 | USA19841215 | MURPHY, John | UHC | 17:55:54 | 00:41:55 |
| 109. | 18 | BEL19810204 | VAN SUMMEREN, Johan | GRS | 17:56:42 | 00:42:43 |
| 110. | 84 | SLO19840901 | ILESIC, Aldo Ino | UHC | 17:58:30 | 00:44:31 |
| 111. | 135 | USA19890109 | MILLER, Carson | JSH | 18:01:26 | 00:47:27 |
| 112. | 72 | BEL19870213 | BOECKMANS, Kris | VCD | 18:09:56 | 00:55:57 |
| 113. | 74 | NED19901104 | KREDER, Wesley | VCD | 18:13:33 | 00:59:34 |
| 114. | 97 | NED19811103 | TRASKEL, Bobbie |