De Rooy put in a flawless performance to pace the route from Pisco to Nazca, while his team-mate Miki Biasion of Italy finished in third.
Splitting the Iveco pair was Russian Eduard Nikolaev, who landed a top three spot for Kamaz for the first time this year.
Stage Three results:
1 Gerard de Rooy (NED) 2:55:58
2 Eduard Nikolaev (RUS) 2:57:22 +01:24
3 Miki Biasion (ITA) 2:58:29 +02:31
4 Ales Loprais (CZE) 3:00:41 +04:43
5 Pieter Versluis (NED) 3:02:30 +06:32
6 Ayrat Mardeev (RUS) 3:08:49 +12:51
7 Andrey Karginov (RUS) 3:10:48 +14:50
8 Marcel van Vliet (NED) 3:14:34 +18:36
9 Artur Ardavichus (KAZ) 3:14:43 +18:45
10 Martin Kolomy (CZE) 3:15:00 +19:02
