Al Faresi, who was lying 13th at the end of the first day, bettered his standings on Friday to start the final day in the third place.
Riding on 11-year-old Ohio, Al Faresi began the gruelling final day to move into the second place in the first 30km first stage.
But he lost pace and slipped to third place in the second 30km stage to Thani Mohammad Al Muhairi on Akasha Sensation.
Al Faresi, however, gathered pace in the final stage of 20km riding at an average speed of 24kmph to overtake the top two to ride away with the title
Al Faresi covered the total distance in nine hours, 57 minutes and 42 seconds.
Ali Mohammed Al Muhairi, his trainer-cum-rider, said: “This was Al Faresi’s second win and Ohio’s first. The long distance race is different and one must utilise good tactics to achieve good results.”
Omair Hussain Al Belsoushi, astride Oh-Jay, finished in nine hours, 58 minutes and 42 seconds for the second spot while Ali Mohammad Al Muhairi, riding Gazyl Al Sundari, sealed the third place with a total time of 10 hours, one minute and two seconds.
Iqbal Khan Allauddin Khan, leader on the first two days, failed to qualify in the eighth phase.
In the 120km Sheikh Sultan Bin Zayed Al Nayhan Endurance Festival for Junior and Young Riders, Rashed Ahmed Al Bloushi emerged the winner after covering the distance on Silversprings Kabir Arwa in a time of four hours, 47 minutes and 48 seconds.
Abdullah Rashid Mohammed Al Naqbi finished second in a time of four hours, 48 minutes and 26 seconds atop Braka Sidi-Ifni, while Mohammed Hassan Al Hammadi riding Coolaroo Jubal was third.
The CEI 1-star 80km ride was won by Rachel Harriet Harvey on Caramelo in a time of three hours, 27 minutes and 24 seconds. Shamsad Alam Mohammed Zaid took second place on Tres Jolie Endurance (3:47.42) and Michelle du Plessis on Pindarem finished third (3:53.14).
The three-day festival was organised by the Emirates Heritabe Club, in co-operation with the Emirates Equestrain Federation and held under the patronage of Sheikh Sultan Bin Zayed Al Nahyan, Representative of the President and Chairman of Emirates Heritage Club.