"I will be happy to win. I am not thinking about the course record. If it (course record) comes along, fine. I am not training for it. The conditions can be tough," said the 29-year-old Kenyan who edged out Ethiopian rival Raji Assefa in a photo-finish in last year's race.
The top two finishers clocked an identical 2 hours, 10 minutes and 48 seconds, but the Assefa would be missing from the line-up on Sunday. The course record, 2:09:54, was set by Girma Assefa of Ethiopia two years ago.
This year's lineup has the winner of the inaugural race in 2004, South Africa's Hendrick Ramaala, in the fray.
"It was a tough race last year. But the condition, especially the humidity, was not bad. I don't know (about the conditions) this time," said Moiben who does not have a track pedigree before his switch over to the marathon.
"I tried 800m (track running), but did not make it and went to run marathons," said Moiben - who has won three marathon races in his career.
Ramalaa, who is 40 years old, has returned to the Mumbai event after a nine-year gap and remembers Bollywood celebrities and cricket icon Sachin Tendulkar among those present when he won the title in 2004.
"There were a lot of celebrities from Bollywood, (American Olympic champion) Michael Johnson (brand ambassador) and Sachin Tendulkar witnessing that race. It was kind of my 'lucky' stint in the Athens Olympic year. I failed in the Olympics but then won the New York marathon in the same year," he recalled.
This year's event has attracted 10 men runners who have clocked below 2 hours and 10 minutes in their career and 5 women runners who have run marathons under 2:30.
