The Run, which was flagged off by His Royal Highness Prince Hj Sufri Bolkiah, the Brunei Darussalam National Olympic Council (BDNOC) president, was held at the Hassanal Bolkiah National Stadium in Berakas.
"I didn't train solely for this race," said Sefli, 35, who is a police officer. "I just like to run during my free time. I wake up around 4.30am every day to run and from 5pm to 7pm I would do another round," added Sefli, who used to be a national runner.
He joined the national team in 1999 and retired back in 2005.
At present he trains various local runners and also coaches the SEF (Sport, Endurance and Fitness) team.
He was followed by Zulkifli Liman while Rudin Takong took third place at yesterday's race.
The Olympic Day Run was open to the public and divided into six categories: Boys' Under-15 (6km), Girls' Under-15 (5km), Men's Under-49 (10km), Men's 50 and Above (5km), Women's Open (5km) and Athletes with special needs (2km).
The special needs category was sub-divided into six categories where Jarinah Rungging bagged the first prize for the Blind Open.
In the 16 and above hearing disabilities category, Hj Zulkhairi Hj Md Tahir, who also won last year, took first place while the Under-16 title went to Md Khairulnuddin Hj Kula.
The Wheelchair Open saw Nurul Izzati Md Asri come in first place.
In the intellectual disabilities category for Under-15, Amiruddin Hj Md Zain took the top spot while Razali Subi was the fastest in the intellectual disabilities category for boys and girls aged 16 and above.
Andre Fadly Simon, who also competed in the recently-concluded Youth Sports Festival for the National Schools Sports Council in athletics, won the Boys' Under-15 category, followed by Mohd Fairie Shah Roslan, last year's winner, and Ahmad Norazwan Jamdan.
P Ramlee captured the Men's 50 and Above category, followed by Hj Midon in second and Hj Md Ali Hj Bini in third place.
The Women's Open was won by Tan Siew King, with Linda Rawshaw and Asmahan Mattamin finishing runner-up and second runner-up respectively.
Safriaforhanina Yayah clinched the Girls' Under-15 category, while Nurulmahirah Miramit and Amalina@Lian Gafar finished second and third respectively.
Thousands gathered before dawn at the stadium to register for the race. Some 1,462 participated in this year's event - a bigger turnout compared to last year's race.
For the first time this year a drawing and colouring competition was held in conjunction with the Olympic Day Run on June 19 - with the prizes given out yesterday.
His Royal Highness Prince Hj Sufri Bolkiah also joined the Run - competing in the Men's 50 and Above category.
The HRH later presented the prizes to the winners.
His wife, YAM Pengiran Bini Hajah Faezah. also attented the event and presented prizes to winners of the drawing and colouring competition.
Co-organised by the BDNOC and the Department of Youth and Sports, the event is held every year to commemorate the birth of the modern Olympics in 1896.
Courtesy from Brunei Times