TriFactor Triathlon & Duathlon 2026 is on Sunday 13 September at Castle Beach, East Coast Park. Flag-off starts from 7am. The race is the Singapore stop of TriFactor's Asian Championship Series, with more than 20 qualifying slots for the World Championships in Quzhou, China in October. Registration for the physical race closes 30 August 2026. There is no race-day entry.
Castle Beach sits at 1220 East Coast Parkway, the same stretch of park Bedok and Marine Parade residents already use at dawn. The course is flat and coastal. Swim in the lagoon, bike the park connectors, run the promenade. Cut-offs are tight enough that you should treat the Long as a real race, not a scenic jaunt.
What you can still enter, and what it costs
Triathlon distances, all individual or relay where listed, with final rates before 9% GST and processing fees:
- Long: 2.25km swim, 42km bike, 15km run. 18+. Cut-off 4 hours 30 minutes. $280 individual.
- Standard: 1.5km swim, 36km bike, 10km run. 18+. Cut-off 3 hours 30 minutes. $250. This is the Asian Championship distance.
- Sprint: 750m swim, 18km bike, 5km run. 16+. $170.
- Freshmen: 200m swim, 12km bike, 2.5km run. 13+. $129.
- Kids: 100m swim, 6km bike, 1.5km run. Ages 6 to 12. $105.
Duathlon drops the swim. Standard is 10km run, 36km bike, 5km run ($170). Sprint is 5km, 18km, 2.5km ($140). Freshmen is 2.5km, 12km, 1.5km ($130). Ages are calculated as of 31 December 2026. Bike rental is advertised on the official race page if you do not want to box a bike through Changi.
If you missed the 30 August cutoff, the only useful role left is spectator. The swim is the easiest place to watch. Stand on the Castle Beach seawall after 7am. The bike out-and-back on East Coast Parkway is less fun for families because of barriers and marshals. The finish chute at the race village is where the noise is after 9am.
This is not the May Run & RunSwim. That race already happened on 10 May 2026 at East Coast Park with about 1,500 athletes and a diesel-free village. September is the full triathlon. Bring a different kit. Open-water practice sessions were listed on the organiser calendar up to 30 August. After that, the last useful session is your own loop at the lagoon on a weekday morning, not race morning.
Getting to Castle Beach from Bedok
Nearest MRT is Bedok (EW5). Bus 31, 197 or 401 (weekends and public holidays) drops you closer to East Coast Park Area F and Castle Beach than walking the park from the town centre. Tanah Merah (EW4) plus bus 31 is the other common approach. Do not drive in expecting a bay next to the start. Race parking fills and the park connectors get closed in sections. Cycle in from Bedok Reservoir Park if you already train there. It is a straight, flat ride down.
Arrive before 6.30am if you are racing. Transition closes earlier than you think, and the Long wave goes off first. Spectators can come later. The event window listed on SportPlus is 6.30am to 11.30am. JustRunLah lists 7am start. Trust the race briefing PDF the organiser emails in the week before, not a listing site.
Enquiries go to enquiry@trifactor.asia. The official page is trifactor.asia. East Coast Park toilets at Area F are the backup if the race village queues are ugly. That is a local habit, not a race tip the organiser will print.
Practical details
- Dates: Sunday, 13 September 2026
- Time: From 7am (athletes should be on site by 6.30am)
- Venue: Castle Beach, 1220 East Coast Parkway, Singapore 468960
- Nearest MRT: Bedok (EW5) or Tanah Merah (EW4), then bus 31
- Price: $105 to $280 before GST, by category. Registration closed 30 August 2026 for the physical race.
- Website: TriFactor Triathlon & Duathlon 2026
