Garmin Run Marathon Series Singapore 2026: Official 21.1km & 10km Race Route Walkthrough

The official race routes for the Garmin Run Marathon Series Singapore 2026 have officially been revealed today on Garmin Singapore's socials.

Returning for its third edition on Sunday, 25 October 2026, the flagship event flags off from Marina Barrage, taking thousands of runners across Singapore’s most iconic waterfront landscapes and flat park connectors.

Whether you are targeting a personal best in the 21.1km Half Marathon or gearing up for a swift 10km morning dash, here is an in-depth walkthrough of the newly released course profiles, elevation characteristics, and on-course hydration plans.  

Runners will navigate the Kallang Basin and National Stadium perimeter, head eastward through the Tanjong Rhu connection into East Coast Park (ECP), execute a turnaround past the 14km mark, and make their way back toward Marina Barrage for the finish.

• Cut-off Time: 4 hours

• Hydration Points: 8 Aid Stations  
  

21.1km Half Marathon Route: Course Walkthrough & Tactical Breakdown

The Half Marathon course is designed as an ultra-fast, scenic coastal route connecting the city basin to the East Coast Park corridor.  

1. The Opening Surge: KM 1 to KM 5 (Marina South to Helix Bridge)

The race flags off directly outside Marina Barrage, looping along Marina South before heading north across the Marina Bay waterfront. Runners will cross over the Helix Bridge near the 3km mark, taking in views of the skyline before hitting the first hydration point at AS 1 (2.5 km).  

2. The City Link: KM 5 to KM 10 (Kallang Basin & Tanjong Rhu)

Past the 4km mark, the route runs adjacent to Nicoll Highway and navigates the loop along the Kallang Basin and the National Stadium perimeter. Expect smooth tarmac and wide turns as you pass AS 2 (6.0 km) and AS 3 (7.8 km). A scenic loop around Tanjong Rhu Promenade then funnels runners across the connector toward East Coast Park.  

3. The Long Haul: KM 10 to KM 17 (East Coast Park Out-and-Back)

Entering East Coast Park at KM 11, runners will settle into their aerobic cruise pace along flat park connector pavements. Bananas and hydration will be available at AS 4 (11.6 km). The easternmost turnaround point sits just after AS 5 (14.3 km), where runners double back westward towards the city, passing AS 6 (16.2 km) and AS 7 (17.2 km).  

4. The Final Stretch: KM 18 to Finish (Marina East back to Barrage)

Exiting ECP at KM 18, the home stretch takes runners along the Marina East perimeter. After topping up at AS 8 (20.0 km), you will make the final push across the waterfront toward the roaring finish line arch at Marina Barrage.  

• 10km Aid Station MatrixCut-off Time: 2 Hours 30 Minutes

• Course Support: 3 Aid Stations spaced ~2.5km to 3km apart  

10km Category: Course Walkthrough & Tactical Breakdown

The 10km route delivers an energetic, spectator-friendly loop along the inner basin of the Marina.  

1. Opening Burst: KM 1 to KM 4

Sharing the early route with the half marathoners, the 10km field takes off from Marina Barrage, rounding Marina Gardens Drive before heading across the Helix Bridge. Hydration is positioned early at AS 1 (2.5 km). 

2. Mid-Race Rhythm: KM 4 to KM 7

After bypassing the stadium loop, runners sweep along Republic Avenue and cross into Tanjong Rhu. The shaded riverside turns provide a steady section to lock in target paces, with support available at AS 2 (6.0 km). 

3. The Sprint Finish: KM 8 to KM 10

Hitting AS 3 (7.8 km), the route runs straight down Marina Gardens Drive with clear line-of-sight views of the Barrage, culminating in a fast, flat sprint finish back at the race village.  10km Aid Station Matrix

• Cut-off Time: 2 Hours 30 Minutes

• Course Support: 3 Aid Stations spaced ~2.5km to 3km apart