The annual Seaside Coastal Run, now in its eleventh year, takes place on November 15th at Semaphore South in South Australia. Organized by RUN YELLOW and supporting the Australian Cancer Research Foundation (ACRF), this event promises a stunning coastal setting with breathtaking views of the sea and lush greenery. Participants can expect an early morning start under overcast skies, with temperatures hovering around 18°C, providing a comfortable environment for runners and walkers alike. The race offers three distinct distances: 5km, 10km, and half marathon (21.1km), each presenting unique challenges along the coastal bike/walk path. The course is meticulously measured at exactly 10.55km to ensure that all participants enjoy a loop returning them within about 5km of aid stations. Although a slight breeze with an average wind speed of approximately 13.5 km/h might create a chill, it's unlikely to significantly impact performance given the mild temperatures and low humidity around 64%. Registration begins at South Tce from 6:15 am, allowing participants ample time to check in their bibs and gather before the seven o'clock start. Virtual runners are welcome too; they can contribute A$25 to participate independently. Semaphore South residents often stretch along the path or prepare gear at designated pickup areas, adding a sense of community to this event that has maintained its measured course format since inception. First-time participants are encouraged to arrive early for familiarization and a smoother start. Beyond personal achievement, this year's Seaside Coastal Run emphasizes giving back by supporting an important cause. It is certified by AIMS (Association of International Marathons and Distance Races) for the 21km route, ensuring quality standards in race organization. Join us for not just a run but a meaningful contribution to community involvement and personal success.
Races Offered
10km
Nov 15, 2026
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Distance —
10km
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Type —
Running
timer
07:00
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A$25.00
21.1km
Nov 15, 2026
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Distance —
21km
terrain
Type —
Running
timer
07:00
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A$35.00
5km
Nov 15, 2026
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Distance —
5km
terrain
Type —
Running
timer
07:00
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A$20.00
Virtual Run
Nov 15, 2026
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Distance —
Virtual Run
terrain
Type —
Running
timer
07:00
sell
A$25.00
Weather History
These values represent the 3-year monthly averages for November in Semaphore South.
thermostatTemperature
12.9° / 22.5°
wb_sunnyFeels like
10.5° / 20.0°
light_mode
Avg sunshine hours
11h 26m
water_drop
Avg rainfall
1.6 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
13.4 km/h (Gentle breeze)
opacity
Sweat loss rate
Moderate
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Low (2.0)
humidity_mid
Humidity
63.9%
wb_twilight
Sunrise
05:02
nightlight
Sunset
18:58
About Semaphore South
Learn more about the host city, Semaphore South.
Semaphore South is a beachside suburb of Adelaide, in the City of Port Adelaide Enfield.
