On December 19, 2026, WeRun invites runners from all backgrounds to participate in the VI São Silvestre Baía do Seixal. This annual race is organized by the Alto do Moinho Cultural and Recreational Center with support from multiple parish councils within the Seixal municipality, including Arrentela, Paio Pires, Amora, Corroios, and Fernão Ferro. The São Silvestre Baía do Seixal aims to promote physical activity among residents while fostering a sense of community spirit. Participants will enjoy running through scenic routes that showcase the unique landscapes around the Bay of Seixal. The event is not just about competition; it’s an opportunity for runners and spectators alike to come together in celebration of health, fitness, and local heritage. The race route winds past historic landmarks and bustling neighborhoods, offering a blend of urban and natural environments. Runners can expect well-marked paths with ample hydration stations along the way, ensuring that everyone stays hydrated throughout their journey. With its rich cultural backdrop and supportive atmosphere, this event is sure to be an unforgettable experience for runners looking to challenge themselves while enjoying the vibrant community spirit of Seixal. Registration details and further information about the VI São Silvestre Baía do Seixal will soon be available on WeRun's official website. Don't miss out on being part of a day filled with inspiration, camaraderie, and personal achievement. Participants are encouraged to explore the beautiful surroundings beyond the race course as well, taking time to appreciate the local culture and cuisine that make this event truly special.
Races Offered
10K
Dec 19, 2026
straighten
Distance —
10K
terrain
Type —
Running
timer
100 days remaining
sell
€11.00
5km Run/Walk
Dec 19, 2026
straighten
Distance —
5K
terrain
Type —
Running
timer
100 days remaining
sell
€8.00
Weather History
These values represent the 3-year monthly averages for December in Seixal.
thermostatTemperature
8.3° / 15.6°
wb_sunnyFeels like
5.9° / 13.5°
light_mode
Avg sunshine hours
7h 36m
water_drop
Avg rainfall
1.8 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
10.0 km/h (Light breeze)
opacity
Sweat loss rate
Low
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Low (2.0)
humidity_mid
Humidity
84.8%
wb_twilight
Sunrise
08:45
nightlight
Sunset
18:17
Hotels & Places to Stay
Video
Watch highlights and course previews from previous years.
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