Join runners and walkers from across France this autumn as they gather at Parc de Sceaux in Hauts-de-Seine for an unforgettable day of solidarity. The Grand Défi Solidaire is more than just a race; it's a community event dedicated to raising funds and awareness for research against multiple sclerosis, impacting the lives of over 140,000 people across France. Whether you're a seasoned runner or prefer leisurely strolls, there’s something for everyone. Choose from three different routes: a challenging 10 km run for those looking to push their limits; a more relaxed 5 km jog that caters to all paces and abilities; and a family-friendly 2.5 km walk designed with wheelchair users, joëlettes (specialized wheelchairs), and companions in mind. Little ones can also enjoy a fun 1 km route specifically for them. The event takes place within the serene grounds of Parc de Sceaux, offering runners stunning views of nature as they move through its lush trails and gardens. The atmosphere is vibrant and welcoming, with group warm-ups, on-site massages, entertainment booths, and partner exhibits that cater to all participants' needs. Even your furry friends are invited to join the festivities, provided they remain leashed. After crossing the finish line, take a moment to explore Sceaux's beautiful parks or venture into nearby Paris for sightseeing at its iconic landmarks, museums, and charming Haussmann buildings. Alternatively, stay in Sceaux itself to enjoy peaceful strolls through 120 hectares of meticulously maintained gardens like Jardin de la Ménagerie and Jardin des Félibres. For those unable to attend the event in person but still wish to contribute, a connected challenge is available throughout October. This allows participants to run anywhere at their own pace over any distance they choose, ensuring everyone can make an impact regardless of location or circumstances. The Grand Défi Solidaire promises not only personal achievement and enjoyment but also meaningful support for a vital cause. Are you ready to lace up your shoes in the name of solidarity?
Races Offered
Challenge connecté
Oct 05, 2026
straighten
Distance —
Challenge connecté
terrain
Type —
Running
timer
4 days remaining
sell
€15.00
Marche 5 km
Oct 18, 2026
straighten
Distance —
5K
terrain
Type —
Running
timer
09:30
sell
€27.00
Marche 2,5 km
Oct 18, 2026
straighten
Distance —
2.5K
terrain
Type —
Running
timer
09:40
sell
€22.00
Course sur route 5 km
Oct 18, 2026
straighten
Distance —
5K
terrain
Type —
Running
timer
10:00
sell
€37.00
Course sur route 10 km
Oct 18, 2026
straighten
Distance —
10K
terrain
Type —
Running
timer
10:30
sell
€42.00
LE KM KIDS
Oct 18, 2026
straighten
Distance —
1K
terrain
Type —
Running
timer
12:00
sell
€6.00
Weather History
These values represent the 3-year monthly averages for October in Sceaux.
thermostatTemperature
10.0° / 17.2°
wb_sunnyFeels like
7.5° / 15.0°
light_mode
Avg sunshine hours
6h 23m
water_drop
Avg rainfall
2.9 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
12.5 km/h (Gentle breeze)
opacity
Sweat loss rate
Low
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Low (2.8)
humidity_mid
Humidity
82.0%
wb_twilight
Sunrise
08:12
nightlight
Sunset
18:59
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