The Festi'Vallée d'Igny, an unmissable annual festival in the Bièvre valley
The Festi'Vallée d'Igny is the town's flagship annual festival, co-organised by the town hall and the entertainment committee. Every September, over 10,000 festival-goers gather for two days of concerts, children's entertainment, an artisan village, a varied food offering, and an evening fireworks display. A popular and friendly event in the beautiful Bièvre valley.
The Festi'Vallée is the unmissable annual festival of the town of Igny (91430), a green commune in the Bièvre valley in Essonne. Co-organised by the town hall and the municipal entertainment committee, this event welcomes over 10,000 festival-goers over two days each year, making it one of the most important popular gatherings in the Paris-Saclay area.
The Festi'Vallée takes place every year in September, marking the end of summer in the most beautiful way. The program, carefully prepared by the organisers, is designed to satisfy all generations and desires.
On Saturday, festivities open at 10 AM with the Trifouillette kids, a morning of entertainment specially dedicated to the youngest, then stretch until midnight with a dense musical program. The highlight of the evening is a fireworks display that illuminates the valley and brings together spectators of all ages in shared wonder.
Sunday in turn opens with the Trifouillette adulte, a sporty and friendly morning, before continuing with concerts, entertainment, and the artisan village until 6:30 PM. The relaxed atmosphere of Sunday afternoon contrasts pleasantly with the effervescence of Saturday evening.
The musical program of Festi'Vallée is one of the event's great strengths. Each edition offers several concerts covering a wide musical spectrum: rock, French chanson, pop, world music. Local bands perform alongside regional or national artists, in a spirit of discovery and accessibility that reflects the values of the event. The main stage of Festi'Vallée is a springboard for many artists from Essonne.
One of the unique features of Festi'Vallée is its artisan village, which hosts local and regional creators. Jewelers, ceramists, makers of artisanal food products, textile designers: the village stands allow visitors to discover and acquire unique products while supporting local craftsmanship. This ephemeral market is particularly appreciated by residents concerned with responsible consumption and connection with producers.
The Festi'Vallée offers a particularly comprehensive catering selection. Local associations run stands, providing opportunities to taste various specialties while supporting local community life. Food trucks complement the offering with world cuisine proposals. The conviviality of meals shared with family or friends is one of the essential dimensions of the event.
The town of Igny, nestled in the Bièvre valley, is a human-sized commune that carefully cultivates its associative fabric and cultural life. The entertainment committee, a historical partner of the town hall, plays a central role in organising the Festi'Vallée and many other events throughout the year. This collaboration between the municipality and the associative world guarantees an event rooted in the realities and aspirations of the population.
The Festi'Vallée d'Igny 2026 will take place on Saturday, September 12th and Sunday, September 13th, for two days of celebration. Concerts, Trifouillette, an artisans' village, food stalls, and fireworks are on the program, in the beautiful Bièvre valley.
The Festi'Vallée 2026 will once again bring together the residents of Igny and visitors from all over Essonne, on Saturday, September 12th and Sunday, September 13th, for two festive days at the Prairie de Saint-Nicolas. The Trifouillette kids, concerts, the artisans' village, associative food stalls, and the Saturday evening fireworks will faithfully be there. An event that confirms its status as a must-attend event for the back-to-school season in Essonne, co-organized by the town hall and the Igny animation committee. The detailed program (concerts and schedules) is generally published at the end of summer by the animation committee (igny-animation.fr).
Prairie de Saint-Nicolas, 14 avenue Jean-Jaurès, 91430 Igny.
By RER: RER C, Igny station.
By car: Prairie de Saint-Nicolas, 14 avenue Jean-Jaurès, 91430 Igny.
By bike: Bièvre valley cycle path.
Saturday from 10 AM to midnight — Sunday from 10 AM to 6:30 PM.
Free admission for most activities.
Igny Town Hall: 01 69 33 11 19
Official website: igny.fr
Entertainment Committee: igny-animation.fr
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Prairie de Saint-Nicolas
14 avenue Jean-Jaurès, 91430 Igny, 91430 Igny