|region||Pays de la Loire|
|Community association||Gesnois Biluria|
|surface||34.69 km 2|
|Residents||2,688 (January 1, 2017)|
|Population density||77 inhabitants / km 2|
Saint-Mars-la-Brière is a French commune in the department of Sarthe in the region Pays de la Loire . It belongs to the arrondissement of Mamers and the canton of Savigné-l'Évêque (until 2015: canton of Montfort-le-Gesnois ). On January 1, 2017, the municipality had 2,688 inhabitants called Briérois .
Saint-Mars-la-Brière is about 15 kilometers east of Le Mans on the Huisne River . Saint-Mars-la-Brière is surrounded by the neighboring communities of Saint-Corneille in the north, Montfort-le-Gesnois in the northeast, Soulitré in the east, Ardenay-sur-Mérize in the southeast, Parigné-l'Évêque in the south, Changé in the southwest, Champagné in the west and Fatines in the northwest.
The Saint-Mars-la-Brière train station is on the Paris – Brest railway line . The A11 autoroute as well as the former Routes nationales 23 (today D323) and 157 (today D357) lead through the municipality .
- Saint-Médard church from the 16th century
- Saint-Denis-du-Tertre chapel from the 11th and 17th centuries
- Saint-Mars Castle
- Archaeological dig site of a prehistoric settlement