Bayel is located some 23 km west by north-west of
Chaumont and 25 km south-east of
Brienne-le-Château. Access to the commune is by the D396 from
Ville-sous-la-Ferté in the south which passes through the commune just west of the village and continues north-west to
Bar-sur-Aube. The D170 goes from the village to join the D396 then south and west to
Baroville. The D47 goes north-east from the village to
Lignol-le-Château. The
TER Grand Est railway from
Troyes to
Chalindrey passes through the commune coming from Bar-sur-Aube station in the north-west and continuing to
Bricon station in the south-east with no station in the commune. The commune is mostly forest with some farmland following the railway line in the west of the commune. The river
Aube flows through the commune and the village forming part of the northern border as it flows north-west to eventually join the
Seine at
Marcilly-sur-Seine. The
Ru du Gravelin rises just east of the commune and flows west to join the Aube. The
Fossé de Six Pieds flows from a small lake in the commune to the Aube. ==Toponymy==