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Approximately 
405 kms (252 mi) from Toronto, 124 kms (77 mi) from Sudbury, 420 kms (261 mi) from Ottawa

Marten River is an unincorporated hamlet located in the municipality of Temagami, in the District of Nipissing, Ontario, Canada. Marten River is considered the gateway to the Temagami area. Coordinates: 46°43′59″N 79°49′05″W