Missouri Secondary State Route M is a short east-west highway in Ralls County. This runs northwest of New London. MO Sec St Rt M does not pass through any towns in Ralls County. MO Sec St Rt M is not multi-plexed in Ralls County. MO Sec St Rt M intersects the following highway in Ralls County. U.S. Rt. 61, near New London.
A junction marker on NB U.S. Rt. 61. A guide sign on NB U.S. Rt. 61.
