<page_title> List of county routes in Suffolk County, New York (76–100) </page_title> <section_title> County Route 100 </section_title> <table> <cell> Brentwood <col_header> Location </col_header> </cell> <cell> CR 13 <col_header> Destinations </col_header> <row_header> 0.0 </row_header> </cell> <cell> Continues west as a Town of Islip Road <col_header> Notes </col_header> <row_header> 0.0 </row_header> </cell> <cell> Islandia <col_header> Location </col_header> <col_header>  </col_header> </cell> <cell> NY 454 <col_header> Destinations </col_header> <row_header>  </row_header> </cell> <cell> Continues northeast as Old Nichols Road <col_header> Notes </col_header> <row_header>  </row_header> </cell> </table>
Suffolk County Road 100, is the main west-to-east route, running from the Suffolk County Road 13 in Brentwood to New York State Route 454 in Islandia.