Oregon Route 413 (OR 413) is an Oregon state highway running from Cornucopia to Halfway. OR 413 is known as the Halfway-Cornucopia Highway No. 413 (see Oregon highways and routes). It is 11.45 miles (18.43 km) long and runs northwest to southeast, entirely within Baker County.

OR 413 was established in 2003 as part of Oregon's project to assign route numbers to highways that previously were not assigned, and, as of July 2017, was unsigned.

OR 413 begins at Elk Creek in Cornucopia and heads southeast through Carson and Jimtown to Halfway, where it ends at an intersection with OR 414 and OR 86 Spur. Its northernmost 6 miles (9.7 km) are unpaved and narrow, and is closed by snow in the winter.

The Halfway-Cornucopia Highway was established in 1935 with the division of the old Baker-Cornucopia Highway into the Baker-Halfway Highway No. 12 and the Halfway-Cornucopia Highway. OR 413 was assigned to the Halfway-Cornucopia Highway in 2003.

The entire route is in Baker County.

Location	mi	km	Destinations	Notes
Cornucopia	0.00	0.00
Halfway	11.45	18.43	OR 414 / OR 86S – Richland, Baker City, Oxbow, Hells Canyon Dam
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

• Oregon Department of Transportation, Descriptions of US and Oregon Routes, https://web.archive.org/web/20051102084300/http://www.oregon.gov/ODOT/HWY/TRAFFIC/TEOS_Publications/PDF/Descriptions_of_US_and_Oregon_Routes.pdf, page 31.
• Oregon Department of Transportation, Halfway-Cornucopia Highway No. 413, ftp://ftp.odot.state.or.us/tdb/trandata/maps/slchart_pdfs_1980_to_2002/Hwy413_1996.pdf
• Oregon Highways, Baker City-Copperfield Highway #12 (Archive), https://web.archive.org/web/20050206182806/http://www.ylekot.com/orehwys/hwy-12.html