Question: How far north of the California border is the town where Hedgebrook is headquartered?

Context paragraphs:
Mokolo: Mokolo is the departmental capital and largest city of the Mayo-Tsanaga department, in the Far North Province of Cameroon.  It is the fourth largest city in the Far North Province, after Maroua, Yagoua, and Kousséri.  It is located in the Mandara Mountains that run along the Cameroonian-Nigerian border.

WGR: WGR, or WGR Sports Radio 550, is an all sports radio station in Buffalo, New York that broadcasts on 550 AM.  It is the flagship station of the Buffalo Bills and Buffalo Sabres, carrying a mostly locally originated sports talk and play-by-play lineup.  Its studios are located in Amherst, New York, and transmitter in suburban Hamburg, New York.  Although it has a power of 5,000 watts, during the day its signal can be heard as far north as Barrie, Peterborough and Kingston, Ontario, as far west as Windsor, Ontario, as far east as Syracuse, and as far south as Sandusky, OH and Youngstown, Ohio.  At night its signal can be heard as far north as Sudbury, Barrie and Peterborough, Ontario, as far west as Guelph, Kitchener and Waterloo, Ontario, as far east as Batavia, and as far south as Jamestown and Olean.  In nearby Erie, Pennsylvania the station has a city-grade signal, primarily in Erie's eastern suburbs.  Under ownership of Entercom, its studios are located on Corporate Parkway in Amherst, New York.

Ashland, Oregon: Ashland is a city in Jackson County, in the State of Oregon.  It lies along Interstate 5 approximately 16 mi north of the California border and near the south end of the Rogue Valley.  As of 2015, the city's population was approaching 21,000.

Ventureño language: Ventureño is a member of the extinct Chumashan languages, a group of Native American languages previously spoken by the Chumash people along the coastal areas of Southern California from as far north as San Luis Obispo to as far south as Malibu.  Ventureño was spoken from as far north as present-day Ventura to as far south as present-day Malibu and the Simi Hills, California.  Dialects probably also included Castac and Alliklik (Campbell 1997:126).

El Centro, California: El Centro is a city in and county seat of Imperial County, California, the largest city in the Imperial Valley, east anchor of the Southern California Border Region, and the core urban area and principal city of the El Centro metropolitan area which encompasses all of Imperial County.  El Centro is also the largest American city to lie entirely below sea level (-42 ft ).  The city, located in the far southeastern corner of California, is near the major Southern California city of San Diego and the Mexican city of Mexicali.

Football Far North Coast: Football Far North Coast (FFNC) is the governing body controlling Association Football on the Far North Coast of New South Wales, Australia.  The name of the organization was changed in late 2005 from Soccer Far North Coast in line with the national governing body which changed from Soccer Australia to Football Federation Australia.

Far North (South Australia): The Far North is a large region of South Australia close to the Northern Territory border.  Colloquial usage of the term in South Australia refers to that part of South Australia north of a line roughly from Ceduna through Port Augusta to Broken Hill.  The South Australian Government defines the Far North region similarly with the exception of the Maralinga Tjarutja Lands.  the Yalata Aboriginal Reserve and other unincorporated crown lands in the state's far west, which are officially considered part of the Eyre and Western region.

Hedgebrook (company): Hedgebrook is an American publicly traded company listed on the OTC Bulletin Board and headquartered in Ashland, Oregon that focuses on mergers and acquisitions in various industries, including aerospace, consumer, energy and health care.  The company was founded in 2004 and is chaired by Brady Brim-DeForest.

Course of the Colorado River: The Colorado River is a major river of the western United States and northwest Mexico in North America.  Its headwaters are in the Rocky Mountains where La Poudre Pass Lake is its source.  Located in north central Colorado it flows southwest through the Colorado Plateau country of western Colorado, southeastern Utah and northwestern Arizona where it flows through the Grand Canyon.  It turns south near Las Vegas, Nevada, forming the Arizona–Nevada border in Lake Mead and the Arizona–California border a few miles below Davis Dam between Laughlin, Nevada and Needles, California California before entering Mexico in the Colorado Desert.  Most of it"s waters are diverted into the Imperial Valley of Southern California.  In Mexico its course forms the boundary between Sonora and Baja California before entering the Gulf of California.  This article describes most of the major features along the river.

California Border Police Initiative: The California Border Police Initiative was a proposed state ballot initiative seeking to amend the California Constitution to create a new state law enforcement agency called the "California Border Police."  Proponents of the initiative failed in their effort to gather enough signatures to get it on the June 2006 statewide ballot.

Supporting paragraphs: Hedgebrook (company) Ashland, Oregon
Answer: 16 mi