Mount Blackmore is located in Gallatin National Forest, in the U.S. state of Montana.
 Bozeman is located near the East Gallatin River, Gallatin County, Mount Blackmore is south of the City of Bozeman in the Gallatin Range.
The Bridger Range, also known as the Bridger Mountains, is a subrange of the Rocky Mountains in southwestern Montana in the United States.
 The range runs mostly in a north–south direction between Bozeman and Maudlow.
 It is separated from the Gallatin Range to the south by Bozeman Pass; from the Horseshoe Hills to the west by Dry Creek; from the Crazy Mountains to the east by the Shields River valley; and from the Big Belt Mountains to the north by Sixteen Mile Creek.
 The highest point in the Bridger Range is Sacagawea Peak (9596 ft ), which is visible to the northeast from Bozeman.
The East Gallatin River flows 42 mi in a northwesterly direction through the Gallatin valley, Gallatin County, Montana.
 Rising from the confluence of Rocky Creek and several other small streams, the East Gallatin begins about one mile (1.6 km) east of downtown Bozeman, Montana.
 The river joins the main stem of the Gallatin River 2.3 mi north of Manhattan, Montana.
 Throughout its course, the river traverses mostly valley floor ranch and farm land with typical summer flows of approximately 50 cuft/s
Maudlow is a small unincorporated community in northern Gallatin County, Montana, United States.
 The town was a station stop on the transcontinental main line of the Chicago, Milwaukee, St. Paul and Pacific Railroad ("the Milwaukee Road"), and was a community center for a small number of area ranchers and homesteaders.
 Maudlow was named after a family member of Montana Railroad President, R. A. Harlow, Maud Harlow.
 The first postmaster of the town, George Dodge, shortened the name to Maudlow.
Bozeman Yellowstone International Airport (IATA: BZN, ICAO: KBZN, FAA LID: BZN) (Gallatin Field) is located in Belgrade eight miles (13 km) northwest of Bozeman, in Gallatin County, Montana.
 Owned by the Gallatin Airport Authority, the airport became the busiest airport in Montana in 2013.
Bozeman is a city in and the county seat of Gallatin County, Montana, United States, in the southwestern part of the state.
 The 2010 census put Bozeman's population at 37,280 and by 2016 the population rose to 45,250, making it the fourth largest city in the state.
 It is the principal city of the Bozeman, MT Micropolitan Statistical Area, consisting of all of Gallatin County with a population of 97,304.
 It is the largest Micropolitan Statistical Area in Montana and is the third largest of all of Montana’s statistical areas.
Bridger is a census-designated place (CDP) in Gallatin County, Montana, United States.
 It comprises the Bridger Bowl Ski Area and some nearby residences on the eastern side of the Bridger Range in southwestern Montana.
 As of the 2010 census the Bridger CDP had a population of 30.
Three Forks is a city in Gallatin County, Montana, United States and is located within the watershed valley system of both the Missouri and Mississippi rivers drainage basins — and is historically considered the birthplace or start of the Missouri River.
 The population was 1,869 at the 2010 census.
 The city of Three Forks is named so because it lies geographically near the point, in nearby Missouri Headwaters State Park, where the Jefferson, Madison, and Gallatin Rivers converge to form the Missouri River — the longest single river in North America, as well as the major portion of the Missouri-Mississippi River System from the headwaters near Three Forks to its discharge into the Gulf of Mexico.
 Three Forks is part of the Bozeman, MT Micropolitan Statistical Area of approximately 100,000 people and the greater Bozeman demographic area of approximately 125,000 people.
Nelson Story Jr. (February 15, 1878 – October 21, 1932), also known as Bud Story, was an American politician in the state of Montana who served as Lieutenant Governor of Montana from 1921 to 1925.
 He also served in the Montana State Legislature in the 1902 and 1910 sessions, as mayor of Bozeman, and commissioner of Gallatin County, Montana.
 His father was Nelson Story, a pioneer settler in Bozeman.
 Nelson Jr. was educated at the Shattuck (Minnesota) and Ogden (Utah) Military academies.
 A businessman, he owned a machine shop and iron foundry, served as vice president of a milling company, and was involved in the gold mining industry.
 Story died of a stroke while driving in Bozeman, Montana in 1932.
The Spanish Peaks, avg el.
 8441 ft , is a mountain range between Bozeman, Montana and Ennis, Montana in Gallatin and Madison County, Montana.
 It is a sub-range of the much larger Madison Range, itself a sub-range of the Rocky Mountains.
 The hydrological divide of the range serves as the border between Gallatin and Madison County, Montana.
 The Spanish Peaks are made up of 1.6 billion year-old gneiss, making them the oldest peaks in the Madison Range, predating the rest of the range by 50-60 million years.
 Gallatin Peak, el.
 11,015 ft., is the highest peak in the group.

Question: Which mountain range in Gallatin County, Montana runs mostly in a north–south direction between Bozeman and Maudlow?
Answer: Bridger Range