How high rise in elevation be to be considered a mountain?

There is no universally accepted elevation that defines a mountain, but many geographers consider a rise of at least 1,000 feet (about 300 meters) above the surrounding terrain as a general guideline. In some contexts, elevations of 2,000 feet (approximately 610 meters) or more may be used to classify a feature as a mountain. Local definitions can vary based on geographical and cultural factors. Ultimately, the distinction between hills and mountains can be somewhat subjective.