Marathon Airport — Marathon, Canada

Marathon Airport, coded YSP, serves the small town of Marathon on the northern shore of Lake Superior in Ontario, historically tied to the pulp and paper industry and more recently to gold mining exploration nearby. The airport offers scheduled regional service connecting Marathon to Thunder Bay, supporting residents and workers in this isolated Trans-Canada Highway community. YSP also handles general aviation traffic and provides emergency medical evacuation capability given the town's distance from larger hospitals. Marathon's proximity to Pukaskwa National Park draws outdoor enthusiasts, some of whom use YSP as an access point for wilderness hiking and Lake Superior coastal exploration.