Marathon Airport (CYSP), Ontario
Landing essentials
Whether you can land, whether you can refuel, and how customs works here.
Overview
Marathon Airport (CYSP) serves the Marathon, Ontario area with a single paved runway. Traffic here is limited, placing it among the lower-volume fields tracked in FAA TFMSC data.
Runways
Marathon Airport has one paved runway, 16/34, 3,933 ft long and 100 ft wide, with an asphalt surface.
Runway geometry from published threshold coordinates. Not for navigation.
Source: FAA Form 5010.
Customs
Marathon Airport does not clear customs. The nearest port of entry is Thunder Bay International Airport (CYQT), 121 NM away.
Source: CBSA list of airports of entry.
Business aviation traffic
Marathon Airport recorded 444 business aviation movements in 2025. Traffic peaks in November. Business aviation traffic at CYSP shows month-to-month variation through the year, with activity peaking in November and dipping in February, according to FAA TFMSC data.
Cross-border movements to the United States, FAA TFMSC count. Peak month November, 49 movements in 2025.
FAA TFMSC records a movement outside the United States only when the flight enters US airspace. This is cross-border traffic, not total activity at the airfield.
Source: FAA TFMSC, cross-border movements, 2025.
Nearby airfields
Marathon Airport has one airfield within 28 NM. The closest is Manitouwadge Airport (CYMG), 27.45 NM northeast.
Source: Skystar calculation from official coordinates.
Skystar at CYSP
We arrange catering, fuel and trip support here. Supplier prices reach you unchanged; our coordination fee sits on its own line.
The same order, priced two ways.
$600.00 catering order at CYSP.
Unchanged.
What the kitchen invoices us is what your quote reads.
One line, fixed.
The $75 minimum applies below $862.50.
At cost.
Passed on at the exact amount the processor took.
Market practice figures are industry averages, not a specific competitor.
Frequently asked questions
Where does CYSP stand relative to customs clearance?
Marathon Airport (CYSP) has no customs service onsite. The nearest customs airport is CYQT, located about 120.6 nautical miles away, so operators arriving from outside Canada should plan clearance there before or after using Marathon.
How long is the runway at Marathon Airport?
Marathon Airport (CYSP) has a single paved runway, 16/34, measuring 3,933 feet long and 100 feet wide with an asphalt surface. This is the only runway available at the field for arriving and departing traffic.
Is business aviation traffic steady year-round at CYSP?
No, traffic at Marathon Airport (CYSP) varies by month. November recorded the highest business aviation activity with 49 operations in 2025, while February saw the lowest at 24, according to FAA TFMSC data.