The federal government shutdown is emerging as an ominous hurdle for marathon runners preparing for upcoming races that use national parks, including the New York City Marathon.
Several smaller races have already postponed or canceled events and New York City organizers are looking at contingency plans for its 48,000 runners on Nov. 3 since the race's early morning staging ground is Staten Island's Fort Wadsworth.
"Fort Wadsworth is a national park and is currently impacted by the government shutdown. NYRR is working closely with our city, state and federal partners to establish contingency plans in case they are ultimately needed," the New York Road Runners race organizers said in a statement emailed to CNBC.
When asked if that means NYRR has ruled out a cancellation, the spokesperson replied that "contingency plans are focused on conducting the race November 3."
(Read more: Bankruptcy fears amid park shutdowns)
The 2012 NYC marathon was abruptly called off in the wake of Hurricane Sandy, angering many runners, and angering many residents that the event wasn't canceled sooner and its resources diverted to rescue efforts. The hurricane's ultimate economic impact to the region was calculated above $50 billion with more than 100 deaths.