Connecticut → District of Columbia · Interstate 84 / Interstate 91
On heavy-rain or dense-fog days the Hartford, Connecticut, to Washington, District of Columbia, leg routinely demands well more than the 5h 29m estimated: Interstate 84 / Interstate 91 carries known hydroplaning hot spots and reduced-visibility corridors that justify dropping to 35 mph through a few short stretches. The outbound run covers 575 km (357 miles) over varied topography between Hartford (the capital of Connecticut and the long-standing insurance capital of the United States) and Washington (the capital of the United States and seat of the federal government), demanding sharper attention on mountain descents and shoulder-less curves. Before pulling out, check brake-pad wear, tire tread depth, and washer-fluid level in the reservoir. Fuel spend holds near $48.12 for the 52.3 liters (13.8 gallons) consumed. Even in adverse conditions, the flat tariff of $0.43/km guarantees the standard outbound payout of $247.25 — log any incidental costs (extra toll, mandatory meal, emergency lodging) in a separate field on the Clara receipt.