Maximum Travel Distance to Exit by Occupancy: A Complete Reference Table

Travel distance is the actual walking distance an occupant travels from the most remote point in an occupied space to the entrance to an exit (the door of a stair enclosure, the door of an exit passageway, or the exit door of the building). It is measured along the natural path of travel — around corners, around partitions and around fixed furniture — not as a straight line. The path is centered between obstructions and uses a one-foot diagonal at corners. IBC Section 1017.3 sets the measurement rules; NFPA 101 Section 7.6 contains the equivalent. Travel distance starts at the most remote occupiable point in the space (the corner of an office or the back of a stack room, not just the door of the room) and ends at the entrance to the exit — additional distance traveled within the exit (down a stair, through an exit passageway) is not counted. The result is that travel distance is always measured on the floor plan, never on a stair section.

IBC Table 1017.2 gives the maximum exit access travel distance by occupancy. Without sprinklers: A, E, F-1, M, R, S-1 at 200 ft; B at 200 ft; H-1 at 75 ft; H-2 at 100 ft; H-3 at 150 ft; H-4 at 175 ft; H-5 at 200 ft; I-1, I-2 at not permitted (sprinklers required); I-3 at 150 ft; I-4 at 150 ft; U at 300 ft. With NFPA 13 sprinklers: A, E, F-1, R-2 at 250 ft; B, F-2, S-2, U at 300 ft; M at 250 ft; H-1 at 75 ft; H-2 at 100 ft; H-3 at 150 ft; H-4 at 175 ft; H-5 at 200 ft; I-1 at 250 ft; I-2 at 200 ft; I-3 at 200 ft; I-4 at 200 ft; R-1 at 250 ft; R-3, R-4 at 250 ft; S-1 at 250 ft. Open parking garages get extended limits up to 400 ft. The table assumes the sprinkler is a full NFPA 13 system; NFPA 13R sprinklers in low-rise residential buildings give the sprinklered allowance for R-2 but not for other use groups.

NFPA 101 sets travel distance limits in each occupancy chapter rather than in a single table. The numbers are close to but not identical to the IBC. For business, NFPA 101 Section 38/39.2.6 sets 200 ft unsprinklered and 300 ft sprinklered, matching the IBC. For mercantile (NFPA 101 Section 36/37.2.6), the limits are 100 ft unsprinklered (Class A) and 250 ft sprinklered. For assembly (NFPA 101 Section 12/13.2.6), 200 ft unsprinklered and 250 ft sprinklered. For healthcare (NFPA 101 Section 18/19.2.6), the rule is two-part: travel distance to a smoke compartment barrier is limited to 150 ft, and travel distance to an exit is limited to 200 ft, with both limits applying simultaneously. For residential (NFPA 101 Sections 28/29 for hotels and dormitories; 30/31 for apartments), travel limits run from 175 ft unsprinklered to 325 ft sprinklered. For educational, 150 ft unsprinklered and 200 ft sprinklered. For day care, 150 ft unsprinklered and 200 ft sprinklered. For storage and industrial, limits depend on hazard classification and range from 75 ft for high-hazard to 400 ft for low-hazard sprinklered.

IBC Section 1016.2 lists conditions under which egress through an intervening room is permitted: the intervening room must be accessory to the area served, not a high-hazard space, not a kitchen, store room or restroom, and not a space subject to locking. Egress through a foyer, vestibule, lobby, exit access stairway or similar protected space is generally permitted. Egress through adjoining or intervening rooms or areas in a Group H, I-2, I-3 or I-4 occupancy is generally not permitted except as specified in the occupancy chapter. Travel through a courtyard or open parking deck is permitted to count as exit access travel only if the open space provides safe means of travel to the exit discharge. Egress through a vestibule must remain unobstructed and must be sized for the cumulative load of the spaces it serves. Posted plans must clearly show whether a route passes through an intervening room and the door of that room must be openable from both sides without keys.

Open-plan office and retail spaces often appear to make travel distance trivial because there are no corridors to constrain the path. The actual measurement is more nuanced: the natural path of travel around fixed furniture, partitions, stairs, columns and decorative features must be used, even when the space is nominally open. A 30,000 ft² retail floor with a single exit at one corner can easily exceed travel distance even though the space is wide open, because the path from the opposite corner curves around fixed displays. For warehouses and large industrial spaces, IBC Section 414 and Section 1017 set extended travel distances tied to the storage commodity class and rack layout. For atria and large assembly spaces, the open volume is treated as a single space and the most remote occupiable point is identified by the actual occupant uses (the rearmost seat of the assembly, the farthest cooking station of the kitchen). For all of these the rule is the same: walk the path, measure with a wheel or scaled drawing, and confirm the longest realistic occupant path stays under the limit.

Travel distance, common path of egress travel and dead-end corridor are three distinct but related limits. Travel distance is the total length from the remote point to the exit. Common path of travel is the portion of travel distance where the occupant has no choice of direction — once they reach a point where they can choose between two exits, the common path ends. Dead-end corridor is a corridor in which the occupant must turn around to escape. All three are limited and must be checked independently. A typical office floor with a 200-ft total travel distance might have a 75-ft common path (the cubicle aisle plus the office door) and a 20-ft dead-end (a stub corridor leading to a window). If the dead-end is extended to 30 ft by adding offices, the travel distance and common path may still be compliant but the dead-end now violates Section 1020.5 in most occupancies. EvacPlan Generator's route-drawing tool lets designers and reviewers draw each path with on-screen distance, making it straightforward to verify all three limits during plan production and before posting the final plan.

Posted evacuation plans rarely show the travel distance in feet because the audience is the building occupant, not the inspector. What the posted plan does show is the route from each significant occupied area to the nearest exit, drawn as a solid green line with arrowheads. Secondary routes are drawn as dashed green lines so occupants understand the alternate paths when the primary is blocked. Decision points — where the occupant can choose between two exits — should be drawn clearly so occupants understand they have options. Dead-end corridors should not be drawn as egress paths; if a stub corridor exists it should be clearly indicated as a non-egress space. Areas of refuge should be marked with the standard symbol. The you-are-here marker on each posted plan locates the reader within the building. EvacPlan Generator (www.evacplangenerator.com) supports drawing primary, secondary and dashed routes; placing arrows that indicate direction of travel; and adding text annotations for decision points, ensuring the posted plan reflects the travel-distance compliant design the AHJ approved.