The site's distances are modest - the core loop is about 2.5 km of flat, gravel-and-limestone paths - but the surfaces are uneven underfoot and shade is scarce. Wheelchair access exists at the entrances and along the main axis, though the platforms themselves are stepped; the Viator listing states plainly that it is not wheelchair accessible, which is a statement about its office redemption rather than the site's policy. Entry is free or discounted for Mexican disabled visitors and a companion with credentials.
Practical advice for anyone with limited mobility: enter at 8:00 (cool and empty), keep to the central axis (El Castillo, Ball Court, Temple of the Warriors), treat the outlier groups as optional, and hire one of the licensed guides at the entrance who walk at the group's pace for MXN $800-1,800.