A site-to-site transport is a special type of transport where the object or person being transported is transported from one site directly to another, neither site being a transporter platform. A site-to-site transport is accomplished by first transferring the transporter's target from the site of origin to the pattern buffer of the transporter, in the same manner as the usual "beam in" procedure; instead of being routed to a transporter platform, however, the matter stream is diverted to a second site, in a similar procedure to a conventional "beam out".
Site-to-site transportation is very resource intensive. It consumes twice the energy of a conventional transport (since it is effectively two consecutive transport maneuvers), and requires twice the time in the pattern buffer. It is very useful, however, when time is critical (for example, when a casualty needs immediate attention in sick bay, site-to-site transportation is almost invariably used) or other unusual circumstances. On the other hand, it is almost never used in emergency evacuations of large groups because it would effectively halve the capacity of the transporter system. (TNG: "Brothers")
- Miles O'Brien disabled the site-to-site transport function to stop Data from beaming off the bridge in 2367. The android was able to reactivate it. (TNG: "Brothers")
- Wesley Crusher created a site-to-site transport program in 2368 to avoid being captured by the crew. (TNG: "The Game")
- Captain Benjamin Sisko and Senator Vreenak used site-to-site transport in 2374 to avoid the Romulan from being seen by the populace of Deep Space 9. They transported from the wardroom to a holosuite. (DS9: "In the Pale Moonlight")