How long has it been since the Cowboys won a road playoff game? So long ago that 31 players on the Cowboys' 53-man roster weren't even born yet.
The last road playoff victory for the Cowboys was the 1992 NFC Championship Game (played on January 17, 1993) at Candlestick Park. The Cowboys beat the 49ers to earn the right to play in Super Bowl XXVII which would be the first of three Cowboys' Super Bowl championships in the 1990s.
(Super Bowls are played at neutral sites and do not count as "road" games for either team.)
To put the date of the last playoff road win in perspective, Cowboys starting nose tackle Antwaun Woods was two weeks old on that day when the Cowboys won at Candlestick.
Peggy Prescott was 3 months pregnant with her third child, a son she would name Rayne Dakota. Baby "Dak" was born six months later in July, 1993.
Current stars like Zeke, Amari Cooper, and Leighton Vander Esch were not yet gleams in their daddy's eyes. Rod Smith was 1 year old, but his little brother, Jaylon, was a couple years away.