"The Loneliness of the Long-Distance Walker" is a missing episode in the British comedy series Dad's Army. It was originally transmitted on 15 March 1969. One of the three missing Dad's Army episodes, only a few short clips and screenshots survive in the archives.

To his complete surprise, Walker receives his call-up papers. Mainwaring tries his best to get the authorities to reconsider.

When Walker is called up, he applies to the Military Service Hardship Committee, which rejects him on the grounds that he does not keep books for his business. After Jones's attempts to sabotage his medical test fail, Walker is invalided out because he is allergic to corned beef.

1. This episode was originally planned for transmission on 20 January 1969.
2. This is one of the three missing Dad's Army episodes, after the tape was wiped by the BBC for reuse. The other two are A Stripe for Frazer and Under Fire.
3. UKTV Gold commissioned recreations of all three missing episodes. The remake of this episode was first broadcast on 25 August 2019.
4. In the remade episode, two cast members have a link to David Croft, Julia Deakin was in Oh Doctor Beeching! and Andrew Havill was in the 2016 film of Dad's Army.
5. In 2023, a new animated version of this episode was broadcast as one of a series of animated recreations of all of the missing episodes. Owing to the audio of the broadcast episode also being missing, the radio series episode was used instead

• Croft, David; Perry, Jimmy; Webber, Richard (2000). The Complete A-Z of Dad's Army. Orion. ISBN 0-7528-4637-X.

• "The Loneliness of the Long Distance Walker" (original episode) at IMDb
• "The Loneliness of the Long Distance Walker" (recreated episode) at IMDb