Following are a number of back-translations of Mark 1:3:

• Uma: “‘He calls in the wilderness [lit., empty field], he says: ‘The Lord is almost come! Prepare ahead-of-time for him his road. Make-flat ahead-of-time the road that he will pass on.'” (Source: Uma Back Translation)
• Yakan: “There is a person calling in the lonely place (wilderness). This is what he says: ‘Soon the Lord/Leader will come/arrive. Make the way smooth where he will pass! Make the way straight which he will follow!'” (Source: Yakan Back Translation)
• Western Bukidnon Manobo: “He will be in the land where people do not live. And there he will be heard by people who come out to meet him; he will say, ‘The Lord will soon arrive. Clear out the way he will go; straighten out the path he will walk on, which is to say get ready for his coming.'” (Source: Western Bukidnon Manobo Back Translation)
• Kankanaey: “He will shout/speak-in-a-loud-voice in the place that has no inhabitants saying, ‘Prepare where-the Lord who is coming -will-walk so that the path he-will-walk-on will be good.'” (Source: Kankanaey Back Translation)
• Tagbanwa: “‘There is one calling out in the wilderness (lit. place where-one-could-starve), saying, ‘You (pl.) make a trail for the Lord/Chief. Make-direct and improve/make-properly this which he will walk on.'” (Source: Tagbanwa Back Translation)
• Shipibo-Conibo: “This is the word of one calling where no house is: Arrange Owner God’s [Lord’s] path for him. Straighten his little paths.” (Source: James Lauriault in The Bible Translator 1951, p. 32ff. )
• Balinese: “there is the voice of a man crying in the
  barren field thus: ‘Open up a way where the Lord will go, make straight his paths,'” (Source: J.L. Swellengrebel in The Bible Translator 1950, p. 75ff. )
• English translation by Michael Pakaluk (2019): “‘A voice of one crying in the desert, ‘Make ready the way of the Lord, make straight his paths!’’),”