Related Clues:

• March in mud
• Rising movement
• Trudge, as through mud
• Tiring journey
• Plod heavily
• Upward trip
• Exhausting effort
• Blastoff follower
• Plod through mud
• It's no fun at all
• Upward climb
• Flight start
• Go, as through mud
• Trudge through mud
• Enacts in climb