Related Clues:

• Long march
• Tough march
• March through mud, e.g.
• Lumber
• Wade knee-deep
• Tread heavily
• Make slow progress
• Trudge (through)
• Tiresome task
• Chinese money
• Trudge through sludge, e.g.
• Exhausting hike
• Trudge tediously
• Walk laboriously
• Move through mud