Related Clues:

• Hard walk from pirates ordered
• Pair set out for long tiring walk
• Hit hard — hard work
• Plod — trek
• Laborious process
• Uphill climb, say
• Plod's correct about Director-General!
• Left halfway through really good work
• Rough going
• Interminable task
• Make slo-o-o-ow progress
• Long walk exciting a priest
• Struggle through snow
• In horse-drawn vehicle heading south-east I travel wearily
• Laborious task