Related Clues:

• Tough hikes
• Arduous trips
• Long, hard journeys
• Long, arduous journeys
• Long walks
• Long hauls
• Rough journeys
• Boers' migration et al
• Major hikes
• Real schleps
• Tough slogs
• Pioneers' trips west, e.g
• Walks for miles and miles
• Does the Tour du Mont Blanc, say