Related Clues:

• Take to the trail
• It might follow 'one, two, three'
• Play-starting shout
• Raise, as prices
• Go backpacking
• Walk in the woods
• Cost increase
• Boost in price
• Serious stroll
• Nature walk
• Go on foot
• Raise sharply
• Boot camp outing
• Type of scout outing
• Wilderness trek