This November, I’m helping The Circuit Trails celebrate 500 miles completed! Each week, I’ll share a puzzle that points to a location on a Circuit Trail in Greater Philadelphia where I’ve hidden a bike lock key. But don’t take it—you just need the password written on the key! The lucky winners will walk away with $50, $100, or $150—but any Puzzler who submits one or more entries will win a collectible Trail Treasures prize card.
For each puzzle, you have six days to find the key and enter the password here. To complete your submission, all you have to do is contribute a moment you’ve experienced on a Circuit Trail. It can be from any time and any trail, and doesn’t have to relate to the puzzle at all. Just share any memorable trail experience—and you’ll be helping The Circuit Trails build momentum for completing the full planned 840+ mile network!
You can also… • Submit a moment without a key password to enter a bonus prize drawing! • Join community members for Toast to The Circuit Trails, a free party celebrating 500 miles at Cherry Street Pier, 5:30–7:30pm on November 12th! (I’ll be there!)
Where: Puzzle videos will be posted on TikTok and Instagram. Bike lock keys will be hidden on Circuit Trails within Philadelphia city limits.
When: • 10am on 11/8/25 • 10am on 11/15/25 • 10am on 11/22/25
Difficulty: ◉◉◎◎◎
Price: Free!
Rules: • One prize drawing entry per puzzle per person. If you participate as a team, each team member may submit their own entries to earn their own prize cards. • Do not trespass or violate any laws while participating in Trail Treasures. • By participating in Trail Treasures, you assume all associated risks and agree not to hold Eric The Puzzler, The Circuit Trails, or the Rails to Trails Conservancy responsible for any liability that results from your participation.
How to participate: When a Trail Treasure video drops, solve its puzzle and go find the key! To enter one or more prize drawings, click here. Drawing winners will be announced six days after each puzzle is posted.
Prizes: Any Puzzler who submits an entry wins a Trail Treasures prize card (mailed on 12/1)! In addition, one Puzzler will be chosen at random each week to win: • Week 1: $50 • Week 2: $100 • Week 3: $150 And if you submit an entry for every single week, I’ll award you a little something extra!
