I liked these (think this was from last years Houston Marathon)
http://www.runnersworld.com/community/forums/runner-communities/marathoners/signs-houston-marathon
Heres an Interesting story in the Houston Chronicle about how someone's coworkers posted signs every mile for him.
Here are the motivational words for each mile:
• 1. • Lookin' good! (So far. …)
• 2. • Adrenaline got you this far. All guts from here!
• 3. • Seriously, who fartleked?
• 4. • It's all uphill from here.
• 5. • Runner X-ing
• 6. • You're not slow, you're enjoying the course.
• 7. • Relax. You're not going to win.
• 8. • I love the smell of 22,000 runners in the morning.
• 9. • 26.2, because 26.3 would be CRAZY!
• 10. • When Chuck Norris hits walls, they fall down.
• 11. • Johnny Knoxville wouldn't even do this to himself.
• 12. • Only 5.3 miles to finish! (if you take the most direct route)
• 13. • You're already a winner. You won the lottery to get here.
• 14. • Nobody to blame but yourself.
• 15. • Toenails were made to fall off.
• 16. • If you were a Kenyan, you'd be done by now.
• 17. • Shirt, how do thou chafe me? Let me count the ways. ...
• 18. • You paid $115 for this?
• 19. • Sweating = fat cells crying.
• 20. • Your training runs ended here.
• 21. • At this point, it will hurt just as much to walk.
• 22. • Humpty Dumpty fell off the wall you just hit.
• 23. • Graveyard ahead. Look alive.
• 24. • Give me a high five!
• 25. • If pain is temporary, why does this feel like an eternity?
• 26. • Congratulations!!!! Almost. …