50Ms in the USA

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1. Wild Azalea Trail Challenge
2. San Diego 50 and Trail Marathon
3. Masters of All Terrain: 50K and 50M
4. Avalon 50K/50M Benefit Run
5. Bear Bait Ultras
6. Southern Tour Ultra
7. Arches Ultra
8. AZT Oracle Rumble
9. Skydive Ultra Florida
10. Chehaw Challenge Trail Run
11. Rocky Raccoon 100 Mile Trail Run
12. Jed Smith Ultra
13. Iron Horse Endurance Runs
14. Rocky 50 Miler
15. Febapple Frozen Fifty
16. I Ran Marathons - Valentine Series - Heart
17. Cross Timbers Trail Runs
18. Destin Beach Ultra Runs
19. Jackpot Ultra Running Festival
20. Border to Badlands Ultra