I will keep this list maintained. If you would like to be added to the leaderboard, please post a screenshot of your flight and say what your setup was.
Edit: If I miss your post, send me a PM.
1. Keith M. - 50,912 ft - ItElite DBS MaxxRange Antenna, Battery Mod
2. Chuck R. 46,066.5 ft - ItElite DBS MaxxRange Antenna, Battery Mod
3. Mohan De Silva - 43,253.7 ft - Horizon Terminator - Battery Mod
4. Fanti - 38,322 ft - ItElite MaxxRange Antenna, Battery Mod
5. Fast13 - 32.447 ft - ItElite DBS Antenna, Unboosted
6. GadgetGuy - 30,590 ft - ItElite DBS Antenna, Boosted
7. oblivie - 26,583 ft - ItElite DBS Antenna, Unboosted
8. josephtarlecky - 24,211 ft - ItElite DBS Antenna, Boosted
9. Jake (Maxx UAV) - 24,048 ft - ItElite MaxxRange, Boosted
10. KykPhantom - 23,400 ft - Stock
11. TheLightSpeedz - 23,072 ft - ItElite MaxxRange, Unboosted
12. Jeremiah Nelson - 22,626 ft - L-com 8.5dbi Antenna, Boosted
13. koreysmith123 - 22,390 ft - Stock
14. FLPTFLYER - 22,327 ft - ItElite DBS Antenna, Unboosted
15. Fredz - 22,169 ft - FPVLR, Unboosted
16. ringolong - 21,586 ft - ItElite MaxxRange, Unboosted
17. YoungBlood - 21,478 ft - MaxxRange, Unboosted, Battery Mod
18. SolarDude - 20,802 ft - MaxxRange, Unboosted
19. BriRi - 20,791 ft - Windsurfer
20. Ramphex - 20,545 ft - ItElite DBS Antenna, Unboosted
21. KykPhantom - 20,474 ft - Stock
22. Phantomfreak - 20,145 ft - Windsurfer
23. adambfarmer - 20,068 ft - Stock
24. r62ewa - 20,006 ft - Stock
25. Fallguy - 19,486 ft - ItElite MaxxRange Antenna, Boosted
26. Ozziebattler - 19,460.7 ft - Windsurfer
27. Kman - 19,335.7 - Stock
28. phantom13flyer - 19,114 ft - ItElite MaxxRange Antenna - Unboosted
29. audis200 - 18,676 ft - ItElite DBS Antenna, Boosted
Hey Jake, it looks like you have me down incorrectly. I have the max range antenna as well as a battery mod. Just thought I'd let you know what the correct information was.