World record is 45003 metres.

1. XABEN-100 - 45003m (147648 ft)
2. MONDO-10 - 44379m (145600 ft)
3. MONDO-14A - 44165m (144898 ft)
4. STS-6 (second attempt) 43835m (143816 ft)
5. XABEN-25 - 43721m (143441 ft)
6. BUZZ-6 - 43639m (143172 ft)
7. XABEN-26 - 43412m (142391 ft)
8. PAVA - 43337m ( 142181 ft)
9. HAM-1 - 42727m ( 140180 ft )
10. XABEN-24 - 42687m (140049 ft)
11. SEBA-2 - 42650m (139927 ft)
12. ANU-2 - 42545m (139582 ft) Highest Images
13. Buzz 5 - 41882m (137408 ft)
14. PI434/PI868 - 41837m (137260 ft) Highest Live Images
15. Bello Mondo 6 - 41547m (136309 ft)
16. XABEN-32 - 41376m (135748 ft)
17. MORPH - 41311m (135534 ft)
18. Bello Mondo 7 (Mondo 1+2) - 41117m (134898 ft)
19. PIE/TED - 41109m (134872 ft)
20. PIE/TED Try 2 - 41000m (134514 ft)
21. Buzz 2 - 40986 m (134468 ft)
22. PYSY-10 - 40790 m (133825 ft)
23. Horus 15.5 - 40575 m (133120 ft)
24. Cloud 7 - 40570 m (133103 ft)
25. PIE5 - 40350m (132,381 ft)
26. PIE1/UAVA/Buzz - 39994 m (131213 ft)
27. SLAROS/Balkan Space Express I - 39884 m (130853 ft)
28. Bello Mondo 5 - 39854 m (130754 ft)
29. XABEN 16 - 39595 m (129904 ft)
30. Bello Mondo 4 - 39482m (129534ft)
31. PYSY 5 - 39392m (129238ft)
32. STS-1 - 39104m (128293 ft)
33. Bello Mondo 8 - 39021m (128021 ft)
34. Cloud 6 / Bear 1 / Osiris - 38549m (126473 ft)
35. Ava / Cloud 4 - 38278m (125583ft)
36. PAVA4 - 37666m (123576ft)
37. Orion - 37632m (123465ft)
38. ANU-3 - 37575m (123277 ft)
39. Hyperion-1 - 37538m (123156ft)
40. Atlas3 - 37033m (121499ft)
41. Apex Alpha - 36645m (120226ft)
42. Cloud2 - 36250m (118930 ft)
43. Nova 19 / Weasel - 36206 m (118785 ft)
44. XABEN 13 - 36013m (118153 ft)
45. HABE 1 - 35824 m (117533 ft)
46. Space Camera Live 1 - 35784m (117283ft)
47. PYSY 7 - 35820m (117519ft)
48. 5thSCOUT / BUZZ - 35504 m (116483 ft)
49. PYSY 6 - 35437m (116263ft)
50. Icarus II Launch 2 - 35289 m (115778 ft)
51. Nova 11 - 35076 m (115078 ft)
52. Icarus III - 35059 m (115022 ft)
53. Buzz1 - 34695 m (113828 ft)
54. Cloud 5 / ANU 1 34536m (113307 ft)
55. Infinity - 34469m / (113087 ft)
56. hadie:4 - 33559m / (110101.7 ft)
57. Nova 7 - 33281 m (109189.6 ft)
58. Xaben 0 (14 ?) - 33206 m ( 108943.2 ft)
59. ALIEN-1 - 33158 m (108786 ft)
60. Nova 8 - 32880 m (107874 ft)
61. Bello Mondo 3 - 32783 m (107556 ft)
62. Nova 6 - 32461 m (106499.3 ft)
63. HAPS-1 - 32337 m (106092 ft)
64. Bello Mondo 2 - 32313 m (106,014 ft)
65. HABJOE - 32116 m (105,367 ft)
66. GAGA-1 - 32086 m (105,269 ft)
67. Apex III Launch 2 - 32059 m (105180 ft)
68. Nova 1 - 32000 m (105000 ft)
69. hadie:3 - 31616 m (103727 ft)
70. Apex III Launch 1 - 31504 m (103360 ft)
71. Pegasus VI - 31394 m (102998 ft)
72. HoHoHo-1 - 31303 m (x ft)
73. Icarus II Launch 6 - 31228 m (102454 ft)
74. Apex II Launch 1 - 30958m (101568 ft)
75. Cloud 1 - 30114m (98799ft)
76. Buzz 7 - 29391m (96427 ft)
77. Cirrus - 29886 m (98050 ft)
78. Cloud3 - 28092 (92165 ft)
79. Apex II Launch 2 - 27692m (90853 ft)
80. MONDO-9 - 26270m (86188 ft)
81. UKHAS 1 - 24000 m (78740 ft)
82. MiHAB II - 24000 m (78740 ft)
83. Pegasus I - 20025 m (66585.3 ft)
84. Nova 4 - 20005 m (65633.2 ft) - cutdown as exceeded 45km range
85. Pegasus III - 19495 m (63959 ft)
86. MiHAB I - 3291.84 m (10800 ft)

1. B-66 - ???? km (track length 69,583 km)
2. B-63 - 8855 km (track length 47,430 km)
3. B-47 - 8498 km
4. B-45 - 6702 km
5. SEBA-6 - 5570 km (last known position)
6. B-22 - 3576 km
7. PAVA - 2906km
8. ANU-8 - 2512 km (still airborne and not yet descending)
9. Orion - 2135km
10. Apex Alpha - >1347km (Last known distance - balloon continued transmitting but no trackers)
11. AVA - 1256km (Austrian mountain got in the way)
12. PicoAtlas IX - 647km
13. Ozzie1 - 552.6km (Last known position)
14. hadie:4 - 544km

• B-64 – 3226 hours (134 days)
• B-66 – 1564 hours (65 days)
• UBSEDS15 – 1138 hours (47 days)
• B-63 – 793 hours
• SP3OSJ (5-14 July 2014) – 217 hours
• B-52 – 190 hours
• B-47 – 190 hours
• B-45 – 188 hours
• B-11 – 187 hours
• SP9UOB Pico 16 – 77.5 h (no solar)
• PicoAtlas IX – 33 hours
• AVA - 29 hours 30 mins till landing, transmitted until turned off by recovery team.
• PAVA - 26 hours. Battery died still in the air.
• Apex Alpha - 12hrs 20mins (Last known position - balloon continued transmitting but no trackers)
• Ozzie1 - 10hrs 59mins (Last known position)
• BallastHalo 2 - 10hrs 50mins

1. PYSY → OZ1SKY - 800.3 km (17/11/2012)
2. Apex Alpha → OZ1SKY - 775.6 km (22/10/2011)
3. Apex Alpha → 2E0UPU - 756.5km (22/10/2011)
4. STABILOTRON-II → PE2G - 751km (24/12/2016)
5. AVA → PE2G - 737km (14/04/2013)
6. Apex Alpha → CUSF - 716.8km (22/10/2011)
7. AVA → MI0VIM - 663km (27/02/13)
8. LAASE-1 → SP5MG - 610km (06/07/13)
9. HAM-1 → MI0VIM - 589km (18/08/12)
10. BELLO MONDO-11 → MI0VIM - 576km (08/09/12)
11. GAGA-1 → GM4JTJ - 530km (10/04/11)
12. HoHoHo-I → M0DTS - 463km (01/08/10)
13. XABEN-21 → ON5RZ - 432km (14/04/12)
14. BallastHalo 3 → M6DGE - 420km (20/2/10)

1. ORION → PE2G - 678.1km (30/11/2013)
2. Apex Alpha → 2E0UPU - 677.9km (22/10/2011)
3. Apex Alpha → CUSF - 659.0km (22/10/2011)
4. STS-3(2) → SP3OSJ 540km (18/05/2013)
5. hadie:3 → G3VZV - 530km (04/06/2011)
6. PINKY → PE2G - 505km (26/09/2015)

Since spacenear.us generates a large number of AJAX requests, we count visitors by unique IP. This includes bots (but that shouldn't matter too much on the scale of these records), and doesn't count the “two people from one family internet connection” case.

Due to log rotation and my laziness, visitors are measured 6am-6am but traffic is measured 12am-12am UTC. Inbound traffic is not counted in the last column since it would be inflated by the predictor running dataset downloads running on the same server

Notes:

• In between the BABBAGE flights, despite there being no launches on Sunday the 25^th, spacenear.us and ssdv.habhub.org had ~2500 visitors and 28.92 GB out on the wire

Worldwide Amateur Radio High Altitude Ballooning Flight Records