Story · Run · Ride

Edge of space

100 km

As far as space is above your head.

Run or ride 100 km. The height of the edge of space, laid flat.

It stands on
Leap to Australia run, Birkebeiner ride
The thin blue band of Earth's atmosphere seen edge-on from orbit, the crescent moon above.
Photo: NASA, International Space Station. Public domain.

What it takes · Running

Before you go.

Recommended first
Leap to Australia
Weekly distance
About 80 km of running a week on average over 6 weeks
Long weekends
About 7 hours of running over two days in a row, 4 times in the last 12 weeks
Longest run
At least 4½ hours, at least once in the last 12 weeks
Taper
Two easier weeks before the event week

What it takes · Cycling

Before you go.

Recommended first
Birkebeiner
Weekly distance
About 100 km of riding a week on average over 6 weeks
Long ride
75 km, at least once in the last 6 weeks. Finishing Birkebeiner counts
Taper
An easier week before the event week

The story

The world air-records body, the FAI, puts the edge of space at 100 km up. The United States counts from 50 miles, about 80 km. There is no single official line. Source: FAI.

The ladder

Running

  1. 5 km
  2. Forager's day
  3. First flight
  4. Mawson's last miles
  5. 10 km
  6. Gold march
  7. Hunter's day
  8. Nut grove
  9. Twelve-miler
  10. Wallace's Line
  11. Wildebeest's day
  12. Half Marathon
  13. Toutle avalanche
  14. Roland's pass
  15. Olympus Mons
  16. Dawes's ride
  17. Laki fissure
  18. Royal Road
  19. Legion's march
  20. Persistence hunt
  21. Norwegian thirty
  22. Chalk Gate
  23. Racing the horses
  24. Rim to rim
  25. Barclay's walk
  26. Long fall
  27. Nijmegen day
  28. South Georgia
  29. Marathon
  30. Fox's crossing
  31. Thirty-miler
  32. 50 km
  33. Mauna Loa 1859
  34. Kailash kora
  35. Chilkoot
  36. Leap to Australia
  37. Edge of space

Cycling

  1. Fox's crossing
  2. Thirty-miler
  3. Mauna Loa 1859
  4. Kailash kora
  5. Chilkoot
  6. Jouett's ride
  7. Iron Riders' day
  8. Birkebeiner
  9. Edge of space