Here are different pace charts for different traditional ultra distances to give you an idea what needs to be your average speed for 12 hours to run your desired goal distance.

Laps

Miles

KM

Speed

in minutes

per mile

Note

1

1.01203

1.63

26

26.31

42.34

27:22

Marathon

31

31.37

50.48

22:57

Shortest traditional Ultramarathon distance

50

50.60

81.43

14:14

50M

52

52.62

84.69

13:41

Double Marathon

62

62.75

100.97

11:28

100K

78

78.93

127.03

9:07

Triple Marathon*

93

94.11

151.46

7:39

150K*

104

105.25

169.38

6:50

Quadruple Marathon**

* Free entry at the next Mind The Ducks with thriple marathon or better

** Lifetime free entry with quadruple marathon or better

*** Pace adjusted to include additional distance needed to complete full lap