Moving at its fastest speed, generally the farthest a Red kangaroo (the largest of the kangaroo species) can jump is 12 metres (40 feet) with the average being 79 metres (2530 feet
http://wiki.answers.com/Q/How_far_can_a_kangaroo_j...

Kangaroos bounding gate allows them to cover 25 feet in a single leap and to jump 6 feet
http://www.chacha.com/question/howfarcankangaro...

Speed is distance over time, so distance is speed times time. 2 minutes is 2/60 of an hour which is 1/30 hour, so the distance is: 15 mi/h * (1/30 hours) = 15/30 = 1/2 mile.
http://answers.yahoo.com/question/index?qid=201001...

The maximum jumping distance of the Red Kangaroo ( in full flight) has been measured at 13.5 meters.
http://www.webanswers.com/pets/howfarcanakanga...
