Kristoffer completes the task exactly as instructed

Here's a description of the contestant's attempt. Someone's probably working on collecting some images to illustrate it.

Kristoffer anchors the end of the tape measure under an ice bucket, and heads off down the driveway. Once he runs out of tape, he retrieves the tape measure and bucket, and repeats the process from where he ended. In total, he measures 155.5 metres, and Olli verifies that the exact distance was actually 154.7 metres, which is well within the 1% margin of error. He therefore wins the task and earns 5 points.

(Written by Karl Craven)