Sprinting Stops After Certain Distance/Time

This happens in both Survival and Creative.

1. Press F3 and look at your X or Z "c: ()" chunk/block coordinate.
2a. (Survival)Make sure hunger is high enough for sprinting.
2b. Sprint along one axis.
Notice after 10 chunks to the block that sprinting stops.

Tried with slow and speed potion with different results:
Slow: Seems to lower the amount of distance to around 9 chunks.
Speed: Seems to increase the amount of distance to around 13 chunks.

Possibly time related and not distance?