Marathons and sprints are scored correctly and without errors. Please read the detailed description about the marathon or sprint. To see the detailed description, open the desired marathon or sprint. Under the brief description there will be a button, “Show more details.” Tap this and read the details.
IMPORTANT: Some tasks in marathons and sprints have a completion limit. This means that the task can be completed more than once up to a certain level, after which no points will be awarded for that task in that marathon or sprint. If a task specifies 0/1000, this means that a maximum of 1,000 points can be earned for that task in the current marathon or sprint. When 1000/1000 is reached, points will no longer be awarded for that task.