# Run

This is where the pathfinding algorithm is used. Users will be able to define the distance of the route they want to generate with the slider. We have limited the slider to a range of 1km to 20km, with increments of 0.5km. With the distance set, the user can hit the Generate Route button and have the app produce a route. If the user is unsatisfied with the route given, they can repeatedly generate another route until satisfied.

With a satisfied route, the user can begin their run by tapping on the Start Run button and the generated route (purple line) will still be kept on the next page. As the user runs, a blue line is drawn on the map to show the route the user has run so far. 

{% tabs %}
{% tab title="Route Generation" %}
           ![](/files/-MenGCunfwcAKGpJbwEf)![](/files/-MenGCumyMVaL2e8gaCs)

                                         *2 different routes of 2km at the same starting point*
{% endtab %}

{% tab title="Tracking" %}
![](/files/-MenGCuoyntsh1YGq9w0)
{% endtab %}
{% endtabs %}

For the implementation of the algorithm, see [here](/run-mania/software-development-process.md#auto-routing).\
For the implementation of the tracking, see [here](/run-mania/software-development-process.md#tracking-the-run).\
Do take note of the limitations ([Route generation](/run-mania/limitations.md#google-directions-api) and [Background tracking](/run-mania/limitations.md#background-location-tracking-for-ios-devices)) regarding this feature. 


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