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  1. Provide live tracking

Shadowtrack and mapping

The mapping feature calculates the relation of the device's coordinates to the shadowtrack.

PreviousDeep links on tracking appNextData APIs for live geodata

Last updated 1 month ago

Shadowtrack

The shadowtrack enables calculations for the (elevation chart, statistics), and for add-ons such as and .

Only one track can be set as the shadowtrack of the event. The shadowtrack represents the route on which participants move from the start to the finish. The length of the shadowtrack has to be the same length as the contest.

  • The length of the shadowtrack for a marathon is 42.195 km.

  • The shadowtrack for a triathlon includes swimming, cycling, and running in one continuous line.

  • If participants have to run three laps, then the shadowtrack has to consider three laps, too.

What is mapping?

Mapping processes the relation of the device's coordinates to the shadowtrack by calculating metrics like distance from start or distance to go. This impacts various features, including:

  • and ,

  • ,

  • ,

  • and

  • .

Note that mapping does not impact .

How does mapping work?

GPS devices send their coordinates to the tracking map and Racemap automatically calculates the most likely position on the shadowtrack.

The mapping can begin at any point on the shadowtrack. The first coordinate of the device must not necessarily be mapped to the start of the track. The first coordinate is mapped to the closest position on the track without a speed filter.

Mapping takes into account the device's latest coordinate and its previous position on the track.

Mapping considers laps and assumes that a device moves onwards (and not backward) on the track.

In the "advanced" settings of your tracking map, you can set the parameters to filter the device's coordinates for the mapping.

  • Max mapping distance (in meters): Maximum distance of devices coordinates from the shadowtrack. Coordinates with a greater distance from the shadowtrack are not considered for the mapping.

  • Max speed for speedfilter: Maximum speed to consider the devices coordinates for the mapping on the shadowtrack. Coordinates that would need a greater speed are not considered for the mapping.

  • Min speed for speedfilter: Minimum speed to consider the devices coordinates for the mapping on the shadowtrack. Coordinates that would need a lower speed are not considered for the mapping.

visualization of the race
predictive tracking
leaderboard
monitor
Visualization
elevation chart
Leaderboard
Monitor
Ranks API
Current API
predictive tracking