diff --git a/Data-model.md b/Data-model.md
index 6a90fa8..27ee8ec 100644
--- a/Data-model.md
+++ b/Data-model.md
@@ -262,7 +262,14 @@ Markers data is stored as an unordered array of objects (so element id is _not_
 * `lock`: `boolean` - `true` if marker is locked (not affected by regeneration). Optional
 
 ## Routes
-Routes data is not in data model, but can be retrieved directly from svg `routes` element and `pack.cells.roads` array.
+Routes data is stored as an ordered array of objects (so element id is the array index). Object structure:
+* `i`: `number` - route id. Please note the element with id `0` is a fully valid route, not a placeholder
+* `points`: `number[]` - array of control points in format `[x, y, cellId]`
+* `feature`: `number` - feature id of the route. Auto-generated routes cannot be place on multiple features
+* `group`: `string` - route group. Default groups are: 'roads', 'trails', 'searoutes'
+* `length`: `number` - route length in km. Optional
+* `name`: `string` - route name. Optional
+* `lock`: `boolean` - `true` if route is locked (not affected by regeneration). Optional
 
 # Secondary global data
 Secondary data exposed to global space.