diff --git a/src/c3nav/mapdata/models/locations.py b/src/c3nav/mapdata/models/locations.py
index e98d2a8b..c2de7d65 100644
--- a/src/c3nav/mapdata/models/locations.py
+++ b/src/c3nav/mapdata/models/locations.py
@@ -470,6 +470,22 @@ class CustomLocationProxyMixin:
     def get_custom_location(self):
         raise NotImplementedError
 
+    @property
+    def available(self):
+        return self.get_custom_location() is not None
+
+    @property
+    def x(self):
+        return self.get_custom_location().x
+
+    @property
+    def y(self):
+        return self.get_custom_location().y
+
+    @property
+    def level(self):
+        return self.get_custom_location().level
+
     def serialize_position(self):
         raise NotImplementedError
 
@@ -550,6 +566,9 @@ class Position(CustomLocationProxyMixin, models.Model):
     coordinates_id = models.CharField(_('coordinates'), null=True, max_length=48)
     api_secret = models.CharField(_('api secret'), max_length=64, default=get_position_api_secret)
 
+    can_search = True
+    can_describe = False
+
     coordinates = LocationById()
 
     class Meta:
@@ -583,8 +602,8 @@ class Position(CustomLocationProxyMixin, models.Model):
         custom_location = self.get_custom_location()
         if custom_location is None:
             return {
-                'id': self.secret,
-                'slug': self.secret,
+                'id': 'p:%s' % self.secret,
+                'slug': 'p:%s' % self.secret,
                 'available': False,
                 'icon': 'my_location',
                 'title': self.name,
@@ -606,6 +625,18 @@ class Position(CustomLocationProxyMixin, models.Model):
         })
         return result
 
+    @property
+    def slug(self):
+        return 'p:%s' % self.secret
+
+    def serialize(self, *args, **kwargs):
+        return self.serialize_position()
+
+    def get_geometry(self, *args, **kwargs):
+        return None
+
+    level_id = None
+
     def save(self, *args, **kwargs):
         with transaction.atomic():
             super().save(*args, **kwargs)
diff --git a/src/c3nav/mapdata/utils/locations.py b/src/c3nav/mapdata/utils/locations.py
index e40574eb..2ceb2fbd 100644
--- a/src/c3nav/mapdata/utils/locations.py
+++ b/src/c3nav/mapdata/utils/locations.py
@@ -4,7 +4,7 @@ import re
 from collections import OrderedDict
 from functools import reduce
 from itertools import chain
-from typing import List, Mapping, Optional
+from typing import List, Mapping, Optional, Union
 
 from django.apps import apps
 from django.db.models import Prefetch, Q
@@ -18,7 +18,7 @@ from c3nav.mapdata.models.access import AccessPermission
 from c3nav.mapdata.models.geometry.base import GeometryMixin
 from c3nav.mapdata.models.geometry.level import LevelGeometryMixin, Space
 from c3nav.mapdata.models.geometry.space import SpaceGeometryMixin
-from c3nav.mapdata.models.locations import LocationRedirect, LocationSlug, SpecificLocation
+from c3nav.mapdata.models.locations import LocationRedirect, LocationSlug, Position, SpecificLocation
 from c3nav.mapdata.utils.cache.local import LocalCacheProxy
 from c3nav.mapdata.utils.models import get_submodels
 
@@ -206,12 +206,18 @@ def get_location_by_id_for_request(pk, request):
     if isinstance(pk, str):
         if pk.isdigit():
             pk = int(pk)
+        elif pk.startswith('p:'):
+            try:
+                # return immediately, don't cache for obvious reasons
+                return Position.objects.get(secret=pk[2:])
+            except Position.DoesNotExist:
+                return None
         else:
             return get_custom_location_for_request(pk, request)
     return locations_for_request(request).get(pk)
 
 
-def get_location_by_slug_for_request(slug: str, request) -> Optional[LocationSlug]:
+def get_location_by_slug_for_request(slug: str, request) -> Optional[Union[LocationSlug, Position]]:
     cache_key = 'mapdata:location:by_slug:%s:%s' % (AccessPermission.cache_key_for_request(request), slug)
     location = proxied_cache.get(cache_key, None)
     if location is not None:
@@ -221,6 +227,12 @@ def get_location_by_slug_for_request(slug: str, request) -> Optional[LocationSlu
         location = get_custom_location_for_request(slug, request)
         if location is None:
             return None
+    elif slug.startswith('p:'):
+        try:
+            # return immediately, don't cache for obvious reasons
+            return Position.objects.get(secret=slug[2:])
+        except Position.DoesNotExist:
+            return None
     elif ':' in slug:
         code, pk = slug.split(':', 1)
         model_name = LocationSlug.LOCATION_TYPE_BY_CODE.get(code)
diff --git a/src/c3nav/routing/api.py b/src/c3nav/routing/api.py
index 3e82cb24..e8b793fd 100644
--- a/src/c3nav/routing/api.py
+++ b/src/c3nav/routing/api.py
@@ -7,6 +7,7 @@ from rest_framework.viewsets import ViewSet
 
 from c3nav.mapdata.api import api_stats_clean_location_value
 from c3nav.mapdata.models.access import AccessPermission
+from c3nav.mapdata.models.locations import Position
 from c3nav.mapdata.utils.cache.stats import increment_cache_key
 from c3nav.mapdata.utils.locations import visible_locations_for_request
 from c3nav.routing.exceptions import LocationUnreachable, NoRouteFound, NotYetRoutable
@@ -71,8 +72,8 @@ class RoutingViewSet(ViewSet):
 
         return Response({
             'request': {
-                'origin': form.cleaned_data['origin'].pk,
-                'destination': form.cleaned_data['destination'].pk,
+                'origin': self.get_request_pk(form.cleaned_data['origin']),
+                'destination': self.get_request_pk(form.cleaned_data['destination']),
             },
             'options': options.serialize(),
             'report_issue_url': reverse('site.report_create', kwargs={
@@ -83,6 +84,9 @@ class RoutingViewSet(ViewSet):
             'result': route.serialize(locations=visible_locations_for_request(request)),
         })
 
+    def get_request_pk(self, location):
+        return location.slug if isinstance(location, Position) else location.pk
+
     @action(detail=False, methods=['get', 'post'])
     def options(self, request, *args, **kwargs):
         options = RouteOptions.get_for_request(request)
diff --git a/src/c3nav/routing/route.py b/src/c3nav/routing/route.py
index 19e32a90..60a5ecfe 100644
--- a/src/c3nav/routing/route.py
+++ b/src/c3nav/routing/route.py
@@ -12,7 +12,10 @@ def describe_location(location, locations):
         final_location = locations.get(location.pk)
         if final_location is not None:
             location = final_location
-    return location.serialize(include_type=True, detailed=False, simple_geometry=True)
+    result = location.serialize(include_type=True, detailed=False, simple_geometry=True)
+    if hasattr(location, 'serialize_position'):
+        result.update(location.serialize_position())
+    return result
 
 
 class Route:
@@ -170,7 +173,6 @@ class Route:
 
         options_summary = ', '.join(str(s) for s in options_summary)
 
-
         return OrderedDict((
             ('origin', describe_location(self.origin, locations)),
             ('destination', describe_location(self.destination, locations)),
diff --git a/src/c3nav/routing/router.py b/src/c3nav/routing/router.py
index 007c465a..d7730341 100644
--- a/src/c3nav/routing/router.py
+++ b/src/c3nav/routing/router.py
@@ -328,8 +328,8 @@ class Router:
                  if poi.space_id not in restrictions.spaces and poi.access_restriction_id not in restrictions),
             ))
         elif isinstance(location, (CustomLocation, CustomLocationProxyMixin)):
-            if isinstance(location, CustomLocationProxyMixin):
-                location = location.get_custom_location()
+            if isinstance(location, CustomLocationProxyMixin) and not location.available:
+                raise LocationUnreachable
             point = Point(location.x, location.y)
             location = RouterPoint(location)
             space = self.space_for_point(location.level.pk, point, restrictions)
diff --git a/src/c3nav/site/static/site/js/c3nav.js b/src/c3nav/site/static/site/js/c3nav.js
index b191f77e..a4046b3f 100644
--- a/src/c3nav/site/static/site/js/c3nav.js
+++ b/src/c3nav/site/static/site/js/c3nav.js
@@ -1547,6 +1547,7 @@ c3nav = {
             $.getJSON('/api/locations/' + location.id + '/geometry/', c3nav._location_geometry_loaded);
         }
 
+        if (!location.point) return;
         var point = c3nav._location_point_overrides[location.id] || location.point.slice(1),
             latlng = L.GeoJSON.coordsToLatLng(point),
             buttons = $('#location-popup-buttons').clone();
diff --git a/src/c3nav/site/urls.py b/src/c3nav/site/urls.py
index 8f8fc918..851c389e 100644
--- a/src/c3nav/site/urls.py
+++ b/src/c3nav/site/urls.py
@@ -4,9 +4,9 @@ from c3nav.site.views import (about_view, access_redeem_view, account_view, chan
                               login_view, logout_view, map_index, position_create, position_detail, position_list,
                               position_set, qr_code, register_view, report_create, report_detail, report_list)
 
-slug = r'(?P<slug>[a-z0-9-_.:]+)'
+slug = r'(?P<slug>[a-zA-Z0-9-_.:]+)'
 coordinates = r'(?P<coordinates>[a-z0-9-_:]+:-?\d+(\.\d+)?:-?\d+(\.\d+)?)'
-slug2 = r'(?P<slug2>[a-z0-9-_.:]+)'
+slug2 = r'(?P<slug2>[a-zA-Z0-9-_.:]+)'
 details = r'(?P<details>details/)?'
 nearby = r'(?P<nearby>nearby/)?'
 options = r'(?P<options>options/)?'