diff --git a/pygeoapi/django_/urls.py b/pygeoapi/django_/urls.py
index 68abe28..8fed37b 100644
--- a/pygeoapi/django_/urls.py
+++ b/pygeoapi/django_/urls.py
@@ -143,6 +143,11 @@ urlpatterns = [
         views.get_collection_edr_query,
         name='collection-edr-cube',
     ),
+    path(
+        'collections/<str:collection_id>/radius',
+        views.get_collection_edr_query,
+        name='collection-edr-radius',
+    ),
     path(
         'collections/<str:collection_id>/trajectory',
         views.get_collection_edr_query,
@@ -168,6 +173,11 @@ urlpatterns = [
         views.get_collection_edr_query,
         name='collection-edr-instance-cube',
     ),
+    path(
+        'collections/<str:collection_id>/instances/<str:instance_id>/radius',
+        views.get_collection_edr_query,
+        name='collection-edr-instance-radius',
+    ),
     path(
         'collections/<str:collection_id>/instances/<str:instance_id>/trajectory',  # noqa
         views.get_collection_edr_query,
diff --git a/pygeoapi/flask_app.py b/pygeoapi/flask_app.py
index e1edecd..1f7ec54 100644
--- a/pygeoapi/flask_app.py
+++ b/pygeoapi/flask_app.py
@@ -405,11 +405,13 @@ def get_job_result_resource(job_id, resource):
 @BLUEPRINT.route('/collections/<path:collection_id>/position')
 @BLUEPRINT.route('/collections/<path:collection_id>/area')
 @BLUEPRINT.route('/collections/<path:collection_id>/cube')
+@BLUEPRINT.route('/collections/<path:collection_id>/radius')
 @BLUEPRINT.route('/collections/<path:collection_id>/trajectory')
 @BLUEPRINT.route('/collections/<path:collection_id>/corridor')
 @BLUEPRINT.route('/collections/<path:collection_id>/instances/<instance_id>/position')  # noqa
 @BLUEPRINT.route('/collections/<path:collection_id>/instances/<instance_id>/area')  # noqa
 @BLUEPRINT.route('/collections/<path:collection_id>/instances/<instance_id>/cube')  # noqa
+@BLUEPRINT.route('/collections/<path:collection_id>/instances/<instance_id>/radius')  # noqa
 @BLUEPRINT.route('/collections/<path:collection_id>/instances/<instance_id>/trajectory')  # noqa
 @BLUEPRINT.route('/collections/<path:collection_id>/instances/<instance_id>/corridor')  # noqa
 def get_collection_edr_query(collection_id, instance_id=None):
diff --git a/pygeoapi/starlette_app.py b/pygeoapi/starlette_app.py
index e93f1fe..de748d1 100644
--- a/pygeoapi/starlette_app.py
+++ b/pygeoapi/starlette_app.py
@@ -472,11 +472,13 @@ async def get_job_result_resource(request: Request,
 @app.route('/collections/{collection_id:path}/position')
 @app.route('/collections/{collection_id:path}/area')
 @app.route('/collections/{collection_id:path}/cube')
+@app.route('/collections/{collection_id:path}/radius')
 @app.route('/collections/{collection_id:path}/trajectory')
 @app.route('/collections/{collection_id:path}/corridor')
 @app.route('/collections/{collection_id:path}/instances/{instance_id}/position')  # noqa
 @app.route('/collections/{collection_id:path}/instances/{instance_id}/area')
 @app.route('/collections/{collection_id:path}/instances/{instance_id}/cube')
+@app.route('/collections/{collection_id:path}/instances/{instance_id}/radius')
 @app.route('/collections/{collection_id:path}/instances/{instance_id}/trajectory')  # noqa
 @app.route('/collections/{collection_id:path}/instances/{instance_id}/corridor')  # noqa
 async def get_collection_edr_query(request: Request, collection_id=None, instance_id=None):  # noqa