diff --git a/HISTORY.rst b/HISTORY.rst
index a040ff52..912f3872 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -31,6 +31,9 @@ PlatformIO 2.0
   `platformio lib search <http://docs.platformio.org/en/latest/userguide/lib/cmd_search.html>`__
   command
   (`issue #604 <https://github.com/platformio/platformio/issues/604>`_)
+* Allowed to specify default environments `env_default <http://docs.platformio.org/en/latest/projectconf.html#env-default>`__
+  which should be processed by default with ``platformio run`` command
+  (`issue #576 <https://github.com/platformio/platformio/issues/576>`_)
 * Allowed to unflag(remove) base/initial flags using
   `build_unflags <http://docs.platformio.org/en/latest/projectconf.html#build-unflags>`__
   option
diff --git a/docs/projectconf.rst b/docs/projectconf.rst
index 91f2ba23..0af9c5f5 100644
--- a/docs/projectconf.rst
+++ b/docs/projectconf.rst
@@ -130,6 +130,45 @@ project.
 This option can be overridden by global environment variable
 :envvar:`PLATFORMIO_DATA_DIR`.
 
+.. _projectconf_pio_env_default:
+
+``env_default``
+^^^^^^^^^^^^^^^
+
+:ref:`cmd_run` command processes all environments ``[env:***]`` by default
+if :option:`platformio run --environment` option is not specified.
+:ref:`projectconf_pio_env_default` allows to define environments which
+should be processed by default.
+
+Multiple environments are allowed if they are separated with ``,`` (comma).
+For example.
+
+.. code-block:: ini
+
+    [platformio]
+    env_default = uno, nodemcu
+
+    [env:uno]
+    platform = atmelavr
+    framework = arduino
+    board = uno
+
+    [env:nodemcu]
+    platform = espressif
+    framework = arduino
+    board = nodemcu
+
+    [env:teensy31]
+    platform = teensy
+    framework = arduino
+    board = teensy31
+
+    [env:lpmsp430g2553]
+    platform = timsp430
+    framework = energia
+    board = lpmsp430g2553
+    build_flags = -D LED_BUILTIN=RED_LED
+
 ----------
 
 Section ``[env:NAME]``
diff --git a/docs/userguide/cmd_run.rst b/docs/userguide/cmd_run.rst
index dcd2cbdc..6034cb04 100644
--- a/docs/userguide/cmd_run.rst
+++ b/docs/userguide/cmd_run.rst
@@ -38,7 +38,10 @@ Options
 .. option::
     -e, --environment
 
-Process specified environments
+Process specified environments.
+
+You can also specify which environments should be processed by default using
+:ref:`projectconf_pio_env_default`.
 
 
 .. option::
diff --git a/platformio/commands/run.py b/platformio/commands/run.py
index 30a0f1c4..c0739dc5 100644
--- a/platformio/commands/run.py
+++ b/platformio/commands/run.py
@@ -64,6 +64,12 @@ def cli(ctx, environment, target, upload_port,  # pylint: disable=R0913,R0914
                     fg="yellow"
                 )
 
+        env_default = None
+        if config.has_option("platformio", "env_default"):
+            env_default = [
+                e.strip()
+                for e in config.get("platformio", "env_default").split(",")]
+
         results = []
         for section in config.sections():
             # skip main configuration section
@@ -74,7 +80,8 @@ def cli(ctx, environment, target, upload_port,  # pylint: disable=R0913,R0914
                 raise exception.InvalidEnvName(section)
 
             envname = section[4:]
-            if environment and envname not in environment:
+            if ((environment and envname not in environment) or
+                    (env_default and envname not in env_default)):
                 # echo("Skipped %s environment" % style(envname, fg="yellow"))
                 continue