diff --git a/CHANGELOG.md b/CHANGELOG.md
index 45dee384..e4f5bad2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,7 @@
 # Changelog
 All notable changes to this project will be documented in this file.
 
-## Unreleased
+## v1.16.0-dev - Unreleased
 
 ### Improvements
 - Paused ping handling can be controlled via API (#376)
@@ -9,7 +9,7 @@ All notable changes to this project will be documented in this file.
 - The /api/v1/checks/ endpoint now accepts either UUID or `unique_key` (#370)
 - Added /api/v1/checks/uuid/flips/ endpoint (#349)
 - In the cron expression dialog, show a human-friendly version of the expression
-
+- Indicate a started check with a progress spinner under status icon (#338)
 
 ### Bug Fixes
 - Removing Pager Team integration, project appears to be discontinued
diff --git a/hc/api/models.py b/hc/api/models.py
index 148d4d9e..5c1b6ca6 100644
--- a/hc/api/models.py
+++ b/hc/api/models.py
@@ -119,7 +119,7 @@ class Check(models.Model):
         if self.last_duration and self.last_duration < MAX_DELTA:
             return self.last_duration
 
-    def get_grace_start(self):
+    def get_grace_start(self, with_started=True):
         """ Return the datetime when the grace period starts.
 
         If the check is currently new, paused or down, return None.
@@ -142,7 +142,7 @@ class Check(models.Model):
             it = croniter(self.schedule, last_local)
             result = it.next(datetime)
 
-        if self.last_start and self.status != "down":
+        if with_started and self.last_start and self.status != "down":
             result = min(result, self.last_start)
 
         if result != NEVER:
@@ -175,7 +175,7 @@ class Check(models.Model):
         if self.status in ("new", "paused", "down"):
             return self.status
 
-        grace_start = self.get_grace_start()
+        grace_start = self.get_grace_start(with_started=with_started)
         grace_end = grace_start + self.grace
         if now >= grace_end:
             return "down"
diff --git a/hc/api/tests/test_check_model.py b/hc/api/tests/test_check_model.py
index 45bbef03..c1a35512 100644
--- a/hc/api/tests/test_check_model.py
+++ b/hc/api/tests/test_check_model.py
@@ -119,8 +119,8 @@ class CheckModelTestCase(BaseTestCase):
         check.last_start = timezone.now() - timedelta(minutes=5)
 
         self.assertEqual(check.get_status(with_started=True), "started")
-        # Starting a check starts the grace period:
-        self.assertEqual(check.get_status(), "grace")
+        # A started check still is considered "up":
+        self.assertEqual(check.get_status(), "up")
 
     def test_get_status_handles_up_then_started_and_expired(self):
         check = Check(status="up")
diff --git a/hc/front/templatetags/hc_extras.py b/hc/front/templatetags/hc_extras.py
index b87fe895..23c767b7 100644
--- a/hc/front/templatetags/hc_extras.py
+++ b/hc/front/templatetags/hc_extras.py
@@ -87,7 +87,7 @@ def last_ping_key(check):
 
 
 def not_down_key(check):
-    return check.get_status(with_started=True) != "down"
+    return check.get_status() != "down"
 
 
 @register.filter
@@ -126,7 +126,7 @@ def down_title(check):
     """
 
     s = "%s – %s" % (check.name_then_code(), settings.SITE_NAME)
-    if check.get_status(with_started=True) == "down":
+    if check.get_status() == "down":
         s = "DOWN – " + s
 
     return s
diff --git a/hc/front/views.py b/hc/front/views.py
index 313d3d86..d157856f 100644
--- a/hc/front/views.py
+++ b/hc/front/views.py
@@ -207,8 +207,9 @@ def status(request, code):
         details.append(
             {
                 "code": str(check.code),
-                "status": check.get_status(with_started=True),
+                "status": check.get_status(),
                 "last_ping": LAST_PING_TMPL.render(ctx),
+                "started": check.last_start is not None,
             }
         )
 
@@ -594,7 +595,7 @@ def copy(request, code):
 def status_single(request, code):
     check = _get_check_for_user(request, code)
 
-    status = check.get_status(with_started=True)
+    status = check.get_status()
     events = _get_events(check, 20)
     updated = "1"
     if len(events):
diff --git a/static/css/base.css b/static/css/base.css
index 7cb8f73e..60696e9e 100644
--- a/static/css/base.css
+++ b/static/css/base.css
@@ -168,3 +168,51 @@ pre {
     overflow: hidden;
     text-overflow: ellipsis;
 }
+
+.spinner {
+    display: none;
+    width: 24px;
+    height: 8px;
+    margin: 4px  auto 0 auto;
+
+}
+
+.spinner.started {
+    display: block;
+}
+
+
+.spinner > div {
+    float: left;
+    width: 4px;
+    height: 4px;
+    margin: 0 2px;
+
+    background: #AAA;
+    border-radius: 2px;
+    animation-duration: 1s;
+    animation-name: spinner-pulse;
+    animation-iteration-count: infinite;
+}
+
+.spinner .d2 {
+    animation-delay: 0.15s;
+}
+
+.spinner .d3 {
+    animation-delay: 0.3s;
+}
+
+@keyframes spinner-pulse {
+    from {
+        opacity: 0;
+    }
+
+    50% {
+        opacity: 1;
+    }
+
+    to {
+        opacity: 0;
+    }
+}
\ No newline at end of file
diff --git a/static/js/checks.js b/static/js/checks.js
index e6577bf6..d58eb330 100644
--- a/static/js/checks.js
+++ b/static/js/checks.js
@@ -199,6 +199,7 @@ $(function () {
     // Schedule refresh to run every 3s when tab is visible and user
     // is active, every 60s otherwise
     var lastStatus = {};
+    var lastStarted = {};
     var lastPing = {};
     var statusUrl = $("#checks-table").data("status-url");
     function refreshStatus() {
@@ -213,6 +214,11 @@ $(function () {
                         $("#" + el.code + " span.status").attr("class", "status icon-" + el.status);
                     }
 
+                    if (lastStarted[el.code] != el.started) {
+                        lastStarted[el.code] = el.started;
+                        $("#" + el.code + " .spinner").toggleClass("started", el.started);
+                    }
+
                     if (lastPing[el.code] != el.last_ping) {
                         lastPing[el.code] = el.last_ping;
                         $("#lpd-" + el.code).html(el.last_ping);
diff --git a/templates/front/details.html b/templates/front/details.html
index 3c802dd3..bc4d9c58 100644
--- a/templates/front/details.html
+++ b/templates/front/details.html
@@ -111,7 +111,7 @@
             <table>
                 <tr>
                     <td>
-                        <span id="log-status-icon" class="status icon-{{ check.get_status_with_started }}"></span>
+                        <span id="log-status-icon" class="status icon-{{ check.get_status }}"></span>
                     </td>
                     <td >
                         <p id="log-status-text">{% include "front/log_status_text.html" %}</p>
diff --git a/templates/front/log_status_text.html b/templates/front/log_status_text.html
index c6e4389e..27c612b4 100644
--- a/templates/front/log_status_text.html
+++ b/templates/front/log_status_text.html
@@ -1,5 +1,5 @@
 {% load humanize %}
-{% with check.get_status_with_started as status %}
+{% with check.get_status as status %}
     {% if status == "down" %}
         This check is down. Last ping was {{ check.last_ping|naturaltime }}.
     {% elif status == "up" %}
diff --git a/templates/front/my_checks_desktop.html b/templates/front/my_checks_desktop.html
index 3099c7e4..8dfee4b9 100644
--- a/templates/front/my_checks_desktop.html
+++ b/templates/front/my_checks_desktop.html
@@ -1,4 +1,4 @@
-{% load hc_extras %}
+{% load hc_extras static %}
 <table
     id="checks-table"
     class="table"
@@ -60,7 +60,12 @@
         {% if check in hidden_checks %}style="display: none"{% endif %}>
 
         <td class="indicator-cell">
-            <span class="status icon-{{ check.get_status_with_started }}" data-toggle="tooltip"></span>
+            <span class="status icon-{{ check.get_status }}" data-toggle="tooltip"></span>
+            <div class="spinner {% if check.last_start %}started{% endif %}">
+                <div class="d1"></div>
+                <div class="d2"></div>
+                <div class="d3"></div>
+            </div>
         </td>
         <td>
             <div data-name="{{ check.name }}"