diff --git a/CHANGELOG.md b/CHANGELOG.md
index 06cec57c..d4f5c1ee 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,7 +9,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
-- The restart command now accepts the `--gap/--no-gap` options.
+- The restart command now accepts the `--gap/--no-gap` options. (#437)
+- The default log length can now be controlled via the configuration option
+  `log_length`. (#436)
 
 ## [2.0.1] - 2021-05-10
 
diff --git a/docs/user-guide/configuration.md b/docs/user-guide/configuration.md
index be163b8f..a6aac5d3 100644
--- a/docs/user-guide/configuration.md
+++ b/docs/user-guide/configuration.md
@@ -116,6 +116,10 @@ If `true`, the output of the `log` command will include the currently running
 frame (if any) by default. The option can be overridden on the command line
 with the `-c/-C` resp. `--current/--no-current` flags.
 
+#### `options.log_length` (default: `7`)
+
+The number of previous days to show when running `watson log`.
+
 #### `options.pager` (default: `true`)
 
 If `true`, the output of the `log` and `report` command will be
@@ -238,6 +242,7 @@ log_current = false
 pager = true
 report_current = false
 reverse_log = true
+log_length = 3
 ```
 
 ## Application folder
diff --git a/tests/test_cli.py b/tests/test_cli.py
index 2a1b3a52..c3cdffb2 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -150,6 +150,37 @@ def test_log_invalid_date(runner, watson, test_dt):
     assert result.exit_code != 0
 
 
+def test_log_length_config(runner, watson, mocker):
+    # Add three days worth of data
+    start_dt = arrow.now()
+    end_dt = start_dt + timedelta(hours=1)
+    runner.invoke(
+        cli.add,
+        ['-f', start_dt, '-t', end_dt, 'project-name'],
+        obj=watson)
+    runner.invoke(
+        cli.add,
+        ['-f', start_dt - timedelta(days=1),
+         '-t', end_dt - timedelta(days=1),
+         'project-name'],
+        obj=watson)
+    runner.invoke(
+        cli.add,
+        ['-f', start_dt - timedelta(days=2),
+         '-t', end_dt - timedelta(days=2),
+         'project-name'],
+        obj=watson)
+
+    # Use newlines to test how many days are displayed in the log output
+    watson.config.set('options', 'log_length', 1)
+    result = runner.invoke(cli.log, obj=watson)
+    assert result.output.count('\n') == 5
+
+    watson.config.set('options', 'log_length', 2)
+    result = runner.invoke(cli.log, obj=watson)
+    assert result.output.count('\n') == 8
+
+
 # watson report
 
 @pytest.mark.parametrize('test_dt,expected', VALID_DATES_DATA)
diff --git a/watson/cli.py b/watson/cli.py
index 22bd369b..90d2aaf2 100644
--- a/watson/cli.py
+++ b/watson/cli.py
@@ -914,7 +914,7 @@ def aggregate(ctx, watson, current, from_, to, projects, tags, output_format,
 @click.option('-r/-R', '--reverse/--no-reverse', 'reverse', default=None,
               help="(Don't) reverse the order of the days in output.")
 @click.option('-f', '--from', 'from_', type=DateTime,
-              default=arrow.now().shift(days=-7),
+              default=None,
               help="The date from when the log should start. Defaults "
               "to seven days ago.")
 @click.option('-t', '--to', type=DateTime, default=arrow.now(),
@@ -1041,6 +1041,9 @@ def log(watson, current, reverse, from_, to, projects, tags, ignore_projects,
     02cb269,2014-04-16 09:53,2014-04-16 12:43,apollo11,wheels
     1070ddb,2014-04-16 13:48,2014-04-16 16:17,voyager1,"antenna, sensors"
     """  # noqa
+    if from_ is None:
+        log_length = watson.config.getint('options', 'log_length', 7)
+        from_ = arrow.now().shift(days=-log_length)
     for start_time in (_ for _ in [day, week, month, luna, year, all]
                        if _ is not None):
         from_ = start_time