diff --git a/code/modules/unit_tests/unit_test.dm b/code/modules/unit_tests/unit_test.dm
index 9a318938143..1fdafe33017 100644
--- a/code/modules/unit_tests/unit_test.dm
+++ b/code/modules/unit_tests/unit_test.dm
@@ -18,6 +18,8 @@ GLOBAL_LIST_EMPTY(unit_test_mapping_logs)
 /// Global assoc list of required mapping items, [item typepath] to [required item datum].
 GLOBAL_LIST_EMPTY(required_map_items)
 
+GLOBAL_LIST_EMPTY(test_run_times)
+
 /// A list of every test that is currently focused.
 /// Use the PERFORM_ALL_TESTS macro instead.
 GLOBAL_VAR_INIT(focused_tests, focused_tests())
@@ -237,6 +239,8 @@ GLOBAL_VAR_INIT(focused_tests, focused_tests())
 			log_test(message)
 
 		test_output_desc += " [duration / 10]s"
+		if(duration > 10)
+			GLOB.test_run_times[test_path] = duration
 		if (test.succeeded)
 			log_world("[TEST_OUTPUT_GREEN("PASS")] [test_output_desc]")
 
@@ -394,6 +398,12 @@ GLOBAL_VAR_INIT(focused_tests, focused_tests())
 		RunUnitTest(unit_path, test_results)
 	SSticker.delay_end = FALSE
 
+	log_world("::group::Expensive Unit Test Times")
+	sortTim(GLOB.test_run_times, cmp = GLOBAL_PROC_REF(cmp_numeric_dsc), associative = TRUE)
+	for(var/type, duration in GLOB.test_run_times)
+		log_world("[type] took [duration/10]s")
+	log_world("::endgroup::")
+
 	var/file_name = "data/unit_tests.json"
 	fdel(file_name)
 	file(file_name) << json_encode(test_results)