diff --git a/run_all.py b/run_all.py
index 8171ae8..3d86edd 100644
--- a/run_all.py
+++ b/run_all.py
@@ -9,6 +9,7 @@ from time import time
 for dir in [x for x in sorted(listdir('.')) if isdir(x)]:
     file = dir + '/' + dir + '.py'
     input = dir + '/input.txt'
+    total_run_time = 0
     if isfile(file) and isfile(input):
         print('--------------------------------')
         print(dir, ':', sep='')
@@ -19,4 +20,8 @@ for dir in [x for x in sorted(listdir('.')) if isdir(x)]:
         end_time = time()
         if p.returncode != 0:
             raise CalledProcessError(p.returncode, p.args)
-        print(f'Runtime: {end_time-start_time:.2f} s')
+        run_time = end_time-start_time
+        total_run_time += run_time
+        print(f'Runtime: {run_time:.2f} s')
+    print('--------------------------------')
+    print(f'Runtime: {total_run_time:.2f} s')