diff --git a/routers/repo/cloudbrain.go b/routers/repo/cloudbrain.go
index 342ad6161..57f2c3b22 100755
--- a/routers/repo/cloudbrain.go
+++ b/routers/repo/cloudbrain.go
@@ -1010,6 +1010,13 @@ func CloudBrainBenchmarkIndex(ctx *context.Context) {
 	for i, task := range ciTasks {
 		ciTasks[i].CanDel = cloudbrain.CanDeleteJob(ctx, &task.Cloudbrain)
 		ciTasks[i].Cloudbrain.ComputeResource = task.ComputeResource
+		var duration int64
+		if task.Status == string(models.JobRunning) {
+			duration = time.Now().Unix() - int64(task.Cloudbrain.CreatedUnix)
+		} else {
+			duration = int64(task.Cloudbrain.UpdatedUnix) - int64(task.Cloudbrain.CreatedUnix)
+		}
+		ciTasks[i].TrainJobDuration = util.AddZero(duration/3600000) + ":" + util.AddZero(duration%3600000/60000) + ":" + util.AddZero(duration%60000/1000)
 	}
 
 	pager := context.NewPagination(int(count), setting.UI.IssuePagingNum, page, 5)