diff --git a/README.md b/README.md
index 4d7ada1..dd94769 100644
--- a/README.md
+++ b/README.md
@@ -118,6 +118,7 @@ Specifies the kind of report to be generated. It defaults to text.
 ##### text
 ```
 Requests      [total]               1200
+Duration      [total]               1.998307684s
 Latencies     [mean, 95, 99, max]   223.340085ms, 326.913687ms, 416.537743ms, 7.788103259s
 Bytes In      [total, mean]         3714690, 3095.57
 Bytes Out     [total, mean]         0, 0.00
@@ -149,6 +150,7 @@ Get http://localhost:6060: http: can't write HTTP request on broken connection
     "total": 0,
     "mean": 0
   },
+  "duration": 1998307684,
   "requests": 1200,
   "success": 0.11666666666666667,
   "status_codes": {
diff --git a/lib/metrics.go b/lib/metrics.go
index 3df37e1..f0d0877 100644
--- a/lib/metrics.go
+++ b/lib/metrics.go
@@ -27,6 +27,7 @@ type Metrics struct {
 		Mean  float64 `json:"mean"`
 	} `json:"bytes_out"`
 
+	Duration    time.Duration  `json:"duration"`
 	Requests    uint64         `json:"requests"`
 	Success     float64        `json:"success"`
 	StatusCodes map[string]int `json:"status_codes"`
@@ -60,6 +61,7 @@ func NewMetrics(results []Result) *Metrics {
 		}
 	}
 
+	m.Duration = results[len(results)-1].Timestamp.Sub(results[0].Timestamp)
 	m.Latencies.Mean = time.Duration(float64(totalLatencies) / float64(m.Requests))
 	m.Latencies.P95 = time.Duration(quants.Query(0.95))
 	m.Latencies.P99 = time.Duration(quants.Query(0.99))
diff --git a/lib/metrics_test.go b/lib/metrics_test.go
index a66b1ae..32a1c17 100644
--- a/lib/metrics_test.go
+++ b/lib/metrics_test.go
@@ -7,9 +7,9 @@ import (
 
 func TestNewMetrics(t *testing.T) {
 	m := NewMetrics([]Result{
-		Result{500, time.Now(), 100 * time.Millisecond, 10, 30, "Internal server error"},
-		Result{200, time.Now(), 20 * time.Millisecond, 20, 20, ""},
-		Result{200, time.Now(), 30 * time.Millisecond, 30, 10, ""},
+		Result{500, time.Unix(0, 0), 100 * time.Millisecond, 10, 30, "Internal server error"},
+		Result{200, time.Unix(1, 0), 20 * time.Millisecond, 20, 20, ""},
+		Result{200, time.Unix(2, 0), 30 * time.Millisecond, 30, 10, ""},
 	})
 
 	for field, values := range map[string][]float64{
@@ -27,6 +27,7 @@ func TestNewMetrics(t *testing.T) {
 		"Latencies.Mean": []time.Duration{m.Latencies.Mean, 50 * time.Millisecond},
 		"Latencies.P95":  []time.Duration{m.Latencies.P95, 30 * time.Millisecond},
 		"Latencies.P99":  []time.Duration{m.Latencies.P99, 30 * time.Millisecond},
+		"Duration":       []time.Duration{m.Duration, 2 * time.Second},
 	} {
 		if values[0] != values[1] {
 			t.Errorf("%s: want: %s, got: %s", field, values[1], values[0])
diff --git a/lib/reporters.go b/lib/reporters.go
index 0fe829a..482ce61 100644
--- a/lib/reporters.go
+++ b/lib/reporters.go
@@ -19,6 +19,7 @@ func ReportText(results []Result) ([]byte, error) {
 
 	w := tabwriter.NewWriter(out, 0, 8, 2, '\t', tabwriter.StripEscape)
 	fmt.Fprintf(w, "Requests\t[total]\t%d\n", m.Requests)
+	fmt.Fprintf(w, "Duration\t[total]\t%s\n", m.Duration)
 	fmt.Fprintf(w, "Latencies\t[mean, 95, 99, max]\t%s, %s, %s, %s\n",
 		m.Latencies.Mean, m.Latencies.P95, m.Latencies.P99, m.Latencies.Max)
 	fmt.Fprintf(w, "Bytes In\t[total, mean]\t%d, %.2f\n", m.BytesIn.Total, m.BytesIn.Mean)