Seattle (USA) to Berlin (Germany) ICMP RTT measurement: average 138.5 ms, jitter 2.07 ms, standard deviation 3.11 ms, 0% loss, round 2026-08-15.

🇺🇸 Seattle, USA (SEA) → 🇩🇪 Berlin, Germany (BER)

Measurement round: 2026-08-15T04:03:13Z.

In the 2026-08-15T04:03:13Z round, ICMP echo RTT from Seattle to Berlin averaged 138.5 ms over 50 samples, with a minimum of 135.42 ms and a maximum of 148.44 ms. No packets were lost, and jitter was 2.07 ms.

The average sits 1.74 times the theoretical fiber-floor delay of 79.73 ms for the 8,142.2 km great-circle distance, giving a fiber efficiency of 57.6%. Given Berlin's position on the east-west European corridor, the extra time beyond the floor is in line with reaching a destination that sits deeper into the continent.

This route ranked 12th fastest among the 19 routes leaving Seattle in the same round, placing it in the slower half of that set. Its standard deviation of 3.11 ms is about 2.2% of the average RTT, below the 3.08% median variation for the route set, so the latency is steady despite the lower rank.

Latency Summary

Metric	Value
RTT	138.5 ms
Jitter	2.07 ms
Packet Loss	0%
Standard Fiber Floor	79.73 ms
Fiber Efficiency	57.6%
Latency Tier	Good
Source Region	North America
Destination Region	Europe

Ping Measurement Series

The chart below renders the 50-sample ICMP echo measurement round for this route; an accessible table of every sample is included with the chart.

Ping series: SEA → BER

50 ICMP echo samples at 100 ms intervals · round 2026-08-15T04:03:13Z · avg 138.5 ± 0.44 ms (SE)

Sample distribution: box = interquartile range (136.0–139.8 ms), median 137.7 ms · whiskers = min–max · diamond = round average · each dot is one measured sample.

How to read this chart

The shaded band spans the measured minimum to maximum RTT of all samples collected up to that point, and the thin line traces the running average. The final position therefore matches the round statistics exactly — the band only widens when a new extreme sample arrives.

The dashed line is the round average, and the shaded band at the bottom is the theoretical fiber-optic floor (79.7 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	146.94
2	100	139.95
3	200	139.53
4	300	138.80
5	400	146.38
6	500	142.50
7	600	140.57
8	700	148.44
9	800	139.82
10	900	138.35
11	1000	136.69
12	1100	135.58
13	1200	138.36
14	1300	138.01
15	1400	136.32
16	1500	136.29
17	1600	137.86
18	1700	139.00
19	1800	136.57
20	1900	135.48
21	2000	137.33
22	2100	135.75
23	2200	135.42
24	2300	135.70
25	2400	142.98
26	2500	140.17
27	2600	136.82
28	2700	135.60
29	2800	137.60
30	2900	135.94
31	3000	135.90
32	3100	135.55
33	3200	135.89
34	3300	135.44
35	3400	135.82
36	3500	135.67
37	3600	136.01
38	3700	136.43
39	3800	136.05
40	3900	139.79
41	4000	138.94
42	4100	136.81
43	4200	137.50
44	4300	137.98
45	4400	142.42
46	4500	139.76
47	4600	139.45
48	4700	143.38
49	4800	141.76
50	4900	139.70

Download This Route's Data

This route's measurement round is published as open data (CC BY 4.0) in CSV, JSON, and YAML. See About This Measurement for citation guidance.

Download this dataset

Per-route ICMP ping series, released under CC BY 4.0. Uncompressed plain text — no decompression step needed.

CSV JSON YAML Full dataset

Theoretical Fiber Latency

The public physical reference uses the GeoNames city centres for Seattle (47.60621, -122.33207) and Berlin (52.52437, 13.41053). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	8,142.2 km
Vacuum RTT floor	54.32 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	79.73 ms
Low-latency fiber material floor	79.41 ms
Engineering floor (5% path allowance)	83.73 ms
Research 1.33× mapped-fiber reference	106.05 ms
Estimated unamplified path loss	1709.9 dB
Transparent optical spans / inline amplifiers	107 / 106
Published RTT inflation over fiber floor	1.74×

Attenuation is used to estimate the number of 80 km optical spans; it does not directly slow light. See the full theoretical fiber latency, GeoNames, attenuation, and amplifier methodology.

Stability & Trend

The current measurement round (2026-08-15T04:03:13Z) collected 50 ICMP echo samples on this route. Distribution statistics from that round:

Round Statistic	Value
Minimum RTT	135.42 ms
Average RTT	138.5 ms
Maximum RTT	148.44 ms
Standard deviation	3.11 ms
Stdev / average	2.2%

RTT trend

Estimated route stability across the selected time window.

Average: 138.4 ms
Minimum: 137.0 ms
Maximum: 139.5 ms
Average loss: 0.03%

Route Context

Departure PoP: Seattle (SEA)
Destination PoP: Berlin (BER)
Region overview: North America → Europe
Full global matrix: Backbone Latency Matrix
Physical methodology: Theoretical Fiber Latency

Reverse direction

Berlin to Seattle latency and RTT — 137.7 ms

Fastest routes departing Seattle (SEA)

Seattle to Los Angeles latency and RTT — 26.6 ms
Seattle to New York latency and RTT — 59 ms
Seattle to Ashburn latency and RTT — 62 ms
Seattle to Miami latency and RTT — 81.1 ms
Seattle to Tokyo latency and RTT — 84.8 ms

Fastest routes arriving at Berlin (BER)

Frankfurt to Berlin latency and RTT — 6.1 ms
Amsterdam to Berlin latency and RTT — 7.2 ms
Paris to Berlin latency and RTT — 14.8 ms
London to Berlin latency and RTT — 16.2 ms
Marseille to Berlin latency and RTT — 21.5 ms

Same corridor (North America → Europe)

New York to London latency and RTT — 64.3 ms
New York to Paris latency and RTT — 68.4 ms
New York to Amsterdam latency and RTT — 68.5 ms

About This Measurement

Published RTT reflects best-case backbone path behavior measured with ICMP echo probes between PoPs. End-user latency also depends on local access networks, congestion, routing policy, and traffic engineering. None of these values is an SLA.

The measurement round behind this page is published as open data under CC BY 4.0 in the Hats Network latency dataset. Per-pair files are available at /opendata/latency/latest/pairs/sea-ber.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, Seattle → Berlin round 2026-08-15T04:03:13Z, CC BY 4.0".

Data auto-generated on August 15, 2026. Explore the full interactive latency matrix or browse more city-pair routes.

Seattle, USA → Berlin, Germany RTT