Explore Berlin, Germany to London, UK ICMP RTT, jitter, packet loss and fiber latency limits on the AS203314 network. View route data.

🇩🇪 Berlin, Germany (BER) → 🇬🇧 London, UK (LON)

Measurement round: 2026-08-16T04:07:28Z.

Berlin to London averaged 15.2 ms across 50 replies. The observed range was 14.57 to 16.96 ms; these figures describe one probe round, not a long-term service target.

This is number 3 of 19 outgoing routes by average RTT. That ranking compares different destinations and is not adjusted for distance.

Latency Summary

Metric	Value
RTT	15.2 ms
Jitter	0.4 ms
Packet Loss	0%
Standard Fiber Floor	9.15 ms
Fiber Efficiency	60.2%
Latency Tier	Ultra-Low
Source Region	Europe
Destination Region	Europe

Ping Measurement Series

50 ICMP echo probes were recorded in this round. Individual replies and their distribution are shown below.

Ping series: BER → LON

50 ICMP echo samples at 100 ms intervals · round 2026-08-16T04:07:28Z · avg 15.2 ± 0.07 ms (SE)

Sample distribution: box = interquartile range (14.8–15.4 ms), median 15.1 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 (9.2 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	15.01
2	100	15.84
3	200	15.06
4	300	14.83
5	400	14.70
6	500	14.67
7	600	14.63
8	700	14.85
9	800	15.04
10	900	14.96
11	1000	14.63
12	1100	14.80
13	1200	15.09
14	1300	15.04
15	1400	14.70
16	1500	15.43
17	1600	15.18
18	1700	14.71
19	1800	14.57
20	1900	15.91
21	2000	15.48
22	2100	15.14
23	2200	14.81
24	2300	15.12
25	2400	15.76
26	2500	15.06
27	2600	14.80
28	2700	14.73
29	2800	15.82
30	2900	14.93
31	3000	15.36
32	3100	16.27
33	3200	16.01
34	3300	16.96
35	3400	15.84
36	3500	15.83
37	3600	15.35
38	3700	15.17
39	3800	14.86
40	3900	15.56
41	4000	15.31
42	4100	14.80
43	4200	14.92
44	4300	14.79
45	4400	15.01
46	4500	15.13
47	4600	15.71
48	4700	15.26
49	4800	15.27
50	4900	15.29

Download This Route's Data

Download the probe round as CSV, JSON or YAML under CC BY 4.0. Citation details include the route and round timestamp.

CSV JSON YAML Full dataset

Theoretical Fiber Latency

The propagation model uses public city-centre coordinates from GeoNames: Berlin (52.52437, 13.41053) and London (51.50853, -0.12574). These are not facility coordinates or a surveyed cable path.

Physical Reference	Value
WGS-84 geodesic distance	934.7 km
Vacuum RTT floor	6.24 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	9.15 ms
Low-latency fiber material floor	9.12 ms
Engineering floor (5% path allowance)	9.61 ms
Research 1.33× mapped-fiber reference	12.17 ms
Estimated unamplified path loss	196.3 dB
Transparent optical spans / inline amplifiers	13 / 12
Published RTT inflation over fiber floor	1.66×

The span count assumes 80 km optical spans. Attenuation is a power-loss term, not a propagation delay. See the model assumptions and equations.

Stability & Trend

Statistics from the same 50 replies. They describe this probe round, not continuous historical monitoring.

Round Statistic	Value
Minimum RTT	14.57 ms
Average RTT	15.2 ms
Maximum RTT	16.96 ms
Standard deviation	0.49 ms
Stdev / average	3.2%

Estimated RTT trend

Modeled comparison, not historical probe measurements.

Average: 15.2 ms
Minimum: 15.1 ms
Maximum: 15.4 ms
Average loss: 0.01%

Route Context

Departure PoP: Berlin (BER)
Destination PoP: London (LON)
Region overview: Europe → Europe
Full global matrix: Backbone Latency Matrix
Physical methodology: Theoretical Fiber Latency

Reverse direction

London to Berlin latency and RTT: 16.2 ms

Fastest routes departing Berlin (BER)

Berlin to Frankfurt latency and RTT: 6.1 ms
Berlin to Amsterdam latency and RTT: 7.2 ms
Berlin to Paris latency and RTT: 15.6 ms
Berlin to Marseille latency and RTT: 20.2 ms
Berlin to Moscow latency and RTT: 28.6 ms

Fastest routes arriving at London (LON)

Amsterdam to London latency and RTT: 5.2 ms
Paris to London latency and RTT: 6.4 ms
Frankfurt to London latency and RTT: 12.9 ms
Marseille to London latency and RTT: 18.9 ms
Moscow to London latency and RTT: 42.4 ms

Same corridor (Europe → Europe)

London to Amsterdam latency and RTT: 5.2 ms
Amsterdam to Frankfurt latency and RTT: 5.9 ms
Frankfurt to Amsterdam latency and RTT: 5.9 ms

About This Measurement

These ICMP measurements cover the two backbone endpoints. Access networks, routing policy and load can change an end user's result. A probe round is not an SLA.

The underlying replies are available under CC BY 4.0 in the Hats Network latency dataset. Per-pair files are available at /opendata/latency/latest/pairs/ber-lon.pings.{csv,json,yaml}. Cite the route, round timestamp and dataset version. Example: "Hats Network latency dataset, Berlin → London round 2026-08-16T04:07:28Z, CC BY 4.0".

Round published August 16, 2026. See the full interactive latency matrix or browse more city-pair routes.

Berlin, Germany → London, UK RTT