London to Moscow ICMP RTT page: average round-trip time, minimum/maximum latency, jitter and packet loss for the UK-Russia route in round 2026-08-16T04:07:28Z.

🇬🇧 London, UK (LON) → 🇷🇺 Moscow, Russia (MOW)

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

In the 2026-08-16T04:07:28Z round, ICMP echo probes from London, UK to Moscow, Russia averaged 43.5 ms over 50 samples, with a minimum of 41.81 ms, a maximum of 48.52 ms, jitter of 1.21 ms, and no packet loss.

With a geodesic distance of 2,508.5 km, the vacuum-floor time is 16.73 ms and the fiber-floor time is 24.56 ms; the observed RTT is 1.77 times the fiber floor, equivalent to 56.5% fiber-floor efficiency. For a route spanning roughly 2,500 km, this is a high-efficiency long-haul path and sits in the Excellent latency tier.

Relative to the 19 outbound routes from the same origin, this path ranks 6th in the round. Its 1.38 ms standard deviation is 3.2% of the average RTT, slightly tighter than the route set's 3.28% median standard deviation as a share of average RTT, so London-Moscow is both well-positioned for its distance and unusually consistent in this measurement round.

Latency Summary

Metric	Value
RTT	43.5 ms
Jitter	1.21 ms
Packet Loss	0%
Standard Fiber Floor	24.56 ms
Fiber Efficiency	56.5%
Latency Tier	Excellent
Source Region	Europe
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: LON → MOW

50 ICMP echo samples at 100 ms intervals · round 2026-08-16T04:07:28Z · avg 43.5 ± 0.20 ms (SE)

Sample distribution: box = interquartile range (42.5–44.0 ms), median 43.2 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 (24.6 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	42.59
2	100	43.66
3	200	42.41
4	300	42.07
5	400	42.68
6	500	42.51
7	600	45.92
8	700	43.25
9	800	43.41
10	900	44.05
11	1000	42.58
12	1100	42.09
13	1200	43.60
14	1300	42.42
15	1400	42.07
16	1500	45.46
17	1600	43.78
18	1700	43.85
19	1800	42.74
20	1900	46.59
21	2000	43.88
22	2100	43.73
23	2200	43.05
24	2300	43.29
25	2400	43.09
26	2500	42.82
27	2600	42.19
28	2700	42.10
29	2800	41.94
30	2900	41.81
31	3000	41.87
32	3100	42.81
33	3200	42.29
34	3300	44.94
35	3400	48.52
36	3500	46.66
37	3600	43.64
38	3700	42.47
39	3800	43.31
40	3900	44.71
41	4000	42.86
42	4100	44.73
43	4200	43.27
44	4300	44.28
45	4400	42.88
46	4500	44.32
47	4600	45.27
48	4700	44.47
49	4800	43.24
50	4900	42.83

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 London (51.50853, -0.12574) and Moscow (55.75204, 37.61781). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	2,508.5 km
Vacuum RTT floor	16.73 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	24.56 ms
Low-latency fiber material floor	24.47 ms
Engineering floor (5% path allowance)	25.8 ms
Research 1.33× mapped-fiber reference	32.67 ms
Estimated unamplified path loss	526.8 dB
Transparent optical spans / inline amplifiers	33 / 32
Published RTT inflation over fiber floor	1.77×

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 (2026-08-16T04:07:28Z) collected 50 ICMP echo samples on this route. Distribution statistics from that round:

Round Statistic	Value
Minimum RTT	41.81 ms
Average RTT	43.5 ms
Maximum RTT	48.52 ms
Standard deviation	1.38 ms
Stdev / average	3.2%

RTT trend

Estimated route stability across the selected time window.

Average: 43.5 ms
Minimum: 43.1 ms
Maximum: 44.0 ms
Average loss: 0.02%

Route Context

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

Reverse direction

Moscow to London latency and RTT — 42.4 ms

Fastest routes departing London (LON)

London to Amsterdam latency and RTT — 5.2 ms
London to Paris latency and RTT — 6.4 ms
London to Frankfurt latency and RTT — 13.6 ms
London to Berlin latency and RTT — 16.2 ms
London to Marseille latency and RTT — 17.9 ms

Fastest routes arriving at Moscow (MOW)

Berlin to Moscow latency and RTT — 28.6 ms
Frankfurt to Moscow latency and RTT — 34.7 ms
Amsterdam to Moscow latency and RTT — 38.1 ms
Paris to Moscow latency and RTT — 44.7 ms
Marseille to Moscow latency and RTT — 49.6 ms

Same corridor (Europe → Europe)

Amsterdam to London 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

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/lon-mow.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, London → Moscow round 2026-08-16T04:07:28Z, CC BY 4.0".

Data auto-generated on August 16, 2026. Explore the full interactive latency matrix or browse more city-pair routes.

London, UK → Moscow, Russia RTT