Explore Frankfurt, Germany to Marseille, France ICMP RTT, jitter, packet loss and fiber latency limits on the AS203314 network.

🇩🇪 Frankfurt, Germany (FRA) → 🇫🇷 Marseille, France (MRS)

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

Frankfurt to Marseille averaged 16.4 ms, compared with a 7.82 ms city-centre fiber reference. The difference cannot be assigned to a particular cable or carrier from RTT alone.

This is number 5 of 19 outgoing routes by average RTT. That ranking compares different destinations and is not adjusted for distance.

Latency Summary

Metric	Value
RTT	16.4 ms
Jitter	0.31 ms
Packet Loss	0%
Standard Fiber Floor	7.82 ms
Fiber Efficiency	47.7%
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: FRA → MRS

50 ICMP echo samples at 100 ms intervals · round 2026-08-16T04:07:28Z · avg 16.4 ± 0.05 ms (SE)

Sample distribution: box = interquartile range (16.1–16.5 ms), median 16.3 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 (7.8 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	16.72
2	100	16.94
3	200	17.74
4	300	16.53
5	400	16.48
6	500	16.11
7	600	16.18
8	700	16.34
9	800	16.11
10	900	15.96
11	1000	16.13
12	1100	16.11
13	1200	16.13
14	1300	16.88
15	1400	16.29
16	1500	16.74
17	1600	17.05
18	1700	16.66
19	1800	17.27
20	1900	16.69
21	2000	16.21
22	2100	16.22
23	2200	16.16
24	2300	16.58
25	2400	16.43
26	2500	16.30
27	2600	16.18
28	2700	16.46
29	2800	16.40
30	2900	16.35
31	3000	16.25
32	3100	16.06
33	3200	16.54
34	3300	16.14
35	3400	16.03
36	3500	16.16
37	3600	16.12
38	3700	16.23
39	3800	16.11
40	3900	15.96
41	4000	16.38
42	4100	16.13
43	4200	16.02
44	4300	16.01
45	4400	17.17
46	4500	16.51
47	4600	16.13
48	4700	16.91
49	4800	16.37
50	4900	16.42

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: Frankfurt am Main (50.11552, 8.68417) and Marseille (43.29695, 5.38107). These are not facility coordinates or a surveyed cable path.

Physical Reference	Value
WGS-84 geodesic distance	798.8 km
Vacuum RTT floor	5.33 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	7.82 ms
Low-latency fiber material floor	7.79 ms
Engineering floor (5% path allowance)	8.21 ms
Research 1.33× mapped-fiber reference	10.4 ms
Estimated unamplified path loss	167.7 dB
Transparent optical spans / inline amplifiers	11 / 10
Published RTT inflation over fiber floor	2.1×

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	15.96 ms
Average RTT	16.4 ms
Maximum RTT	17.74 ms
Standard deviation	0.37 ms
Stdev / average	2.3%

Estimated RTT trend

Modeled comparison, not historical probe measurements.

Average: 16.4 ms
Minimum: 16.2 ms
Maximum: 16.6 ms
Average loss: 0.02%

Route Context

Departure PoP: Frankfurt (FRA)
Destination PoP: Marseille (MRS)
Region overview: Europe → Europe
Full global matrix: Backbone Latency Matrix
Physical methodology: Theoretical Fiber Latency

Reverse direction

Marseille to Frankfurt latency and RTT: 16 ms

Fastest routes departing Frankfurt (FRA)

Frankfurt to Amsterdam latency and RTT: 5.9 ms
Frankfurt to Berlin latency and RTT: 6.1 ms
Frankfurt to Paris latency and RTT: 7.6 ms
Frankfurt to London latency and RTT: 12.9 ms
Frankfurt to Moscow latency and RTT: 34.7 ms

Fastest routes arriving at Marseille (MRS)

Paris to Marseille latency and RTT: 8.9 ms
London to Marseille latency and RTT: 17.9 ms
Amsterdam to Marseille latency and RTT: 19.6 ms
Berlin to Marseille latency and RTT: 20.2 ms
Moscow to Marseille latency and RTT: 49.9 ms

Same corridor (Europe → Europe)

Amsterdam to London latency and RTT: 5.2 ms
London to Amsterdam latency and RTT: 5.2 ms
Amsterdam to Frankfurt 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/fra-mrs.pings.{csv,json,yaml}. Cite the route, round timestamp and dataset version. Example: "Hats Network latency dataset, Frankfurt → Marseille 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.

Frankfurt, Germany → Marseille, France RTT