ICMP RTT data for the Johannesburg, South Africa, to New York, USA, route: average latency, jitter, loss, and efficiency for the 2026-08-16 round.

🇿🇦 Johannesburg, South Africa (JNB) → 🇺🇸 New York, USA (NYC)

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

Round 2026-08-16T04:07:28Z captured ICMP echo RTT from Johannesburg, South Africa, to New York, USA, with 50 samples. Average RTT was 221.8 ms; the minimum was 213.14 ms and the maximum 261.72 ms, with zero packet loss, and the route was classified in the fair latency tier.

The geodesic distance is 12,832.9 km, giving a fiber floor of 125.67 ms. The measured average is about 1.76 times that floor, corresponding to a fiber efficiency of 56.7%, and the standard deviation and jitter are 8.43 ms and 6.44 ms, respectively.

This was one of 19 outbound routes from Johannesburg in the round, ranked 8th by average RTT. Variability at about 3.8% of the average is above the network-wide median of 3.28%, and the 48.58 ms gap between minimum and maximum suggests peak RTT values deserve attention on this route.

Latency Summary

Metric	Value
RTT	221.8 ms
Jitter	6.44 ms
Packet Loss	0%
Standard Fiber Floor	125.67 ms
Fiber Efficiency	56.7%
Latency Tier	Fair
Source Region	Africa
Destination Region	North America

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: JNB → NYC

50 ICMP echo samples at 100 ms intervals · round 2026-08-16T04:07:28Z · avg 221.8 ± 1.19 ms (SE)

Sample distribution: box = interquartile range (215.5–225.1 ms), median 219.3 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 (125.7 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	231.27
2	100	230.54
3	200	219.42
4	300	214.85
5	400	213.57
6	500	217.77
7	600	213.93
8	700	226.21
9	800	218.90
10	900	213.27
11	1000	215.16
12	1100	213.96
13	1200	213.42
14	1300	213.14
15	1400	226.52
16	1500	217.28
17	1600	216.87
18	1700	223.12
19	1800	217.97
20	1900	217.93
21	2000	217.96
22	2100	214.24
23	2200	218.23
24	2300	215.11
25	2400	219.53
26	2500	221.53
27	2600	224.39
28	2700	221.37
29	2800	215.51
30	2900	229.51
31	3000	230.04
32	3100	225.17
33	3200	261.72
34	3300	231.70
35	3400	226.63
36	3500	224.47
37	3600	233.95
38	3700	219.04
39	3800	221.24
40	3900	214.22
41	4000	224.74
42	4100	225.93
43	4200	224.19
44	4300	240.15
45	4400	221.83
46	4500	224.56
47	4600	215.50
48	4700	219.15
49	4800	215.05
50	4900	218.24

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 Johannesburg (-26.20227, 28.04363) and New York City (40.71427, -74.00597). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	12,832.9 km
Vacuum RTT floor	85.61 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	125.67 ms
Low-latency fiber material floor	125.16 ms
Engineering floor (5% path allowance)	131.97 ms
Research 1.33× mapped-fiber reference	167.14 ms
Estimated unamplified path loss	2694.9 dB
Transparent optical spans / inline amplifiers	169 / 168
Published RTT inflation over fiber floor	1.76×

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	213.14 ms
Average RTT	221.8 ms
Maximum RTT	261.72 ms
Standard deviation	8.43 ms
Stdev / average	3.8%

RTT trend

Estimated route stability across the selected time window.

Average: 221.8 ms
Minimum: 219.8 ms
Maximum: 224.0 ms
Average loss: 0.02%

Route Context

Departure PoP: Johannesburg (JNB)
Destination PoP: New York (NYC)
Region overview: Africa → North America
Full global matrix: Backbone Latency Matrix
Physical methodology: Theoretical Fiber Latency

Reverse direction

New York to Johannesburg latency and RTT — 221.5 ms

Fastest routes departing Johannesburg (JNB)

Johannesburg to London latency and RTT — 158 ms
Johannesburg to Amsterdam latency and RTT — 163.2 ms
Johannesburg to Paris latency and RTT — 164.4 ms
Johannesburg to Frankfurt latency and RTT — 166 ms
Johannesburg to Marseille latency and RTT — 172 ms

Fastest routes arriving at New York (NYC)

Ashburn to New York latency and RTT — 6 ms
Miami to New York latency and RTT — 33.3 ms
Los Angeles to New York latency and RTT — 57.9 ms
Seattle to New York latency and RTT — 59.5 ms
London to New York latency and RTT — 63.8 ms

Same corridor (Africa → North America)

Johannesburg to Ashburn latency and RTT — 229 ms
Johannesburg to Miami latency and RTT — 259.9 ms
Johannesburg to Seattle latency and RTT — 281.2 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/jnb-nyc.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, Johannesburg → New York 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.

Johannesburg, South Africa → New York, USA RTT