$ mtr -n -r -c 100 --json 10.11.11.2

STDOUT
{
    "report": {
        "mtr": {
            "src": "ubuntu-HP-ProBook-440-G5",
            "dst": "10.11.11.2",
            "tos": 0,
            "tests": 100,
            "psize": "64",
            "bitpattern": "0x00"
        },
        "hubs": [
            {
                "count": 1,
                "host": "10.11.11.2",
                "Loss%": 0.0,
                "Snt": 100,
                "Last": 0.787,
                "Avg": 1.529,
                "Best": 0.249,
                "Wrst": 1.803,
                "StDev": 0.334
            }
        ]
    }
}

STDERR