The Via Asinaria was an ancient Roman road starting at the Porta Asinaria

Porta Asinaria

The Porta Asinaria is a gate in the Aurelian Walls of Rome. Dominated by two protruding tower blocks and associated guard rooms, it was built between 270 and 273, at the same time as the Wall itself...

 in the Aurelian Wall. It could be accessed from the via Latina

Via Latina

The Via Latina was a Roman road of Italy, running southeast from Rome for about 200 kilometers.It led from the Porta Latina in the Aurelian walls of Rome to the pass of Mons Algidus; it was important in the early military history of Rome...

, and Belisarius

Belisarius

Flavius Belisarius was a general of the Byzantine Empire. He was instrumental to Emperor Justinian's ambitious project of reconquering much of the Mediterranean territory of the former Western Roman Empire, which had been lost less than a century previously....

 diverged from the via Latina in his advance on Rome so that he would enter the city through the Porta Asinaria (Not. app.; Procop. BG I.14.14). It is also mentioned by Festus 282 "retricibus: aqua eo nomine quae est supra viam Ardeatinam inter lapidem secundum et tertium, qua inrigantur horti infra viam Ardeatinam et Asinariam usque ad Latinam", showing it must have run towards the via Appia

Appian Way

The Appian Way was one of the earliest and strategically most important Roman roads of the ancient republic. It connected Rome to Brindisi, Apulia, in southeast Italy...

 and the via Ardeatina

Via Ardeatina

Via Ardeatina was an ancient road of Rome leading to the town of Ardea, after which it is named. Ardea lay 24 miles distant from Rome.-External links:*...

. Its course is debated, but probably the initial section of the modern Via Appia Nuova probably coincides with it (Bull. d. Inst. 1861, 72; RE II.1581; T. II.28‑33; PBS IV.42‑45). The via Tusculana splits off from it about 400 metres from the gate (PBS IV.51 sqq.).

Source

• A Topographical Dictionary of Ancient Rome