A group of about 2,000 mainly Central American migrants continued their mass exodus from the southern Mexico city of Tapachula Sunday, reaching a town about 16 miles away.
Migrants walked in the early morning, starting out before dawn, to avoid the burning heat.
Mostly from Honduras and El Salvador, many were accompanied by small children.
By midday on the second day of their march they reached the town of Huehuetan, in southern Chiapas state.
Unlike previous marches, the one that started Saturday from Tapachula did not include as many Haitian migrants, thousands of whom reached the U.S. border around Del Rio, Texas in September.
Tens of thousands of migrants from Honduras, El Salvador and Haiti have been waiting in the southern city of Tapachula, near the Guatemalan border, for refugee or asylum papers that might allow them to travel, but have grown tired of delays in the process.
On the first day of their march, the migrants pushed past a line of state police who were trying to stop them.
There were minor scuffles and a small child suffered a slight head wound, but the migrants continued on their way.
They made it only a few miles to the nearby village of Alvaro Obregon Saturday before stopping to rest for the night at a baseball field.
Police, immigration agents and National Guard have broken up smaller attempts at similar breakouts earlier this year.
In August, National Guard troops in riot gear blocked several hundred Haitians, Cubans and Central Americans who set out walking on a highway from Tapachula.
Mexico requires migrants applying for humanitarian visas or asylum to remain in the border state of Chiapas, next to Guatemala, for their cases to be processed.
In January, a larger caravan of migrants tried to leave Honduras but was blocked from crossing Guatemala.
The marches are reminiscent, but nowhere near as large, as the migrant caravans that crossed Mexico in 2018 and 2019.