Marta won the bunch sprint ahead of Silvia Perisco (UAE) and Victoire Berteau (Cofidis)
Marta held off the peloton for two laps to take her second win of the season, with the race coming right down to the line.
Following a crash in the early stages of stage one of the Simac Ladies Tour, Kathrin was taken to hospital for x-rays where it was confirmed that she has a broken collarbone.
An aggressive race from the team saw attacks, counterattacks and textbook teamwork before an almost perfect leadout saw Martina take second place.