She fears she would be blamed if something happened while she was out alone after dark, and now runs with a group once a week to feel safe.
“The dark is actually really nice, I see owls, hedgehogs, toads, the stars,” Beatrice said.
“The concern is a tiny minority of men using the dark to commit crimes.”
Lucy Lavington, 18, from Abergavenny, Monmouthshire, said she was used to receiving unwanted attention from men while out running.
“You literally just want to get home and it puts you off going for a run the next time because it just scares you,” Lucy said.
She aims to run at least 6km (3.7 miles) per day, but feels unsafe during winter.