Theoretically Trish Mulligan's smashed spaceship's contains everything she needs to survive; maps, food, water and her solar-powered spacesuit. She manages to broadcast a distress signal to Earth, but to survive until they arrive she'll also need to outrun the sunset. If the sun sets, her suit's automated life support system will stop working and she'll die on the moon. So, she'll have to race the sun. On Earth it would be an interminable marathon pace but at least there she wouldn't be alone.
Though author Geoffrey Landis is only a part time science fiction writer, he works for NASA as his day job; you wouldn't know it by this story. A Walk in the Sun reads like it was written by a Grandmaster!
"An AWESOME story, what is not to love?" (SFFaudio.com)