Army ultrarunner Anna-Marie Watson starts her third race season with the Transgrancanaria this week.
With a distance of 125 kilometres to complete in under 30 hours, the event demands courage and determination from competitors.
She's tailored her life so she can feature in as many events as possible and admits it's essential to be at ease with one's solitude.
A background in Ironman triathlon has helped the former regular turned reservist condition her inner engine.
Notable race achievements include a top-50 finish and second female overall in the 2015 Marathon Des Sables.
Her career highlight, though, was last year when she finished seventh in the Ultra-Trail du Mont-Blanc.
2018 will see Anna-Marie tackle more events in the Ultra-Trail World Tour series but despite her success, she still feels a novice on the circuit.
Away from her role with the reserves, Anna-Marie runs her own performance coaching business.
Following her stint in Gran Canaria, she will then have just over a month to prepare as she lines up for her second Marathon Des Sables.