2. Salomon base layer top

This will sit next to Ryan's skin, so it needs to provide ventilation and wicking.

3

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Food and nutrition

will be an important part of a succesful challenge of the DGT. Red Bull, energy bars, nuts and whey powder are all part of the magic mix for success.

4. Suunto Ambit2

S

This mini-computer on a wrist will provide the live stats the pair need, such as distance, speed and altitude, as well as a GPS track of the route when the run is done.