She also wears wool socks , mittens and a skin block such as Vaseline if it 's windy .
D.C. runner Kate Langbein suggests wearing a throwaway long - sleeved T - shirt until the race begins .
Kate Langbein also wears wool socks , mittens and a skin block such as Vaseline if it 's windy .
D.C. runner Kate Langbein suggests wearing a throwaway long - sleeved T - shirt until the race begins .