The selected marathons are a combination of relevance to the selected charitable organization or macro-level cause and timing. For example, in Europe, In the Running is donating to a peace-building organization in Ireland so Erin will run the Dublin Marathon. This will enable her to run the marathon and visit staff members of the organization during her trip to Ireland. Erin works full-time as an analyst at a financial firm in Manhattan, so balancing trips to far-off places like Australia, Africa, Asia, and Antarctica presents unique challenges...before she even starts to think about the whole running really far challenge...