Select the amount you would like to donate to Santiago Vega-Siurano's 50 mi challenge.
Calculate your donation based on an amount per-mile Santiago Vega-Siurano has committed to ride this September. Your total donation will be the amount you select multiplied by Santiago Vega-Siurano's 50 mi challenge goal and will be charged up-front.
A receipt will be sent to this email address
