Challenges celebrate personal achievements and unique experiences, and have become a popular way for people to stay engaged, set goals and keep the parkrun experience fresh week after week. Attend a parkrun in five different countries to complete this challenge Our triple walled, personalised, stainless steel 500ml bottles keep your drink cold for up to 24 hours. Please note: Personalised products are excluded from our 30 day return policy; therefore, please ensure all details are correct prior to submitting your order.