The question 'I' m arriving into X station in London at 8.15am on Saturday. What parkruns can I get to in time?' comes up fairly often on parkrun tourism groups, so I thought I'd try to put a simple list together to help. For the list I have used the 14 central London terminal stations plus the 4 central London through-stations that are considered terminals for ticketing purposes. These are collectively known as the London Station Group. The timings are based on the overall estimated journey time from the point the journey begins to arrival at the parkrun start area....