Running, marathons and blood donation

Usually yes, with a small check first. Fit runners are great donors, just leave a gap after big races before donating. ## The short answer Race recovery and donation recovery draw on the same reserves. After a half or full marathon, commonly a week or more before donating; easy runs need no gap. ## At the screening desk Tell the staff: Recent race dates. That conversation is confidential and takes a minute, it exists so the medical officer can clear you safely on the day. Everyone meets the same basics: age 18,65, weight 50 kg+, haemoglobin on target, feeling well today. Men donate every 3 months, women every 4, the rest rules, simply. Not sure about your case? Try the Can I donate? checker or read who can donate and the deferral list in plain words. Still weighing it? Is blood donation safe? and the honest side-effects list are straight answers, not brochure talk. ## The one line that matters The medical officer at the centre makes the final call on the day, with your name, your file and your actual reading in front of them. Use this page to walk in informed, not to overrule anyone. Related: blood donation and exercise