www.ultramarathon.hu

www.ultramarathon.lap.hu

www.runnersworld.co.uk

www.iau-ultramarathon.org

www.hunrun.com

http://www.tavfutomuvek.extra.hu

http://www.futas.cjb.hu

http://www.futas.net

http://www.paul-tergat.net

http://www.gmaps-pedometer.com

If you know a good website, e-mail me and I will put it in the list.