Well, besides the day to day training always with a rucksack, yesterday was another significant endurance test. We covered 90km along the Elora Cataract Trailway (http://www.trailway.org/) in south-central Ontario. 45km by foot, and 45 km back by bike. Not difficult terrain in terms of climbs or descents, or the surface which is a gravel path - just very long ! The trail was originally the route of the Credit Valley Railway.