In addition to climbing individual peaks, there is the challenge of a full traverse of the main Black Cuillin ridge. Although only in length, the average traverse is likely to take 15-20 hours from sea level at Glenbrittle to the bar of the Sligachan Hotel owing to the difficulty of the terrain and route-finding problems. The first recorded traverse in under 24 hours was in 1911 by L. Shadbolt and A. McLaren. The record for the full traverse, set by Finlay Wild in October 2013, stands at 2 hours, 59 minutes and 22 seconds (though this time is from Gars-bheinn to Sgùrr nan Gillean and does not include the initial ascent from Glenbrittle or the final descent to Sligachan). A further issue for those attempting the full traverse is the fact that there are no natural sources of water on the ridge (except for winter snows and melt water), although there are a few high burns just off the main ridge from which water can be obtained.