How we make our routes

The hills

Every Munro, Corbett, Graham, Donald, Wainwright, Hewitt and Welsh 3000 on TRXO comes from the Database of British and Irish Hills (DoBIH, CC BY 4.0), maintained by hill baggers who survey and check the lists. Heights, grid references, drop and summit features are theirs. We sort the hills into regions so you can browse them by area.

The route lines

Each route starts from a public road, station or ferry, chosen by real walking distance rather than a straight line. Where a path exists, the line follows it as mapped in OpenStreetMap (ODbL), routed on foot with mountain paths allowed. Where there's no mapped path, such as open hillside or some ridges, the line goes across the hill, following the crest between summits and contouring round spurs on open ground. Those sections are pathless on the ground too, and the walk page says so.

Distance, ascent and time

Distance comes from the route line. Ascent comes from the EU-DEM 25 m terrain model, with each summit pinned to its surveyed height. Times use Naismith's rule (5 km an hour, plus an hour for every 600 m of climb), with extra allowance for stops and steep descents. Pathless sections can differ from what you'll actually walk, so treat the figures as a guide.

How we check routes

Every route is drawn on a map and compared with the paths, the terrain and published figures, and we rework any that cut across crags, double back or start somewhere private. Each walk page shows when its route was mapped. We haven't yet walked every route ourselves, and the pages say so: we're working through them, starting with the scrambles. If you spot something wrong, please tell us.

Summit forecasts

Forecasts come from the Met Office: the DataHub site-specific forecast where available, otherwise the Met Office UK model via Open-Meteo, worked out at the summit's height. They're there to help you plan; always check a mountain forecast such as MWIS before you go.

Photos

Photos are our own, from Unsplash, or freely licensed on Wikimedia Commons (public domain, CC0, CC BY or CC BY-SA). Where a credit is due it sits behind the small “i” on the image, with a link to the source and licence.

Reviews and condition reports

Reviews, condition reports and forum posts on TRXO come only from walkers. We don't write, buy or invent them, and we don't remove honest negative reviews.