I’ve recently joined a gym (with a swimming pool too) and did an eighth of an ironman there the other day after work (I included the 16k bike to and from work) so I actually did: 22.5k bike on a kind of recliner bike(just 6.5k at gym)5k run on treadmill500m swim in the pool. Was thinking I might try and continue this and perhaps once a month I have a big go at a triathlon in the gym, as high a percentage of an IM as possible. Reckon I could do a quarter of an IM now with little problem, then it’d start getting tough, might see if I can do a half IM Obviously all these disciplines are far easier in a gym (the bike particularly so I’m thinking – how do you know what setting on an exercise bike is equivalent to biking outside on the flat? – they say an incline of 1 degrees on a treadmill makes it the equivalent of running outside with air resistance), but it’s better than nothing. Just wandered if anyone else’d tried something like this. I might make a full “gym IM” my target for the same day as the UK IM next year – all day down the gym. Saves a lot of money on entry fees and bikes (I use a cheapo Halfords hybrid for my work commute) and transport.