The Guernseyman’s dream is to double up across the mixed and men’s 4x400m relays out in Tokyo, where he has now arrived following a settling period at Great Britain’s holding camp in Yokohama.
Stifling heat and the spectre of Covid have provided extra obstacles for the first-time Olympian, but he has produced some ‘positive sessions’ with teammates nonetheless.
‘It’s obviously really hot and really humid,’ he said while still in Yokohama.
‘Still acclimatising and getting over the jet-lag and things like that, but that’s why you come out so early, so that was a good decision from GB.
‘Tricky to breathe and regulate your temperature when you’re trying to recover between high-intensity reps out here, in these conditions, and obviously with all the Covid protocols, it is a bit different to any other trip.
‘Team GB are looking after us well and we’re all supported really well.’
Games officials were, however, less supportive of the six GB athletes who were on a flight on which a passenger tested positive.
GB were left seeking answers from officials who insisted these athletes serve 14 days’ hotel-room isolation – except to train solo – despite multiple negative tests.
Chalmers has thankfully enjoyed a less-restricted routine, including access to familiar physiotherapists.
‘It’s really good to have that routine in some senses, in terms of staff knowing your body, being able to get me right, and being able to crack on with training,’ he added.