Most of the roads in Uist are fairly flat although there are some strenuous climbs on the main road when you come off the ferry in Eriskay.
However the visitor must bear in mind that there is a factor with a far stronger influence. Being treeless and exposed, the wind can have the greatest effect on cycling progress in these islands.
If you are planning a trip the prevailing wind direction is South West although in these days of climate change things now tend to be more unpredictable. However, winds blowing from other directions are likely to be less strong than the South Westerly.
If you are based on the islands, when you have a choice head into the wind in the morning if going on a day trip. Hopefully you will have the wind behind you on your return trip when you are more likely to be tired. If you do find yourself struggling against a strong headwind do not try to maintain what you perceive to be normal progress - you will just exhaust yourself. Drop down a gear or three and just imagine you are going on a longer journey. A stiff headwind can easily double your journey time.
Visiting cyclists should be flexible when planning their journey. If the timetable does get tight the larger buses on the public service runs should be able to help out if you find yourself struggling to catch a flight or ferry.
Of course we have lots of days when there is little or no wind, but being forewarned means you can be forearmed. During the summer months the weather should not be a problem and the number of cyclists visiting the islands is increasing every year