The Human Powered Vehicle Festival (HPVF) is hosted by the Friends of the Nashua River Rail Trail, and is held every autumn in Ayer, Massachusetts. It's a free, informal celebration of the Nashua River Rail Trail, and of getting out and about under your own power (with particularly enthusiastic participation from people who do so on out-of-the-ordinary vehicles). We're aware of only a few similar events in this area.
The next festival is tentatively scheduled for Saturday, September 13, 2014. (We will postpone to the rain date of September 20 if and only if there's a steady rain on the morning of the 13th. If you are unsure about whether there's been a postponement due to rain, you can send us email to check, or look for an announcement here.)
If you would like to be reminded a month before the festival, or if you have questions or suggestions, or would like to be involved, just let us know.
The schedule for the day typically includes a road ride in the morning and a parade in the afternoon, both of which you can participate in if you'd like. You are welcome to try riding almost any of the vehicles that show up (though please find and ask the owner before you start riding an unattended vehicle). We've had a great time in previous years, as you can see in the pictures from 2013, 2012, 2011, and 2010. Check the maps and directions to see how to get to the festival site. Bring your own food, or enjoy one of the local eateries.