You could always use multiple cassettes. It takes <5mins to change a cassette. Depending upto the terrain.
Or if you've got a spare wheel, I presume you would, you could use that and swap wheels.
@skinny started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
You could always use multiple cassettes. It takes <5mins to change a cassette. Depending upto the terrain.
Or if you've got a spare wheel, I presume you would, you could use that and swap wheels.