Gear
- Standard bike (mandatory, no motor/electronics)
- Cue sheets (mandatory)
- Mobile phone (mandatory)
- Front handlebar light or helmet/head lamp (mandatory). Consider having both, especially valuable on turns when bike and head are not pointed the same way.
- Rear flashing light (mandatory)
- Spare tube(s). For longer events carry at least two tubes – this applies to tubeless as well
- Pump / inflation device / CO2 cartridges
- Tubeless tire sealant
- Multi-tool or allen keys such as a 4mm, 5mm and 6mm. A multi-tool with a chainbreaker and spare chain link are useful items to have
- Tire levers
- Something to make a tire boot (seal a tire gash). Park Tool offer a boot product; alternatively, wrappers from energy bars or even money
- Extra derailleur hanger?
- Duct/gorilla tape. Wrap around bike part or popsicle stick
- Some zip ties for emergency repairs
Source: http://www.gravelcyclist.com/1-useful-pointers
