- What is a pace band and why do runners use it?
- A pace band is a narrow strip of paper worn on the wrist during a race. It shows the clock time you need to pass each checkpoint to finish in your goal time. Instead of doing mental arithmetic mid-race, you glance at your wrist — if the clock matches (or beats) the printed time, you're on target. Ultramarathon runners especially rely on pace bands because GPS watches can struggle in remote terrain and races can last many hours overnight.
- Does this tool work for ultramarathons and non-standard distances?
- Yes — that's the main point. Type in any total distance: 50K (50 km), 50 miles (80.47 km), 100K, 100 miles (160.93 km), or any custom event. The generator accepts decimal distances (e.g. 42.195 km for a marathon) and any goal time up to 99 hours. Select km or miles for the distance and interval units independently.
- What checkpoint interval should I choose?
- For road races, every 5 km or every 1 mile works well — those markers are usually painted on the road. For trail ultras, consider matching your aid-station spacing. If the race website lists aid-station locations, enter those exact distances manually using the "Custom" interval and note them in the race name field. Keep the band readable: more than 20–25 rows tends to make the font too small to read while moving.
- How do I print and prepare the wristband?
- Download the PDF and print it on regular paper at 100% scale (no "fit to page" scaling). The band is printed at 200 mm wide, which fits on A4 or US Letter in landscape orientation. Cut along the outer edge, fold it face-out around a strip of clear packing tape or contact paper for waterproofing, then secure it with tape or a safety pin around your wrist. Many runners laminate a strip of duct tape on the back for durability.
- Is this even-split pacing? Can I add a positive or negative split?
- This generator produces pure even-split times — every kilometre or mile is assigned the same pace. Even splits are the scientifically optimal strategy for most road races. For trail ultras with significant elevation change, many runners run slightly slower on climbs and faster on descents, but they still use their even-split band as a reference ceiling — if you arrive at a checkpoint ahead of the printed time, you have a buffer. A future version may support custom per-segment adjustments.