Registered Participants
Use paid or confirmed registrations as the base, then account for expected late registrations if your order must be placed before registration closes.
Buyer Guide · Race & Events
How Many Race Shirts Should You Order?
The right quantity is not simply your current registration count. A race apparel plan should separate participants, staff, volunteers, sponsors and contingency stock, then use the event timeline to decide when quantities should be frozen.
Start With Five Separate Quantity Buckets
Staff & Crew
Keep staff, pacers, medical teams and operations shirts separate from participant inventory so operational needs do not consume participant sizes.
Volunteers
Volunteer apparel often has its own color, logo treatment or size mix. Treat it as a separate order line even when it uses the same base garment.
Sponsors & VIPs
Sponsor, partner and VIP allocations should be listed explicitly rather than absorbed into a vague extra percentage.
Contingency
Keep a controlled reserve for size swaps, damaged pieces, late operational additions and unexpected demand. The reserve should be planned, not guessed at the last minute.
Retail or Post-Race Sales
If shirts will also be sold, separate sale inventory from guaranteed participant allocation so retail demand cannot create shortages at check-in.
Do Not Use One “Extra Percentage” for Everything
A blanket over-order percentage can hide where the real uncertainty sits. If participant registration is already stable but volunteer recruitment is still open, the reserve should not be distributed equally across every group. Build contingency by audience and by size.
How to Think About Size Ratios
The best size ratio comes from your own registration history. If this is the first edition, collect shirt size during registration as early as possible and update the forecast regularly. Avoid copying a generic size ratio from another event when your audience, market, gender mix or garment fit may be different.
Also confirm whether the selected shirt is unisex, men's/women's specific or offered in multiple fits. The more fit options you introduce, the more complex the size matrix becomes and the more important it is to freeze data before production.
Set a Quantity Freeze Date
Work backward from the required delivery date. The quantity freeze should happen early enough to leave time for artwork approval, production, quality control, packing and transport. If registration continues after the freeze, decide in advance whether late entrants receive the same item, a different item or no guaranteed shirt.
Packing Can Reduce Distribution Errors
Ask for cartons or inner packs to be separated by size, role, wave, staff group or registration batch where useful. A good packing plan does not reduce the number of shirts you need, but it can reduce mistakes when thousands of pieces have to be distributed quickly.
A Practical Quantity Planning Workflow
Step 1: separate participants, staff, volunteers, sponsors/VIPs and retail.
Step 2: collect the best available size data for each group.
Step 3: add a controlled contingency where uncertainty actually exists.
Step 4: set a freeze date and document what happens to late registrations.
Step 5: confirm the packing and labeling rules before bulk production.
Related Race Planning
Race & Event Solutions · Race Merchandise Planning Checklist · Race Merchandise Budget Guide · Marathon Supplier Guide
Race Quantity Planning
Build the Quantity Plan Before You Lock the Order
Share expected registrations, staff groups, target date and delivery location. KITSPAN can help structure the order by audience, size and packing requirement.