Participant Sports (IAB 409) is an audience segment from the IAB Audience Taxonomy 1.1 taxonomy. The Trillboards CV pipeline has observed 1,197 qualifying signals for this segment over the last 30 days across an active footprint. Buyers can target Participant Sports programmatically via the OpenRTB bid request using segtax=4 audience codes.

IAB Audience Taxonomy 1.1 · segtax=4 · segment 409

Participant Sports

Interest / Healthy Living / Fitness and Exercise / Participant Sports

Observations (30 d)
1,197
Active screens (network)
24,210

Participant Sports is Unique ID 409 in the IAB Audience Taxonomy 1.1, in the Interest branch under Interest → Healthy Living → Fitness and Exercise. Trillboards emits it on the bid request as a segtax=4 segment, the code every IAB-compliant DSP already reads, so a buyer already running "Participant Sports" elsewhere can point that strategy at DOOH screens without rewriting taxonomy. Over the most recent 30-day window the network logged 1,197 cohort observations tagged with this segment across 24,210 approved screens.

Trillboards inventory concentrates in Taxi Rideshare Tv, Convenience Store, Retail Other. Taxi Rideshare Tv is the largest category at 11,909 approved screens, average floor $2.33 CPM. Those are network-wide venue counts; add a venue filter to the line item to hold delivery to the surfaces you want.

Buying one or two tiers up captures more of the network and less of the segment; buying this leaf does the reverse. The OpenRTB payload carries every level of the chain, so a single bid request can be targeted at Participant Sports or at any node above it. Interest cohorts land hardest when the venue reinforces the interest, so pair the segment with a venue filter.

Buy this audience

This page is the taxonomy reference. What you buy is a curated package: 107 audiences across 49 US markets, $4.00–$17.82 CPM, each one behind a live private marketplace deal. Browse the curated audience catalogue, or check the creative specs first.

Largest venue categories on the network

Adjacent segments under the same parent

Parent IAB nodes

  1. Interest
  2. Healthy Living
  3. Fitness and Exercise
  4. Participant Sports (this page)

Related Trillboards data

Cross-references computed from 30-day aggregate co-occurrence across the Trillboards network. Aggregate-only, no per-screen identifiers.

Part of the IAB Audience Taxonomy 1.1 segment index. Trillboards is a DOOH ad-server platform exposing aggregate cohort data only; per-screen and per-person identifiers are never part of the public surface.

Data freshness: 30-day rolling window through .

Frequently asked questions

What is the Participant Sports IAB audience segment?
Participant Sports is segment ID 409 in the IAB Audience Taxonomy 1.1. It represents a specific audience cohort defined by behavioral and demographic signals. The Trillboards CV pipeline emits this segment when on-device observation matches the IAB-published criteria, with all per-person identifiers stripped before the signal leaves the device.
How is Participant Sports measured on Trillboards DOOH screens?
Each Trillboards screen runs an on-device CV pipeline that emits audience signals like Participant Sports as aggregate counts per ad request. The signal rides the OpenRTB bid request as a segtax=4 segment identifier. No per-person identifiers leave the screen; only aggregate audience composition reaches demand partners.
Can buyers target Participant Sports programmatically?
Yes, Participant Sports (IAB 409) is targetable via OpenRTB 2.6 bid request user.segment with segtax=4. The Trillboards SSP accepts audience deal IDs and segment-based targeting from any compliant demand partner. Targeting uses screen-level aggregate audience composition rather than any per-person identifiers.