Person

David Callahan

Co-CEO

David Callahan is a co-CEO of UltraSignup. The Running Event’s speaker biography describes his work on innovation in outdoor recreation and partnerships within the trail-running community.

Work: UltraSignup co-CEOOriginal public-source context; separate from dated TUM coverage.Source

4 TUM reports · Published coverage below

Publication history

Coverage over time

4 editorial issues

Distinct issues per publication month. Each issue counts once.

Jul 2024Peak 2Nov 2026

Sponsor mentions, repeated links and polls are excluded. Credits within editorial items may count. Read the supporting timeline ↓

In The Ultra Minute

Newest first

October 12, 2026Published in TUM

The platform rebuild announcement

TUM covered UltraSignup’s announced rebuild, named co-CEO David Callahan and noted planned conference demos. Announced benefits were not demonstrated outcomes.

Read full TUM issue

May 30, 2026Published in TUM

Fitt Insider’s dated trail-growth estimates

David Callahan: Commentary accompanying the cited May 20 growth account.

Read full TUM issue

May 21, 2026Published in TUM

David Callahan comments on SATISFY’s adidas collaboration

Callahan commented on the cultural positioning of SATISFY’s new multi-season adidas collaboration and compared its activation with earlier events.

Read full TUM issue

July 29, 2024Published in TUM

The named TrailCon events-panel participants

Named in the embedded TrailCon events-panel title; no additional job title, race result or watched/listened-to claim.

Read full TUM issue

Repeated links & other mentions (1)

May 22, 2026Repeated link

Most-viewed link: David Callahan on the SATISFY x Adidas activation

TUM repeated his take on the SATISFY x Adidas activation as a most-viewed carryover link.

Read full TUM issue

Connections

Commentary accompanying the cited May 20 growth account

Fitt Insider

TUM cited Fitt Insider’s May 20 growth and market estimates and Callahan’s commentary. These are attributed historical estimates, without adopting them as current independently verified market facts.

Source

Commented on the SATISFY x Adidas activation

SATISFY

TUM repeated David Callahan’s take on the SATISFY x Adidas activation among the previous issue’s most-viewed links.

Source

Commented on the SATISFY x Adidas activation

adidas

TUM repeated David Callahan’s take on the SATISFY x Adidas activation among the previous issue’s most-viewed links.

Source

Identified as UltraSignup co-CEO in this published item

TUM linked UltraSignup co-CEO David Callahan’s commentary on SATISFY’s new multi-season adidas collaboration. He compared its activation and cultural positioning with earlier Nike-related debates and events; those comparisons do not establish additional partnerships.

Source

Sources & notes

Dated TUM coverage

Source publication dates distinguish reporting from event dates.

Reported 2026-05-30

Fitt Insider’s dated trail-growth estimates

David Callahan: Commentary accompanying the cited May 20 growth account.

TUM · May 30, 2026

Reported 2026-05-21

David Callahan comments on SATISFY’s adidas collaboration

Callahan commented on the cultural positioning of SATISFY’s new multi-season adidas collaboration and compared its activation with earlier events.

TUM · May 21, 2026

Facts above link directly to their sources. Published TUM dates and public-source check dates describe different things.

Public background sources checked October 22, 2026. The selection contains 127 published issues.

The Running Event Undated public page; inspected October 22, 2026 · Checked Oct 22, 2026

Interface icons: Lucide · ISC license.

Public background & sources Checked October 22, 2026

Career context from one original public source. TUM’s dated reporting appears below.

This is a limited career snapshot, checked October 22, 2026. Source publication dates and event dates are shown separately.

TUM-only summary

An UltraSignup co-CEO named in TUM’s coverage of the platform’s announced rebuild.

October 12, 2026 UltraSignup is rebuilding its registration platform for runners and race directors. Co-CEO David Callahan

Links preserved from TUM coverage

Company announcementUltraSignup · platform and conference announcement
October 7 company release identifies co-CEOs Jay Kelley and David Callahan. Announced changes are not demonstrated product outcomes.
Published TUM issueThe Ultra Minute · October 12, 2026
The published newsletter is the authority for each October 12 mention.
Public source linked by TUMlinkedin.com · linked in 2026-10-12
Exact destination preserved from the published item. Supports the item’s original attribution; not a claim that its current state was freshly checked.
Published TUM issueThe Ultra Minute · 2026-05-30
Published article, 2026-05-30T13:35:08.243Z. Public original captured at 2026-10-22T21:15:43.963Z and projected to reviewed article text; no publishing-repository text pin is claimed.
Public source linked by TUMinsider.fitt.co · linked in 2026-05-30
Exact public destination in the published item. The archived TUM issue establishes the historical attribution; this is not a fresh verification of the destination’s current content.
Public source linked by TUMlinkedin.com · linked in 2026-05-30
Exact public destination in the published item. The archived TUM issue establishes the historical attribution; this is not a fresh verification of the destination’s current content.
Published TUM issueThe Ultra Minute · 2026-05-22
Published article, 2026-05-22T04:14:25.716Z. Public original captured at 2026-10-23T01:32:51.614Z and projected to reviewed article text; no publishing-repository text pin is claimed.
Public source linked by TUMlinkedin.com · linked in 2026-05-22
Exact public destination in the published item. The archived TUM issue establishes the historical attribution; this is not a fresh verification of the destination’s current content.
Published TUM issueThe Ultra Minute · 2026-05-21
Published article, 2026-05-21T04:13:04.643Z. Public original captured at 2026-10-23T01:32:51.613Z and projected to reviewed article text; no publishing-repository text pin is claimed.
Public source linked by TUMlinkedin.com · linked in 2026-05-21
Exact public destination in the published item. The archived TUM issue establishes the historical attribution; this is not a fresh verification of the destination’s current content.
Published TUM issueThe Ultra Minute · 2024-07-29
Published article, 2024-07-29T14:07:40.458Z. Public original captured at 2026-10-30T17:04:58.576Z and projected to reviewed article text; no publishing-repository text pin is claimed.
Public source linked by TUMpodcasts.apple.com · linked in 2024-07-29
Exact public destination in the published item. The archived TUM issue establishes the historical attribution; this is not a fresh verification of the destination’s current content.

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