<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:content="http://purl.org/rss/1.0/modules/content/"><channel><title>Optional on stacktrace.run</title><link>https://stacktrace.run/tags/optional/</link><description>Recent content in Optional on stacktrace.run</description><generator>Hugo</generator><language>en-us</language><lastBuildDate>Tue, 14 Jul 2026 00:00:00 -0400</lastBuildDate><atom:link href="https://stacktrace.run/tags/optional/index.xml" rel="self" type="application/rss+xml"/><item><title>Optional recovery — 5.8 km</title><link>https://stacktrace.run/posts/runs/2026-07-14-optional-recovery/</link><pubDate>Tue, 14 Jul 2026 00:00:00 -0400</pubDate><guid>https://stacktrace.run/posts/runs/2026-07-14-optional-recovery/</guid><description>Week 3: 5.83 km · 40:49 · 6:59/km · HR 119</description></item><item><title>Optional easy — 6.6 km</title><link>https://stacktrace.run/posts/runs/2026-06-30-optional-easy/</link><pubDate>Tue, 30 Jun 2026 00:00:00 -0400</pubDate><guid>https://stacktrace.run/posts/runs/2026-06-30-optional-easy/</guid><description>Week 1: 6.63 km · 37:15 · 5:37/km · HR 139</description></item></channel></rss>