Begin your rune gathering venture by venturing to the Third Church of Marika, marked on the map. If you haven't discovered the Site of Grace there yet, travel to Elden Ring Runes Agheel Lake North, where Torrent was bestowed upon you by Melina. Follow the path until you reach the Church, bypassing the formidable giant stationed nearby. Upon activating the Site of Grace inside the Church, venture to the back where a transporter awaits near a small cove.
Upon traversing through the transportation portal, you'll arrive at the Bestial Sanctum within Dragonbarrow. Here, Gurranq, a creature rewarding Deathroots, resides (a topic for another guide). However, our focus lies outside.
Surveying the fields, you'll spot a massive dragon knight, the Black Blade Kindred, guarding the Sanctum. Avoid confrontation with this boss. Instead, move to the left side of the steps and leap into the field. These fields house diminutive, statue-like warriors—the prime targets for your rune farming endeavor.
These enemies are relatively manageable to defeat, especially with their susceptibility to staggering. Sneak behind them for critical hits or engage them directly, yielding over 1,000 runes per kill. Stick to the left side of the balcony for solo encounters or challenge the right side's groupings if you're up for a more demanding fight. Repeat this process by respawning enemies at the Site of Grace within the Bestium Sanctum to cheap Elden Ring Runes amass runes rapidly.