Arizona · Rock climbing · Phoenix

Gremlins

12 routes
5.5 – 5.11a
Sport · Trad
Nov–Apr
best months

Blocked at last check

Weather is adverse · OpenWeather · checked 14 h ago

Gremlins is a climbing area in Phoenix South Mountain Park, Arizona, on city land. It sits among a cluster of other climbing spots, including South Mountain, Wildlife Canyon and Bob Ross Wall, all within about a tenth of a mile. The area is close to several hiking trails, so it works well as a stop for climbers and hikers alike. The climbing here is sport-oriented, with 11 sport routes and one trad route among the 12 listed. Grades run from 5.5 to 5.11a, with the hardest route named Gremlins at 5.11a. Staring at the Sun is the only trad route, a 5.7 that was first climbed by SR and MK on May 22, 2019. Winter and early spring are the most comfortable times to visit. Typical averages from a nearby weather station in South Phoenix show January highs around 67°F and lows near 42°F, while summer highs climb into the low 100s. That station sits about 390 feet lower than the park, so temperatures on the mountain run a little cooler. Nearby, Las Lomitas Trail is about 0.3 miles away and Judith Tunnell Challenge Trail about 0.5 miles. Bajada Trail and Max Delta Trail are each roughly 0.8 miles off.

  • Best time to go · Nov–Apr

    Best time to visit Gremlins

    Best months: November–April. Best months have typical highs of 55–85 °F, lows of 30 °F or warmer (32 °F where the station doesn't record snow), at most one snowy day and no more than 12 wet days.

    1. Jan

      67° / 42°

      4 wet

    2. Feb

      71° / 44°

      4 wet

    3. Mar

      78° / 48°

      4 wet

    4. Apr

      85° / 54°

      2 wet

    5. May

      93° / 61°

      1 wet

    6. Jun

      101° / 69°

      1 wet

    7. Jul

      103° / 77°

      2 wet

    8. Aug

      101° / 78°

      3 wet

    9. Sep

      97° / 71°

      3 wet

    10. Oct

      87° / 59°

      2 wet

    11. Nov

      74° / 48°

      2 wet

    12. Dec

      65° / 41°

      3 wet

    Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at South Phoenix, AZ, 2.7 mi away at 1,155 ft. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Routes (12)