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Moonlight on Mt. Ascension 12 Hour Night Trail Run

Moonlight on Mt. Ascension 12 Hour Night Trail Run, Helena
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Trail in United States, Helena

Distances

  • Trail

    Figure 8 Loop (Mt. Ascension + Rodney Ridge)

    29.3 km

    Start: Jun 20, 12:00 AM

  • Running

    Fat Ass

    16.9 km

  • Running

    Big Ass

    11.3 km

  • Running

    Skinny Ass

    5.6 km

  • Running

    Half Ass

    2.8 km

About

A 12-hour night trail run on Helena’s South Hills trails with a modified figure-8 loop on Mt. Ascension and Rodney Ridge. Runners complete as many full loops as possible, with aid at the Old Shooting Range Trailhead.

Catering & aid stations

Aid station at Old Shooting Range Trailhead stocked with typical aid station food, HEED, Perpetuem, Hammer Gel, water, plus soup, coffee, and hot chocolate.

Pacers

Runners must complete the Mt Ascension loop (clockwise), and then the Rodney Ridge loop (counterclockwise). The overall and age division winners are determined first by mileage covered, then by time. Runners must complete one full figure 8 to be an official finisher. Each completed figure 8 counts as 11.5 miles; the Mt. Ascension loop counts at 7.5 miles and the Rodney Ridge loop counts as 4 miles. There is only mileage credit for partial loops when, after the first full lap and on the last lap, you can either complete the Mt. Ascension or Rodney Ridge loop only. Runners finishing a complete figure 8 after 6:00 a.m. will only be allowed to continue on the Rodney Ridge loop.

Results

View official results

Typical weather in Helena

Monthly averages based on historical data (2000–present).

Jan29°12°
08:09
17:07
Feb31°12°
07:34
17:53
Mar42°22°
07:41
19:35
Apr52°29°
06:41
20:17
May63°40°
05:54
20:56
Jun72°48°
05:35
21:24
Jul84°57°
05:51
21:19
Aug82°55°
06:28
20:39
Sep71°46°
07:07
19:41
Oct56°34°
07:47
18:42
Nov40°22°
07:32
16:56
Dec29°13°
08:07
16:42

Weather data by Open-Meteo

Route maps

Last updated: Jun 5, 2026, 11:51:44 PM

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