About the Frost or Fog 10-Mile, 1/4 Marathon & 5K
All three courses run through Upper Bidwell Park and share the same opening stretch along a levee before branching off at different points. The surface shifts as you go, mixing gravel, trail, and road. The longer distances push up Upper Park Road and turn back, giving those routes a genuine workout. The 5K loops through a parking lot before heading back across a creek bridge to the finish.
Packet pickup is the evening before the race at a Round Table Pizza on Forest Avenue. On race morning, Bidwell Perk provides coffee before the start.
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Frost or Fog 10-Mile, 1/4 Marathon & 5K 2026 Results
Going by the 2026 results, this is a small, friendly field, and the spread of finish times is wide, so this is a mostly recreational race rather than one for club runners.
5K Results · 2026
111finishers
17:58winner
35:19median
1:09:11cutoff
Top 3: Jo Jo Simsic (17:58) · Colton Parker (20:17) · Bobby Hastings (20:27)
10 Miles Results · 2026
93finishers
1:04:10winner
1:35:26median
2:28:17cutoff
Top 3: Edward Stace (1:04:10) · Katie Crane (1:07:41) · Billy Harkness (1:08:18)
6.55 Miles Results · 2026
75finishers
43:15winner
1:06:35median
1:44:30cutoff
Top 3: William Parnell (43:15) · Miguel Madrigal (43:29) · Ranae Nelson (46:35)
The Frost or Fog 10-Mile, 1/4 Marathon & 5K has been held every year since at least 2012. That is as far back as RunSignup's records for this race go, so it may well be older.
How we calculate these stats: RunSesh calculates these figures from the most recent published results of past editions, sourced from RunSignup. We show aggregates only: field size, winning and median times, and the cutoff. We never publish individual finisher tables. Last updated Nov 12, 2026.
Distances & Start Times
10 Miles1/16/2027 09:00$45
6.55 Miles1/16/2027 09:15$40
3.1 Miles1/16/2027 09:30$35
Going for a Time?
Set a goal and get a pace band: every mile split on a card sized for your phone lock screen, so race morning needs no math.
Not sure what to aim for? The 5K pace chart lists the pace for every finish time.
Where to Stay
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