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SF MARATHON 1ST HALF 2026

Cassidy Castro

Bib: 20908•F•Age: 22

Castro Valley, CA

0:00
0:00
/ mi
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Overall
#0 / 6575
Gender (Female)
#0 / 2930
F20-29
#0 / 353
Race Day Weather
59°/49°F
scattered clouds

⏱️ Race Timeline

Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
2M
9:40/mi
19:20
→ flat
4M
10:57/mi
41:13
↑ 67↓ 69
6M
12:06/mi
1:05:25
↑ 1231.1%
8M
11:51/mi
1:29:08
↑ 166↓ 531.1%
9.6M
11:51/mi
1:48:06
↑ 68↓ 1931.5%
10M
24:04/mi
1:57:43
↓ 241.1%
10.5M
5:16/mi
2:00:21
↓ 732.7%
12M
16:45/mi
2:25:28
↑ 2803.2%
Finish· 13.11 mi
11:32/mi
2:38:16
↑ 14↓ 891.3%

The Course

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Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time1:05:25
Pace10:54 /mi
2nd Half
Distance7.11 mi
Time1:32:51
Pace13:04 /mi
📊Positive Split: 41.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi06:59:4019:209:4019:20
9:40
-
4M
4.00 mi07:21:3341:1310:1821:53
10:57
+1:17
6M
6.00 mi07:45:451:05:2510:5424:12
12:06
+1:09
8M
8.00 mi08:09:281:29:0811:0823:43
11:51
-0:15
9.6M
9.60 mi08:28:261:48:0611:1618:58
11:51
0:00
10M
10.00 mi08:38:031:57:4311:469:37
24:04
+12:13
10.5M
10.50 mi08:40:412:00:2111:282:38
5:16
-18:48
12M
12.00 mi09:05:482:25:2812:0725:07
16:45
+11:29
Finish
13.11 mi09:18:362:38:1612:0412:48
11:32
-5:13

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

5:16 /mi

Average Pace

12:04 /mi

Slowest Pace

24:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:38

2% of race

Time at Steady Pace

2:00:54

76% of race

Time at Slower Pace

34:44

22% of race

Average Pace: 12:04 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi3.3mi6.6mi9.8mi13.1mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
2M
2.00 mi06:59:4019:209:4019:20
9:40
#2534
4M
4.00 mi07:21:3341:1310:1821:53
10:57
#3387
6M
6.00 mi07:45:451:05:2510:5424:12
12:06
#4060
8M
8.00 mi08:09:281:29:0811:0823:43
11:51
#4144
9.6M
9.60 mi08:28:261:48:0611:1618:58
11:51
#4533
10M
10.00 mi08:38:031:57:4311:469:37
24:04
#4626
10.5M
10.50 mi08:40:412:00:2111:282:38
5:16
#4602
12M
12.00 mi09:05:482:25:2812:0725:07
16:45
#4648
Finish
13.11 mi09:18:362:38:1612:0412:48
11:32
#4602
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior
Featured Segment

Garmin Challenge

Top 77%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

12:15

Segment Time

13:37/mi

Pace

0.90 mi

Distance

Overall

5043

Women

2045

Division

266

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF20-29Seg. OverallSeg. FemalesSeg. F20-29
2M2.00 mi2.00 mi2534736894701(Top 71%)1875(Top 64%)249(Top 71%)
4M4.00 mi2.00 mi3387-8531119-383150-614146(Top 63%)1478(Top 50%)197(Top 56%)
6M6.00 mi2.00 mi4060-6731423-304194-445173(Top 79%)2039(Top 70%)272(Top 77%)
8M8.00 mi2.00 mi4144-841456-33191+34427(Top 67%)1605(Top 55%)201(Top 57%)
9.6M9.60 mi1.60 mi4533-3891690-234224-335726(Top 87%)2446(Top 83%)302(Top 86%)
10M10.00 mi0.40 mi4626-931746-56236-125371(Top 82%)2246(Top 77%)291(Top 82%)
10.5M10.50 mi0.50 mi4602+241732+14234+23847(Top 59%)1374(Top 47%)184(Top 52%)
12M12.00 mi1.50 mi4648-461767-35237-34701(Top 71%)1875(Top 64%)249(Top 71%)
Finish13.11 mi1.11 mi4602+461753+142374557(Top 69%)1813(Top 62%)235(Top 67%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 71%
~flat
+5ft-3ft

Overall

4701

Females

1875

F20-24

249

2M→4M

2.0 - 4.0 mi

Top 63%
×4story building
+67ft-69ft

Overall

4146

Females

1478

F20-24

198

4M→6M

4.0 - 6.0 mi

Top 79%
×9story building
+123ft-9ft

Overall

5173

Females

2039

F20-24

273

6M→8M

6.0 - 8.0 mi

Top 67%
×12story building
+166ft-53ft

Overall

4427

Females

1605

F20-24

201

8M→9.6M

8.0 - 9.6 mi

Top 87%
×13story building
+68ft-193ft

Overall

5726

Females

2446

F20-24

302

9.6M→10M

9.6 - 10.0 mi

Top 82%
×2story building
+0ft-24ft

Overall

5371

Females

2246

F20-24

291

10M→10.5M

10.0 - 10.5 mi

Top 59%
×6story building
+1ft-73ft

Overall

3847

Females

1374

F20-24

184

10.5M→12M

10.5 - 12.0 mi

Top 71%
×21story building
+280ft-26ft

Overall

4701

Females

1875

F20-24

249

12M→Finish

12.0 - 13.1 mi

Top 69%
×7story building
+14ft-89ft

Overall

4557

Females

1813

F20-24

235

Passing Analysis

Category:
Athletes Passed
359*
Passed By
2427
Net Change
-2068
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#2534
2M → 4M20873-853#2534#3387
4M → 6M8681-673#3387#4060
6M → 8M127*211-84#4060#4144
8M → 9.6M5394-389#4144#4533
9.6M → 10M29122-93#4533#4626
10M → 10.5M306+24#4626#4602
10.5M → 12M70*116-46#4602#4648
12M → Finish70*24+46#4648#4602
TOTALS359*2427-2068

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Official Timing Data

The San Francisco Marathon

The San Francisco Marathon

Race Place Events

Race Place Events