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SF MARATHON 1ST HALF 2026

Emma Armstrong

Bib: 12647•F•Age: 29

Castro Valley, CA

0:00
0:00
/ mi
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Overall
#0 / 6575
Top 9%
Gender (Female)
#0 / 2930
Top 3%
Division (F25-29)
#0 / 674
Top 3%
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
8:18/mi
16:37
→ flat
4M
8:12/mi
33:01
↑ 67↓ 69
6M
8:03/mi
49:07
↑ 1231.1%
8M
8:53/mi
1:06:54
↑ 166↓ 531.1%
9.6M
6:22/mi
1:17:06
↑ 68↓ 1931.5%
10M
14:44/mi
1:22:59
↓ 241.1%
10.5M
4:04/mi
1:25:01
↓ 732.7%
12M
11:49/mi
1:42:44
↑ 2803.2%
Finish· 13.11 mi
8:14/mi
1:51:52
↑ 14↓ 891.3%

The Course

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Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time49:07
Pace8:11 /mi
2nd Half
Distance7.11 mi
Time1:02:45
Pace8:50 /mi
📊Positive Split: 27.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi06:49:1816:378:1816:37
8:18
-
4M
4.00 mi07:05:4233:018:1516:24
8:12
-0:06
6M
6.00 mi07:21:4849:078:1116:06
8:03
-0:09
8M
8.00 mi07:39:351:06:548:2217:47
8:53
+0:50
9.6M
9.60 mi07:49:471:17:068:0210:12
6:22
-2:31
10M
10.00 mi07:55:401:22:598:185:53
14:44
+8:22
10.5M
10.50 mi07:57:421:25:018:062:02
4:04
-10:40
12M
12.00 mi08:15:251:42:448:3417:43
11:49
+7:45
Finish
13.11 mi08:24:331:51:528:329:08
8:14
-3:35

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

4:04 /mi

Average Pace

8:32 /mi

Slowest Pace

14:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

12:14

11% of race

Time at Steady Pace

1:16:02

68% of race

Time at Slower Pace

23:36

21% of race

Average Pace: 8:32 /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 mi06:49:1816:378:1816:37
8:18
#735
4M
4.00 mi07:05:4233:018:1516:24
8:12
#642
6M
6.00 mi07:21:4849:078:1116:06
8:03
#586
8M
8.00 mi07:39:351:06:548:2217:47
8:53
#664
9.6M
9.60 mi07:49:471:17:068:0210:12
6:22
#544
10M
10.00 mi07:55:401:22:598:185:53
14:44
#533
10.5M
10.50 mi07:57:421:25:018:062:02
4:04
#536
12M
12.00 mi08:15:251:42:448:3417:43
11:49
#600
Finish
13.11 mi08:24:331:51:528:329:08
8:14
#586
Faster pace
Steady pace
Slower pace
Featured Segment

Garmin Challenge

Top 9%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

7:55

Segment Time

8:48/mi

Pace

0.90 mi

Distance

Overall

581

Women

92

Division

15

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF25-29Seg. OverallSeg. FemalesSeg. F25-29
2M2.00 mi2.00 mi735124261094(Top 17%)247(Top 8%)61(Top 9%)
4M4.00 mi2.00 mi642+93106+1818+8589(Top 9%)94(Top 3%)19(Top 3%)
6M6.00 mi2.00 mi586+5692+1416+2506(Top 8%)81(Top 3%)10(Top 1%)
8M8.00 mi2.00 mi664-78107-1519-31171(Top 18%)234(Top 8%)50(Top 7%)
9.6M9.60 mi1.60 mi544+12087+2016+3300(Top 5%)64(Top 2%)9(Top 1%)
10M10.00 mi0.40 mi533+1185+215+1619(Top 9%)120(Top 4%)15(Top 2%)
10.5M10.50 mi0.50 mi536-38515728(Top 11%)128(Top 4%)26(Top 4%)
12M12.00 mi1.50 mi600-64102-1721-61094(Top 17%)247(Top 8%)61(Top 9%)
Finish13.11 mi1.11 mi586+1495+721800(Top 12%)149(Top 5%)37(Top 5%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 17%
~flat
+5ft-3ft

Overall

1094

Females

247

F25-29

61

2M→4M

2.0 - 4.0 mi

Top 9%
×4story building
+67ft-69ft

Overall

589

Females

94

F25-29

19

4M→6M

4.0 - 6.0 mi

Top 8%
×9story building
+123ft-9ft

Overall

506

Females

81

F25-29

10

6M→8M

6.0 - 8.0 mi

Top 18%
×12story building
+166ft-53ft

Overall

1171

Females

234

F25-29

50

8M→9.6M

8.0 - 9.6 mi

Top 5%
×13story building
+68ft-193ft

Overall

300

Females

64

F25-29

9

9.6M→10M

9.6 - 10.0 mi

Top 9%
×2story building
+0ft-24ft

Overall

619

Females

120

F25-29

15

10M→10.5M

10.0 - 10.5 mi

Top 11%
×6story building
+1ft-73ft

Overall

728

Females

128

F25-29

26

10.5M→12M

10.5 - 12.0 mi

Top 17%
×21story building
+280ft-26ft

Overall

1094

Females

247

F25-29

61

12M→Finish

12.0 - 13.1 mi

Top 12%
×7story building
+14ft-89ft

Overall

800

Females

149

F25-29

37

Passing Analysis

Category:
Athletes Passed
393*
Passed By
244
Net Change
+149
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#735
2M → 4M10916+93#735#642
4M → 6M648+56#642#586
6M → 8M31109-78#586#664
8M → 9.6M13313+120#664#544
9.6M → 10M209+11#544#533
10M → 10.5M25-3#533#536
10.5M → 12M973-64#536#600
12M → Finish25*11+14#600#586
TOTALS393*244+149

* 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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Questions or issues regarding timing data?

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Official Timing Data

The San Francisco Marathon

The San Francisco Marathon

Race Place Events

Race Place Events