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SF MARATHON 1ST HALF 2026

Kayce Seifert

Bib: 13003•F•Age: 36

Boise, ID

0:00
0:00
/ mi
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Overall
#0 / 6575
Top 6%
Gender (Female)
#0 / 2930
Top 2%
Division (F35-39)
#0 / 388
Top 2%
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
7:39/mi
15:19
→ flat
4M
7:52/mi
31:02
↑ 67↓ 69
6M
7:51/mi
46:44
↑ 1231.1%
8M
7:40/mi
1:02:03
↑ 166↓ 531.1%
9.6M
7:40/mi
1:14:19
↑ 68↓ 1931.5%
10M
14:16/mi
1:20:01
↓ 241.1%
10.5M
3:58/mi
1:22:00
↓ 732.7%
12M
11:07/mi
1:38:41
↑ 2803.2%
Finish· 13.11 mi
7:45/mi
1:47:17
↑ 14↓ 891.3%

The Course

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Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time46:44
Pace7:47 /mi
2nd Half
Distance7.11 mi
Time1:00:33
Pace8:31 /mi
📊Positive Split: 29.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi06:45:5315:197:3915:19
7:39
-
4M
4.00 mi07:01:3631:027:4615:43
7:52
+0:13
6M
6.00 mi07:17:1846:447:4715:42
7:51
-0:01
8M
8.00 mi07:32:371:02:037:4515:19
7:40
-0:11
9.6M
9.60 mi07:44:531:14:197:4412:16
7:40
0:00
10M
10.00 mi07:50:351:20:018:005:42
14:16
+6:36
10.5M
10.50 mi07:52:341:22:007:491:59
3:58
-10:18
12M
12.00 mi08:09:151:38:418:1316:41
11:07
+7:09
Finish
13.11 mi08:17:511:47:178:118:36
7:45
-3:22

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

3:58 /mi

Average Pace

8:11 /mi

Slowest Pace

14:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:59

2% of race

Time at Steady Pace

1:22:55

77% of race

Time at Slower Pace

22:23

21% of race

Average Pace: 8:11 /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 mi06:45:5315:197:3915:19
7:39
#325
4M
4.00 mi07:01:3631:027:4615:43
7:52
#355
6M
6.00 mi07:17:1846:447:4715:42
7:51
#362
8M
8.00 mi07:32:371:02:037:4515:19
7:40
#312
9.6M
9.60 mi07:44:531:14:197:4412:16
7:40
#365
10M
10.00 mi07:50:351:20:018:005:42
14:16
#362
10.5M
10.50 mi07:52:341:22:007:491:59
3:58
#362
12M
12.00 mi08:09:151:38:418:1316:41
11:07
#395
Finish
13.11 mi08:17:511:47:178:118:36
7:45
#372
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior
Featured Segment

Garmin Challenge

Top 7%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

7:41

Segment Time

8:32/mi

Pace

0.90 mi

Distance

Overall

433

Women

65

Division

9

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF35-39Seg. OverallSeg. FemalesSeg. F35-39
2M2.00 mi2.00 mi325454648(Top 10%)127(Top 4%)18(Top 5%)
4M4.00 mi2.00 mi355-3054-96-2387(Top 6%)60(Top 2%)7(Top 2%)
6M6.00 mi2.00 mi362-7547-1385(Top 6%)56(Top 2%)7(Top 2%)
8M8.00 mi2.00 mi312+5041+136+1293(Top 4%)36(Top 1%)7(Top 2%)
9.6M9.60 mi1.60 mi365-5355-147-11203(Top 18%)391(Top 13%)49(Top 13%)
10M10.00 mi0.40 mi362+354+17466(Top 7%)91(Top 3%)13(Top 3%)
10.5M10.50 mi0.50 mi362547553(Top 8%)85(Top 3%)13(Top 3%)
12M12.00 mi1.50 mi395-3362-88-1648(Top 10%)127(Top 4%)18(Top 5%)
Finish13.11 mi1.11 mi372+2350+128417(Top 6%)62(Top 2%)8(Top 2%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 10%
~flat
+5ft-3ft

Overall

648

Females

127

F35-39

18

2M→4M

2.0 - 4.0 mi

Top 6%
×4story building
+67ft-69ft

Overall

387

Females

60

F35-39

7

4M→6M

4.0 - 6.0 mi

Top 6%
×9story building
+123ft-9ft

Overall

385

Females

56

F35-39

7

6M→8M

6.0 - 8.0 mi

Top 4%
×12story building
+166ft-53ft

Overall

293

Females

36

F35-39

7

8M→9.6M

8.0 - 9.6 mi

Top 18%
×13story building
+68ft-193ft

Overall

1203

Females

391

F35-39

49

9.6M→10M

9.6 - 10.0 mi

Top 7%
×2story building
+0ft-24ft

Overall

466

Females

91

F35-39

13

10M→10.5M

10.0 - 10.5 mi

Top 8%
×6story building
+1ft-73ft

Overall

553

Females

85

F35-39

13

10.5M→12M

10.5 - 12.0 mi

Top 10%
×21story building
+280ft-26ft

Overall

648

Females

127

F35-39

18

12M→Finish

12.0 - 13.1 mi

Top 6%
×7story building
+14ft-89ft

Overall

417

Females

62

F35-39

8

Passing Analysis

Category:
Athletes Passed
144*
Passed By
191
Net Change
-47
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#325
2M → 4M1343-30#325#355
4M → 6M1623-7#355#362
6M → 8M6616+50#362#312
8M → 9.6M356-53#312#365
9.6M → 10M107+3#365#362
10M → 10.5M110#362#362
10.5M → 12M639-33#362#395
12M → Finish29*6+23#395#372
TOTALS144*191-47

* 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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Contact Race Support

Official Timing Data

The San Francisco Marathon

The San Francisco Marathon

Race Place Events

Race Place Events