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SF MARATHON 1ST HALF 2026

Kayce Seifert

Boise, ID

Bib: 13003 F 36

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

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
10 ft elev
2M
7:39/mi
15:19
→ flat
12 ft elev
4M
7:52/mi
31:02
↑ 67↓ 69
10 ft elev
6M
7:51/mi
46:44
↑ 1231.1%
126 ft elev
8M
7:40/mi
1:02:03
↑ 166↓ 531.1%
246 ft elev
9.6M
7:40/mi
1:14:19
↑ 68↓ 1931.5%
126 ft elev
10M
14:16/mi
1:20:01
↓ 241.1%
90 ft elev
10.5M
3:58/mi
1:22:00
↓ 732.7%
18 ft elev
12M
11:07/mi
1:38:41
↑ 2803.2%
272 ft elev
Finish· 13.11 mi
7:45/mi
1:47:17
↑ 14↓ 891.3%
205 ft elev
Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent

The Course

Half Splits

1st Half· via 6M
46:447:47 /mi⚡ faster
2nd Half
1:00:338:31 /mi+29.6%
Positive split — 29.6% slower in the second half
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Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
2M
15:197:392.00 mi15:19
7:39
-
4M
31:027:462.00 mi15:43
7:52
+0:13
6M
46:447:472.00 mi15:42
7:51
-0:01
8M
1:02:037:452.00 mi15:19
7:40
-0:11
9.6M
1:14:197:441.60 mi12:16
7:40
0:00
10M
1:20:018:000.40 mi5:42
14:16
+6:36
10.5M
1:22:007:490.50 mi1:59
3:58
-10:18
12M
1:38:418:131.50 mi16:41
11:07
+7:09
Finish(13.11 mi)
1:47:178:111.11 mi8:36
7:45
-3:22
Trend:
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoints & Pacing

Pace Line

Fastest Pace

3:58 /mi

Average Pace

8:11 /mi

Slowest Pace

14:16 /mi

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Fastest
Middle
Slowest
Average

Segments

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

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Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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

CheckpointSeg. DistOverallFemalesF35-39Seg. OverallSeg. FemalesSeg. F35-39
2M2.00 mi32545464812718
4M2.00 mi355-3054-96-2387607
6M2.00 mi362-7547-1385567
8M2.00 mi312+5041+136+1293367
9.6M1.60 mi365-5355-147-1120339149
10M0.40 mi362+354+174669113
10.5M0.50 mi3625475538513
12M1.50 mi395-3362-88-164812718
Finish(13.11 mi)1.11 mi372+2350+128417628

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:
Passed
144*
Passed By
191
Net Change
-47
SegmentPassedPassed 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 Charts

Category:
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Passing Circle

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Position Flow

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Race Lanes

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