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SF MARATHON 1ST HALF 2026

Alyanna Summerfield

Bib: 16601•F•Age: 38

Concord, CA

0:00
0:00
/ mi
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Overall
#0 / 6575
Top 33%
Gender (Female)
#0 / 2930
Top 21%
Division (F35-39)
#0 / 388
Top 22%
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
10:23/mi
20:47
→ flat
4M
9:57/mi
40:41
↑ 67↓ 69
6M
9:48/mi
1:00:17
↑ 1231.1%
8M
10:55/mi
1:22:07
↑ 166↓ 531.1%
9.6M
7:08/mi
1:33:32
↑ 68↓ 1931.5%
10M
15:44/mi
1:39:49
↓ 241.1%
10.5M
4:32/mi
1:42:05
↓ 732.7%
12M
13:01/mi
2:01:36
↑ 2803.2%
Finish· 13.11 mi
9:08/mi
2:11:44
↑ 14↓ 891.3%

The Course

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Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time1:00:17
Pace10:03 /mi
2nd Half
Distance7.11 mi
Time1:11:27
Pace10:03 /mi
📊Positive Split: 18.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi07:04:3120:4710:2320:47
10:23
-
4M
4.00 mi07:24:2540:4110:1019:54
9:57
-0:26
6M
6.00 mi07:44:011:00:1710:0319:36
9:48
-0:09
8M
8.00 mi08:05:511:22:0710:1621:50
10:55
+1:07
9.6M
9.60 mi08:17:161:33:329:4511:25
7:08
-3:47
10M
10.00 mi08:23:331:39:499:596:17
15:44
+8:36
10.5M
10.50 mi08:25:491:42:059:432:16
4:32
-11:12
12M
12.00 mi08:45:202:01:3610:0819:31
13:01
+8:29
Finish
13.11 mi08:55:282:11:4410:0310:08
9:08
-3:53

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

4:32 /mi

Average Pace

10:03 /mi

Slowest Pace

15:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

13:41

10% of race

Time at Steady Pace

1:32:15

70% of race

Time at Slower Pace

25:48

20% of race

Average Pace: 10:03 /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 mi07:04:3120:4710:2320:47
10:23
#3722
4M
4.00 mi07:24:2540:4110:1019:54
9:57
#3144
6M
6.00 mi07:44:011:00:1710:0319:36
9:48
#2820
8M
8.00 mi08:05:511:22:0710:1621:50
10:55
#3008
9.6M
9.60 mi08:17:161:33:329:4511:25
7:08
#2473
10M
10.00 mi08:23:331:39:499:596:17
15:44
#2342
10.5M
10.50 mi08:25:491:42:059:432:16
4:32
#2323
12M
12.00 mi08:45:202:01:3610:0819:31
13:01
#2247
Finish
13.11 mi08:55:282:11:4410:0310:08
9:08
#2176
Faster pace
Steady pace
Slower pace
Featured Segment

Garmin Challenge

Top 18%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

8:33

Segment Time

9:30/mi

Pace

0.90 mi

Distance

Overall

1205

Women

258

Division

39

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF35-39Seg. OverallSeg. FemalesSeg. F35-39
2M2.00 mi2.00 mi372212741641928(Top 29%)549(Top 19%)68(Top 18%)
4M4.00 mi2.00 mi3144+5781003+271138+262713(Top 41%)823(Top 28%)118(Top 30%)
6M6.00 mi2.00 mi2820+324862+141122+162404(Top 37%)696(Top 24%)98(Top 25%)
8M8.00 mi2.00 mi3008-188917-55131-93445(Top 52%)1137(Top 39%)155(Top 40%)
9.6M9.60 mi1.60 mi2473+535722+195107+24771(Top 12%)217(Top 7%)27(Top 7%)
10M10.00 mi0.40 mi2342+131675+4793+141095(Top 17%)257(Top 9%)37(Top 10%)
10.5M10.50 mi0.50 mi2323+19670+5931923(Top 29%)512(Top 17%)75(Top 19%)
12M12.00 mi1.50 mi2247+76643+2788+51928(Top 29%)549(Top 19%)68(Top 18%)
Finish13.11 mi1.11 mi2176+71615+2884+41801(Top 27%)485(Top 17%)61(Top 16%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 29%
~flat
+5ft-3ft

Overall

1928

Females

549

F35-39

68

2M→4M

2.0 - 4.0 mi

Top 41%
×4story building
+67ft-69ft

Overall

2713

Females

823

F35-39

118

4M→6M

4.0 - 6.0 mi

Top 37%
×9story building
+123ft-9ft

Overall

2404

Females

696

F35-39

98

6M→8M

6.0 - 8.0 mi

Top 52%
×12story building
+166ft-53ft

Overall

3445

Females

1137

F35-39

155

8M→9.6M

8.0 - 9.6 mi

Top 12%
×13story building
+68ft-193ft

Overall

771

Females

217

F35-39

27

9.6M→10M

9.6 - 10.0 mi

Top 17%
×2story building
+0ft-24ft

Overall

1095

Females

257

F35-39

37

10M→10.5M

10.0 - 10.5 mi

Top 29%
×6story building
+1ft-73ft

Overall

1923

Females

512

F35-39

75

10.5M→12M

10.5 - 12.0 mi

Top 29%
×21story building
+280ft-26ft

Overall

1928

Females

549

F35-39

68

12M→Finish

12.0 - 13.1 mi

Top 27%
×7story building
+14ft-89ft

Overall

1801

Females

485

F35-39

61

Passing Analysis

Category:
Athletes Passed
1898*
Passed By
352
Net Change
+1546
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#3722
2M → 4M60022+578#3722#3144
4M → 6M33713+324#3144#2820
6M → 8M72*260-188#2820#3008
8M → 9.6M5394+535#3008#2473
9.6M → 10M1321+131#2473#2342
10M → 10.5M201+19#2342#2323
10.5M → 12M12044+76#2323#2247
12M → Finish78*7+71#2247#2176
TOTALS1898*352+1546

* 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