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SF MARATHON 1ST HALF 2026

Nikki Calhoun

Bib: 17520•F•Age: 29

alamo, CA

0:00
0:00
/ mi
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Overall
#0 / 6575
Gender (Female)
#0 / 2930
Top 41%
Division (F25-29)
#0 / 674
Top 46%
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
11:47/mi
23:35
→ flat
4M
10:19/mi
44:12
↑ 67↓ 69
6M
10:39/mi
1:05:30
↑ 1231.1%
8M
10:30/mi
1:26:30
↑ 166↓ 531.1%
9.6M
10:30/mi
1:43:18
↑ 68↓ 1931.5%
10M
20:04/mi
1:51:19
↓ 241.1%
10.5M
4:58/mi
1:53:48
↓ 732.7%
12M
14:19/mi
2:15:17
↑ 2803.2%
Finish· 13.11 mi
10:14/mi
2:26:38
↑ 14↓ 891.3%

The Course

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Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time1:05:30
Pace10:55 /mi
2nd Half
Distance7.11 mi
Time1:21:08
Pace11:25 /mi
📊Positive Split: 23.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi07:06:5323:3511:4723:35
11:47
-
4M
4.00 mi07:27:3044:1211:0320:37
10:19
-1:28
6M
6.00 mi07:48:481:05:3010:5521:18
10:39
+0:20
8M
8.00 mi08:09:481:26:3010:4921:00
10:30
-0:09
9.6M
9.60 mi08:26:361:43:1810:4616:48
10:30
0:00
10M
10.00 mi08:34:371:51:1911:088:01
20:04
+9:34
10.5M
10.50 mi08:37:061:53:4810:502:29
4:58
-15:06
12M
12.00 mi08:58:352:15:1711:1621:29
14:19
+9:21
Finish
13.11 mi09:09:562:26:3811:1111:21
10:14
-4:05

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

4:58 /mi

Average Pace

11:11 /mi

Slowest Pace

20:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:29

2% of race

Time at Steady Pace

1:54:39

78% of race

Time at Slower Pace

29:30

20% of race

Average Pace: 11:11 /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 mi07:06:5323:3511:4723:35
11:47
#5688
4M
4.00 mi07:27:3044:1211:0320:37
10:19
#4461
6M
6.00 mi07:48:481:05:3010:5521:18
10:39
#4080
8M
8.00 mi08:09:481:26:3010:4921:00
10:30
#3704
9.6M
9.60 mi08:26:361:43:1810:4616:48
10:30
#3826
10M
10.00 mi08:34:371:51:1911:088:01
20:04
#3772
10.5M
10.50 mi08:37:061:53:4810:502:29
4:58
#3749
12M
12.00 mi08:58:352:15:1711:1621:29
14:19
#3608
Finish
13.11 mi09:09:562:26:3811:1111:21
10:14
#3542
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior
Featured Segment

Garmin Challenge

Top 50%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

10:30

Segment Time

11:40/mi

Pace

0.90 mi

Distance

Overall

3318

Women

1133

Division

289

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF25-29Seg. OverallSeg. FemalesSeg. F25-29
2M2.00 mi2.00 mi568823605643009(Top 46%)1017(Top 35%)270(Top 40%)
4M4.00 mi2.00 mi4461+12271646+714419+1453236(Top 49%)1041(Top 36%)256(Top 38%)
6M6.00 mi2.00 mi4080+3811439+207355+643493(Top 53%)1166(Top 40%)293(Top 43%)
8M8.00 mi2.00 mi3704+3761253+186310+452984(Top 45%)907(Top 31%)216(Top 32%)
9.6M9.60 mi1.60 mi3826-1221329-76339-294557(Top 69%)1843(Top 63%)451(Top 67%)
10M10.00 mi0.40 mi3772+541307+22335+43510(Top 53%)1245(Top 42%)311(Top 46%)
10.5M10.50 mi0.50 mi3749+231294+13330+53095(Top 47%)1029(Top 35%)256(Top 38%)
12M12.00 mi1.50 mi3608+1411230+64312+183009(Top 46%)1017(Top 35%)270(Top 40%)
Finish13.11 mi1.11 mi3542+661206+24310+23167(Top 48%)1098(Top 37%)291(Top 43%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 46%
~flat
+5ft-3ft

Overall

3009

Females

1017

F25-29

270

2M→4M

2.0 - 4.0 mi

Top 49%
×4story building
+67ft-69ft

Overall

3236

Females

1041

F25-29

256

4M→6M

4.0 - 6.0 mi

Top 53%
×9story building
+123ft-9ft

Overall

3493

Females

1166

F25-29

293

6M→8M

6.0 - 8.0 mi

Top 45%
×12story building
+166ft-53ft

Overall

2984

Females

907

F25-29

216

8M→9.6M

8.0 - 9.6 mi

Top 69%
×13story building
+68ft-193ft

Overall

4557

Females

1843

F25-29

451

9.6M→10M

9.6 - 10.0 mi

Top 53%
×2story building
+0ft-24ft

Overall

3510

Females

1245

F25-29

311

10M→10.5M

10.0 - 10.5 mi

Top 47%
×6story building
+1ft-73ft

Overall

3095

Females

1029

F25-29

256

10.5M→12M

10.5 - 12.0 mi

Top 46%
×21story building
+280ft-26ft

Overall

3009

Females

1017

F25-29

270

12M→Finish

12.0 - 13.1 mi

Top 48%
×7story building
+14ft-89ft

Overall

3167

Females

1098

F25-29

291

Passing Analysis

Category:
Athletes Passed
2417*
Passed By
271
Net Change
+2146
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#5688
2M → 4M1230*3+1227#5688#4461
4M → 6M393*12+381#4461#4080
6M → 8M395*19+376#4080#3704
8M → 9.6M52174-122#3704#3826
9.6M → 10M7117+54#3826#3772
10M → 10.5M230+23#3772#3749
10.5M → 12M172*31+141#3749#3608
12M → Finish81*15+66#3608#3542
TOTALS2417*271+2146

* 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