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SF MARATHON 1ST HALF 2026

Nathaniel Chou

Bib: 15411•M•Age: 31

Fremont, CA

0:00
0:00
/ mi
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Overall
#0 / 6575
Top 45%
Gender (Male)
#0 / 3619
Division (M30-34)
#0 / 772
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
9:34/mi
19:09
→ flat
4M
9:47/mi
38:42
↑ 67↓ 69
6M
10:18/mi
59:19
↑ 1231.1%
8M
10:14/mi
1:19:47
↑ 166↓ 531.1%
9.6M
10:14/mi
1:36:10
↑ 68↓ 1931.5%
10M
19:01/mi
1:43:46
↓ 241.1%
10.5M
4:46/mi
1:46:09
↓ 732.7%
12M
14:57/mi
2:08:34
↑ 2803.2%
Finish· 13.11 mi
10:09/mi
2:19:50
↑ 14↓ 891.3%

The Course

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Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time59:19
Pace9:53 /mi
2nd Half
Distance7.11 mi
Time1:20:31
Pace11:20 /mi
📊Positive Split: 35.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi07:00:0119:099:3419:09
9:34
-
4M
4.00 mi07:19:3438:429:4119:33
9:47
+0:13
6M
6.00 mi07:40:1159:199:5320:37
10:18
+0:31
8M
8.00 mi08:00:391:19:479:5820:28
10:14
-0:04
9.6M
9.60 mi08:17:021:36:1010:0116:23
10:14
0:00
10M
10.00 mi08:24:381:43:4610:237:36
19:01
+8:47
10.5M
10.50 mi08:27:011:46:0910:072:23
4:46
-14:15
12M
12.00 mi08:49:262:08:3410:4322:25
14:57
+10:11
Finish
13.11 mi09:00:422:19:5010:4011:16
10:09
-4:48

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

4:46 /mi

Average Pace

10:40 /mi

Slowest Pace

19:01 /mi

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Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:23

2% of race

Time at Steady Pace

1:47:26

77% of race

Time at Slower Pace

30:01

21% of race

Average Pace: 10:40 /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 mi07:00:0119:099:3419:09
9:34
#2385
4M
4.00 mi07:19:3438:429:4119:33
9:47
#2408
6M
6.00 mi07:40:1159:199:5320:37
10:18
#2599
8M
8.00 mi08:00:391:19:479:5820:28
10:14
#2619
9.6M
9.60 mi08:17:021:36:1010:0116:23
10:14
#2848
10M
10.00 mi08:24:381:43:4610:237:36
19:01
#2839
10.5M
10.50 mi08:27:011:46:0910:072:23
4:46
#2825
12M
12.00 mi08:49:262:08:3410:4322:25
14:57
#2944
Finish
13.11 mi09:00:422:19:5010:4011:16
10:09
#2928
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior
Featured Segment

Garmin Challenge

Top 43%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

9:59

Segment Time

11:06/mi

Pace

0.90 mi

Distance

Overall

2808

Men

1892

Division

421

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM30-34Seg. OverallSeg. MalesSeg. M30-34
2M2.00 mi2.00 mi238516953713501(Top 53%)2217(Top 61%)484(Top 63%)
4M4.00 mi2.00 mi2408-231713-18369+22501(Top 38%)1765(Top 49%)377(Top 49%)
6M6.00 mi2.00 mi2599-1911828-115384-153046(Top 46%)2085(Top 58%)437(Top 57%)
8M8.00 mi2.00 mi2619-201850-22390-62670(Top 41%)1899(Top 52%)411(Top 53%)
9.6M9.60 mi1.60 mi2848-2291959-109412-224297(Top 65%)2575(Top 71%)557(Top 72%)
10M10.00 mi0.40 mi2839+91956+3413-12970(Top 45%)1983(Top 55%)432(Top 56%)
10.5M10.50 mi0.50 mi2825+141943+13409+42546(Top 39%)1749(Top 48%)382(Top 49%)
12M12.00 mi1.50 mi2944-1192004-61427-183501(Top 53%)2217(Top 61%)484(Top 63%)
Finish13.11 mi1.11 mi2928+161992+12425+23061(Top 47%)1997(Top 55%)449(Top 58%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 53%
~flat
+5ft-3ft

Overall

3501

Males

2217

M30-34

485

2M→4M

2.0 - 4.0 mi

Top 38%
×4story building
+67ft-69ft

Overall

2501

Males

1765

M30-34

379

4M→6M

4.0 - 6.0 mi

Top 46%
×9story building
+123ft-9ft

Overall

3046

Males

2085

M30-34

439

6M→8M

6.0 - 8.0 mi

Top 41%
×12story building
+166ft-53ft

Overall

2670

Males

1899

M30-34

413

8M→9.6M

8.0 - 9.6 mi

Top 65%
×13story building
+68ft-193ft

Overall

4297

Males

2575

M30-34

559

9.6M→10M

9.6 - 10.0 mi

Top 45%
×2story building
+0ft-24ft

Overall

2970

Males

1983

M30-34

433

10M→10.5M

10.0 - 10.5 mi

Top 39%
×6story building
+1ft-73ft

Overall

2546

Males

1749

M30-34

384

10.5M→12M

10.5 - 12.0 mi

Top 53%
×21story building
+280ft-26ft

Overall

3501

Males

2217

M30-34

485

12M→Finish

12.0 - 13.1 mi

Top 47%
×7story building
+14ft-89ft

Overall

3061

Males

1997

M30-34

449

Passing Analysis

Category:
Athletes Passed
435*
Passed By
978
Net Change
-543
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#2385
2M → 4M113136-23#2385#2408
4M → 6M38229-191#2408#2599
6M → 8M123*143-20#2599#2619
8M → 9.6M12241-229#2619#2848
9.6M → 10M4132+9#2848#2839
10M → 10.5M184+14#2839#2825
10.5M → 12M39158-119#2825#2944
12M → Finish51*35+16#2944#2928
TOTALS435*978-543

* 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