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SF MARATHON 1ST HALF 2026

Isaac Zhu

Bib: 16241•M•Age: 23

Mountain View, CA

0:00
0:00
/ mi
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Overall
#0 / 6575
Gender (Male)
#0 / 3619
M20-29
#0 / 358
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
10:40/mi
21:20
→ flat
4M
10:48/mi
42:55
↑ 67↓ 69
6M
11:21/mi
1:05:38
↑ 1231.1%
8M
11:03/mi
1:27:44
↑ 166↓ 531.1%
9.6M
11:03/mi
1:45:24
↑ 68↓ 1931.5%
10M
20:56/mi
1:53:46
↓ 241.1%
10.5M
5:32/mi
1:56:32
↓ 732.7%
12M
16:17/mi
2:20:58
↑ 2803.2%
Finish· 13.11 mi
10:19/mi
2:32:25
↑ 14↓ 891.3%

The Course

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Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time1:05:38
Pace10:56 /mi
2nd Half
Distance7.11 mi
Time1:26:47
Pace12:12 /mi
📊Positive Split: 32.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi07:01:3121:2010:4021:20
10:40
-
4M
4.00 mi07:23:0642:5510:4421:35
10:48
+0:08
6M
6.00 mi07:45:491:05:3810:5622:43
11:21
+0:33
8M
8.00 mi08:07:551:27:4410:5822:06
11:03
-0:18
9.6M
9.60 mi08:25:351:45:2410:5917:40
11:03
0:00
10M
10.00 mi08:33:571:53:4611:238:22
20:56
+9:53
10.5M
10.50 mi08:36:431:56:3211:062:46
5:32
-15:24
12M
12.00 mi09:01:092:20:5811:4524:26
16:17
+10:45
Finish
13.11 mi09:12:362:32:2511:3811:27
10:19
-5:58

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

5:32 /mi

Average Pace

11:38 /mi

Slowest Pace

20:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:46

2% of race

Time at Steady Pace

1:56:51

77% of race

Time at Slower Pace

32:48

22% of race

Average Pace: 11:38 /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 mi07:01:3121:2010:4021:20
10:40
#4183
4M
4.00 mi07:23:0642:5510:4421:35
10:48
#4042
6M
6.00 mi07:45:491:05:3810:5622:43
11:21
#4115
8M
8.00 mi08:07:551:27:4410:5822:06
11:03
#3912
9.6M
9.60 mi08:25:351:45:2410:5917:40
11:03
#4123
10M
10.00 mi08:33:571:53:4611:238:22
20:56
#4078
10.5M
10.50 mi08:36:431:56:3211:062:46
5:32
#4086
12M
12.00 mi09:01:092:20:5811:4524:26
16:17
#4174
Finish
13.11 mi09:12:362:32:2511:3811:27
10:19
#4063
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior
Featured Segment

Garmin Challenge

Top 61%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

11:08

Segment Time

12:22/mi

Pace

0.90 mi

Distance

Overall

4034

Men

2524

Division

264

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM20-29Seg. OverallSeg. MalesSeg. M20-29
2M2.00 mi2.00 mi418326722954430(Top 67%)2680(Top 74%)284(Top 79%)
4M4.00 mi2.00 mi4042+1412606+66297-23956(Top 60%)2560(Top 71%)293(Top 82%)
6M6.00 mi2.00 mi4115-732640-342974320(Top 66%)2727(Top 75%)305(Top 85%)
8M8.00 mi2.00 mi3912+2032548+92287+103585(Top 55%)2366(Top 65%)261(Top 73%)
9.6M9.60 mi1.60 mi4123-2112636-88299-125079(Top 77%)2947(Top 81%)315(Top 88%)
10M10.00 mi0.40 mi4078+452606+30291+84013(Top 61%)2503(Top 69%)259(Top 72%)
10.5M10.50 mi0.50 mi4086-826062914467(Top 68%)2742(Top 76%)292(Top 82%)
12M12.00 mi1.50 mi4174-882627-21289+24430(Top 67%)2680(Top 74%)284(Top 79%)
Finish13.11 mi1.11 mi4063+1112569+58285+43277(Top 50%)2115(Top 58%)243(Top 68%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 67%
~flat
+5ft-3ft

Overall

4430

Males

2680

M20-24

285

2M→4M

2.0 - 4.0 mi

Top 60%
×4story building
+67ft-69ft

Overall

3956

Males

2560

M20-24

295

4M→6M

4.0 - 6.0 mi

Top 66%
×9story building
+123ft-9ft

Overall

4320

Males

2727

M20-24

308

6M→8M

6.0 - 8.0 mi

Top 55%
×12story building
+166ft-53ft

Overall

3585

Males

2366

M20-24

262

8M→9.6M

8.0 - 9.6 mi

Top 77%
×13story building
+68ft-193ft

Overall

5079

Males

2947

M20-24

316

9.6M→10M

9.6 - 10.0 mi

Top 61%
×2story building
+0ft-24ft

Overall

4013

Males

2503

M20-24

260

10M→10.5M

10.0 - 10.5 mi

Top 68%
×6story building
+1ft-73ft

Overall

4467

Males

2742

M20-24

293

10.5M→12M

10.5 - 12.0 mi

Top 67%
×21story building
+280ft-26ft

Overall

4430

Males

2680

M20-24

285

12M→Finish

12.0 - 13.1 mi

Top 50%
×7story building
+14ft-89ft

Overall

3277

Males

2115

M20-24

243

Passing Analysis

Category:
Athletes Passed
908*
Passed By
788
Net Change
+120
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#4183
2M → 4M250109+141#4183#4042
4M → 6M101*174-73#4042#4115
6M → 8M266*63+203#4115#3912
8M → 9.6M24235-211#3912#4123
9.6M → 10M7025+45#4123#4078
10M → 10.5M1119-8#4078#4086
10.5M → 12M63*151-88#4086#4174
12M → Finish123*12+111#4174#4063
TOTALS908*788+120

* 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