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SF MARATHON 1ST HALF 2026

Siwei Liu

Bib: 19447•M•Age: 33

SF, CA

0:00
0:00
/ mi
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Overall
#0 / 6575
Top 49%
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
8:53/mi
17:46
→ flat
4M
8:38/mi
35:01
↑ 67↓ 69
6M
9:21/mi
53:43
↑ 1231.1%
8M
8:41/mi
1:11:05
↑ 166↓ 531.1%
9.6M
8:41/mi
1:24:59
↑ 68↓ 1931.5%
10M
18:31/mi
1:32:23
↓ 241.1%
10.5M
4:06/mi
1:34:26
↓ 732.7%
12M
19:38/mi
2:03:53
↑ 2803.2%
Finish· 13.11 mi
17:08/mi
2:22:53
↑ 14↓ 891.3%

The Course

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Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time53:43
Pace8:57 /mi
2nd Half
Distance7.11 mi
Time1:29:10
Pace12:33 /mi
📊Positive Split: 66.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi06:55:2217:468:5317:46
8:53
-
4M
4.00 mi07:12:3735:018:4517:15
8:38
-0:15
6M
6.00 mi07:31:1953:438:5718:42
9:21
+0:43
8M
8.00 mi07:48:411:11:058:5317:22
8:41
-0:40
9.6M
9.60 mi08:02:351:24:598:5113:54
8:41
0:00
10M
10.00 mi08:09:591:32:239:147:24
18:31
+9:50
10.5M
10.50 mi08:12:021:34:269:002:03
4:06
-14:25
12M
12.00 mi08:41:292:03:5310:1929:27
19:38
+15:32
Finish
13.11 mi09:00:292:22:5310:5419:00
17:08
-2:30

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

4:06 /mi

Average Pace

10:54 /mi

Slowest Pace

19:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:03

1% of race

Time at Steady Pace

1:24:59

59% of race

Time at Slower Pace

55:51

39% of race

Average Pace: 10:54 /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 mi06:55:2217:468:5317:46
8:53
#1373
4M
4.00 mi07:12:3735:018:4517:15
8:38
#1137
6M
6.00 mi07:31:1953:438:5718:42
9:21
#1386
8M
8.00 mi07:48:411:11:058:5317:22
8:41
#1206
9.6M
9.60 mi08:02:351:24:598:5113:54
8:41
#1389
10M
10.00 mi08:09:591:32:239:147:24
18:31
#1484
10.5M
10.50 mi08:12:021:34:269:002:03
4:06
#1462
12M
12.00 mi08:41:292:03:5310:1929:27
19:38
#2444
Finish
13.11 mi09:00:292:22:5310:5419:00
17:08
#3219
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior
Featured Segment

Garmin Challenge

Top 34%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

9:27

Segment Time

10:30/mi

Pace

0.90 mi

Distance

Overall

2204

Men

1556

Division

340

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM30-34Seg. OverallSeg. MalesSeg. M30-34
2M2.00 mi2.00 mi137310602326064(Top 92%)3387(Top 94%)714(Top 92%)
4M4.00 mi2.00 mi1137+236900+160190+42981(Top 15%)792(Top 22%)168(Top 22%)
6M6.00 mi2.00 mi1386-2491085-185242-521860(Top 28%)1390(Top 38%)310(Top 40%)
8M8.00 mi2.00 mi1206+180973+112211+31987(Top 15%)813(Top 22%)173(Top 22%)
9.6M9.60 mi1.60 mi1389-1831090-117242-312345(Top 36%)1523(Top 42%)330(Top 43%)
10M10.00 mi0.40 mi1484-951151-61259-172713(Top 41%)1832(Top 51%)403(Top 52%)
10.5M10.50 mi0.50 mi1462+221137+14254+5853(Top 13%)688(Top 19%)156(Top 20%)
12M12.00 mi1.50 mi2444-9821717-580363-1096064(Top 92%)3387(Top 94%)714(Top 92%)
Finish13.11 mi1.11 mi3219-7752154-437457-946450(Top 98%)3559(Top 98%)763(Top 99%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 92%
~flat
+5ft-3ft

Overall

6064

Males

3387

M30-34

716

2M→4M

2.0 - 4.0 mi

Top 15%
×4story building
+67ft-69ft

Overall

981

Males

792

M30-34

169

4M→6M

4.0 - 6.0 mi

Top 28%
×9story building
+123ft-9ft

Overall

1860

Males

1390

M30-34

311

6M→8M

6.0 - 8.0 mi

Top 15%
×12story building
+166ft-53ft

Overall

987

Males

813

M30-34

174

8M→9.6M

8.0 - 9.6 mi

Top 36%
×13story building
+68ft-193ft

Overall

2345

Males

1523

M30-34

331

9.6M→10M

9.6 - 10.0 mi

Top 41%
×2story building
+0ft-24ft

Overall

2713

Males

1832

M30-34

404

10M→10.5M

10.0 - 10.5 mi

Top 13%
×6story building
+1ft-73ft

Overall

853

Males

688

M30-34

157

10.5M→12M

10.5 - 12.0 mi

Top 92%
×21story building
+280ft-26ft

Overall

6064

Males

3387

M30-34

716

12M→Finish

12.0 - 13.1 mi

Top 98%
×7story building
+14ft-89ft

Overall

6450

Males

3559

M30-34

763

Passing Analysis

Category:
Athletes Passed
540*
Passed By
2386
Net Change
-1846
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#1373
2M → 4M25317+236#1373#1137
4M → 6M16265-249#1137#1386
6M → 8M21030+180#1386#1206
8M → 9.6M14197-183#1206#1389
9.6M → 10M6101-95#1389#1484
10M → 10.5M231+22#1484#1462
10.5M → 12M2984-982#1462#2444
12M → Finish16*791-775#2444#3219
TOTALS540*2386-1846

* 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