San Francisco Marathon logo
SF MARATHON 1ST HALF 2026

Jason Shangkuan

Bib: 17464•M•Age: 41

Saratoga, CA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 6575
Top 27%
Gender (Male)
#0 / 3619
Top 36%
Masters (Masters Men)
#0 / 1030
Top 26%
Division (M40-44)
#0 / 319
Top 31%
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
9:13/mi
18:26
→ flat
4M
9:37/mi
37:39
↑ 67↓ 69
6M
9:13/mi
56:06
↑ 1231.1%
8M
8:42/mi
1:13:30
↑ 166↓ 531.1%
9.6M
8:42/mi
1:27:26
↑ 68↓ 1931.5%
10M
16:29/mi
1:34:01
↓ 241.1%
10.5M
4:32/mi
1:36:17
↓ 732.7%
12M
13:31/mi
1:56:33
↑ 2803.2%
Finish· 13.11 mi
9:23/mi
2:06:57
↑ 14↓ 891.3%

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time56:06
Pace9:21 /mi
2nd Half
Distance7.11 mi
Time1:10:51
Pace9:58 /mi
📊Positive Split: 26.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi07:01:4018:269:1318:26
9:13
-
4M
4.00 mi07:20:5337:399:2519:13
9:37
+0:24
6M
6.00 mi07:39:2056:069:2118:27
9:13
-0:24
8M
8.00 mi07:56:441:13:309:1117:24
8:42
-0:31
9.6M
9.60 mi08:10:401:27:269:0613:56
8:42
0:00
10M
10.00 mi08:17:151:34:019:246:35
16:29
+7:47
10.5M
10.50 mi08:19:311:36:179:102:16
4:32
-11:57
12M
12.00 mi08:39:471:56:339:4320:16
13:31
+8:59
Finish
13.11 mi08:50:112:06:579:4110:24
9:23
-4:08

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

9:41 /mi

Slowest Pace

16:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:16

2% of race

Time at Steady Pace

1:37:50

77% of race

Time at Slower Pace

26:51

21% of race

Average Pace: 9:41 /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 mi07:01:4018:269:1318:26
9:13
#1820
4M
4.00 mi07:20:5337:399:2519:13
9:37
#2030
6M
6.00 mi07:39:2056:069:2118:27
9:13
#1907
8M
8.00 mi07:56:441:13:309:1117:24
8:42
#1564
9.6M
9.60 mi08:10:401:27:269:0613:56
8:42
#1676
10M
10.00 mi08:17:151:34:019:246:35
16:29
#1653
10.5M
10.50 mi08:19:311:36:179:102:16
4:32
#1658
12M
12.00 mi08:39:471:56:339:4320:16
13:31
#1745
Finish
13.11 mi08:50:112:06:579:4110:24
9:23
#1760
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior
Featured Segment

Garmin Challenge

Top 23%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

8:51

Segment Time

9:50/mi

Pace

0.90 mi

Distance

Overall

1542

Men

1166

Division

83

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
2M2.00 mi2.00 mi182013541052342(Top 36%)1623(Top 45%)125(Top 39%)
4M4.00 mi2.00 mi2030-2101490-136124-192265(Top 34%)1636(Top 45%)140(Top 44%)
6M6.00 mi2.00 mi1907+1231421+69109+151710(Top 26%)1291(Top 36%)96(Top 30%)
8M8.00 mi2.00 mi1564+3431211+21095+141007(Top 15%)826(Top 23%)68(Top 21%)
9.6M9.60 mi1.60 mi1676-1121268-57101-62371(Top 36%)1536(Top 42%)118(Top 37%)
10M10.00 mi0.40 mi1653+231253+1597+41517(Top 23%)1137(Top 31%)81(Top 25%)
10.5M10.50 mi0.50 mi1658-51257-4971903(Top 29%)1395(Top 39%)107(Top 34%)
12M12.00 mi1.50 mi1745-871303-4699-22342(Top 36%)1623(Top 45%)125(Top 39%)
Finish13.11 mi1.11 mi1760-151312-9100-12099(Top 32%)1495(Top 41%)123(Top 39%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 36%
~flat
+5ft-3ft

Overall

2342

Males

1623

M40-44

125

2M→4M

2.0 - 4.0 mi

Top 34%
×4story building
+67ft-69ft

Overall

2265

Males

1636

M40-44

140

4M→6M

4.0 - 6.0 mi

Top 26%
×9story building
+123ft-9ft

Overall

1710

Males

1291

M40-44

96

6M→8M

6.0 - 8.0 mi

Top 15%
×12story building
+166ft-53ft

Overall

1007

Males

826

M40-44

68

8M→9.6M

8.0 - 9.6 mi

Top 36%
×13story building
+68ft-193ft

Overall

2371

Males

1536

M40-44

118

9.6M→10M

9.6 - 10.0 mi

Top 23%
×2story building
+0ft-24ft

Overall

1517

Males

1137

M40-44

81

10M→10.5M

10.0 - 10.5 mi

Top 29%
×6story building
+1ft-73ft

Overall

1903

Males

1395

M40-44

107

10.5M→12M

10.5 - 12.0 mi

Top 36%
×21story building
+280ft-26ft

Overall

2342

Males

1623

M40-44

125

12M→Finish

12.0 - 13.1 mi

Top 32%
×7story building
+14ft-89ft

Overall

2099

Males

1495

M40-44

123

Passing Analysis

Category:
Athletes Passed
668*
Passed By
608
Net Change
+60
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#1820
2M → 4M37247-210#1820#2030
4M → 6M14017+123#2030#1907
6M → 8M352*9+343#1907#1564
8M → 9.6M41153-112#1564#1676
9.6M → 10M3411+23#1676#1653
10M → 10.5M38-5#1653#1658
10.5M → 12M31118-87#1658#1745
12M → Finish30*45-15#1745#1760
TOTALS668*608+60

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Official Timing Data

The San Francisco Marathon

The San Francisco Marathon

Race Place Events

Race Place Events