San Francisco Marathon logo
SF MARATHON 1ST HALF 2026

Calvin Shiu

San Bruno, CA

Bib: 15507 M 37

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 6575
Top 19%
Gender (Male)
#0 / 3619
Top 27%
Division (M35-39)
#0 / 582
Top 29%
Race Day Weather
59°/49°F
scattered clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
2M
8:20/mi
16:40
→ flat
4M
8:26/mi
33:32
↑ 67↓ 69
6M
8:29/mi
50:31
↑ 123
8M
8:37/mi
1:07:46
↑ 166↓ 53
9.6M
8:37/mi
1:21:34
↑ 68↓ 193
10.26M
10:08/mi
1:28:15
↓ 114
10.5M
9:44/mi
1:30:35
→ flat
12M
13:11/mi
1:50:21
↑ 280
Finish· 13.11 mi
9:11/mi
2:00:32
↑ 14↓ 89
Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent

The Course

Half Splits

1st Half· via 6M
50:318:25 /mi⚡ faster
2nd Half
1:10:019:51 /mi+38.6%
Positive split — 38.6% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
2M
16:408:202.00 mi16:40
8:20
-
4M
33:328:232.00 mi16:52
8:26
+0:06
6M
50:318:252.00 mi16:59
8:29
+0:03
8M
1:07:468:282.00 mi17:15
8:37
+0:08
9.6M
1:21:348:301.60 mi13:48
8:37
0:00
10.26M
1:28:158:360.66 mi6:41
10:08
+1:31
10.5M
1:30:358:380.24 mi2:20
9:44
-0:24
12M
1:50:219:121.50 mi19:46
13:11
+3:27
Finish(13.11 mi)
2:00:329:121.11 mi10:11
9:11
-4:00
Trend:
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoints & Pacing

Pace Line

Fastest Pace

8:20 /mi

Average Pace

9:12 /mi

Slowest Pace

13:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

1:31:45

76% of race

Time at Slower Pace

28:47

24% of race

Average Pace: 9:12 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

Loading...
0mi3.3mi6.6mi9.8mi13.1mi
Pace:
Faster
Steady
Slower
Featured Segment

Garmin Challenge

Top 26%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

9:01

Segment Time

10:01/mi

Pace

0.90 mi

Distance

Overall

1718

Men

1274

Division

213

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM35-39Seg. OverallSeg. MalesSeg. M35-39
2M2.00 mi76363211220731462246
4M2.00 mi761+2628+4110+2796649116
6M2.00 mi779-18636-8116-6849691129
8M2.00 mi763+16632+4119-3941779135
9.6M1.60 mi930-167754-122140-2122731485245
10.26M0.66 mi958-28776-22142-216361210201
10.5M0.24 mi971-13785-9143-122641592269
12M1.50 mi1190-219945-160169-2620731462246
Finish(13.11 mi)1.11 mi1220-30968-23168+118511343214

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 32%
~flat
+5ft-3ft

Overall

2073

Males

1462

M35-39

246

2M→4M

2.0 - 4.0 mi

Top 12%
×4story building
+67ft-69ft

Overall

796

Males

649

M35-39

116

4M→6M

4.0 - 6.0 mi

Top 13%
×9story building
+123ft-9ft

Overall

849

Males

691

M35-39

129

6M→8M

6.0 - 8.0 mi

Top 14%
×12story building
+166ft-53ft

Overall

941

Males

779

M35-39

135

8M→9.6M

8.0 - 9.6 mi

Top 35%
×13story building
+68ft-193ft

Overall

2273

Males

1485

M35-39

245

9.6M→10.26M

9.6 - 10.3 mi

Top 25%
×9story building
+0ft-114ft

Overall

1636

Males

1210

M35-39

201

10.26M→10.5M

10.3 - 10.5 mi

Top 34%
~flat
+1ft-0ft

Overall

2264

Males

1592

M35-39

269

10.5M→12M

10.5 - 12.0 mi

Top 32%
×21story building
+280ft-26ft

Overall

2073

Males

1462

M35-39

246

12M→Finish

12.0 - 13.1 mi

Top 28%
×7story building
+14ft-89ft

Overall

1851

Males

1343

M35-39

214

Passing Analysis

Category:
▼Net Change
0
0 passed by0* passed
SegmentMovementRank
Start → 2M-#763
2M → 4M
5759+2
#763 → #761
4M → 6M
5537-18
#761 → #779
6M → 8M
6985+16
#779 → #763
8M → 9.6M
1703-167
#763 → #930
9.6M → 10.26M
357-28
#930 → #958
10.26M → 10.5M
152-13
#958 → #971
10.5M → 12M
23011-219
#971 → #1190
12M → Finish
5525*-30
#1190 → #1220
TOTALS
686229*-457
#763 → #1220

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

Passing Visualized

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