San Francisco Marathon logo
SF MARATHON 1ST HALF 2025

William Xuan

Palo Alto, CA

Bib: 16638 M 22

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 7100
Top 19%
Gender (Male)
#0 / 3977
Top 27%
M20-29
#0 / 437
Top 38%
Race Day Weather
56°/46°F
light rain

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
10 ft elev
1.81M
8:36/mi
15:34
→ flat
12 ft elev
5.34M
8:54/mi
47:00
↑ 80↓ 74
19 ft elev
6.15M
9:22/mi
54:35
↑ 1262.8%
149 ft elev
10.54M
8:50/mi
1:33:22
↑ 230↓ 3610.6%
20 ft elev
11.05M
11:05/mi
1:39:01
↑ 1726.4%
213 ft elev
Finish· 13.11 mi
9:13/mi
1:58:00
↑ 97↓ 1140.2%
205 ft elev
Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent

The Course

Half Splits

1st Half· via 6.15M
54:358:53 /mi⚡ faster
2nd Half
1:03:259:07 /mi+16.2%
Positive split — 16.2% 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
1.81M
15:348:361.81 mi15:34
8:36
-
5.34M
47:008:483.53 mi31:26
8:54
+0:18
6.15M
54:358:530.81 mi7:35
9:22
+0:28
10.54M
1:33:228:524.39 mi38:47
8:50
-0:32
11.05M
1:39:018:580.51 mi5:39
11:05
+2:15
Finish(13.11 mi)
1:58:009:002.06 mi18:59
9:13
-1:52
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

8:36 /mi

Average Pace

9:00 /mi

Slowest Pace

11:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

15:34

13% of race

Time at Steady Pace

1:36:47

82% of race

Time at Slower Pace

5:39

5% of race

Average Pace: 9:00 /mi

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

Heatmap

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

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM20-29Seg. OverallSeg. MalesSeg. M20-29
1.81M1.81 mi1304103515113041035151
5.34M3.53 mi1503-1991166-131171-2016751289192
6.15M0.81 mi1530-271182-16173-217681349205
10.54M4.39 mi1404+1261102+80172+113211048166
11.05M0.51 mi1344+601062+40167+5975795149
Finish(13.11 mi)2.06 mi1333+111054+8165+214391100175

Segment Performance Analysis

Start → 1.81M

0.0 - 1.8 mi

Top 18%
~flat
+4ft-3ft

Overall

1304

Males

1035

M20-24

151

1.81M→5.34M

1.8 - 5.3 mi

Top 24%
×4story building
+80ft-74ft

Overall

1675

Males

1289

M20-24

192

5.34M→6.15M

5.3 - 6.2 mi

Top 25%
×10story building
+126ft-4ft

Overall

1768

Males

1349

M20-24

205

6.15M→10.54M

6.2 - 10.5 mi

Top 19%
×21story building
+230ft-361ft

Overall

1321

Males

1048

M20-24

166

10.54M→11.05M

10.5 - 11.1 mi

Top 14%
×14story building
+172ft-0ft

Overall

975

Males

795

M20-24

149

11.05M→Finish

11.1 - 13.1 mi

Top 20%
×7story building
+97ft-114ft

Overall

1439

Males

1100

M20-24

175

Passing Analysis

Category:
Passed
377*
Passed By
406
Net Change
-29
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 1.81M----#1304
1.81M → 5.34M64263-199#1304#1503
5.34M → 6.15M3360-27#1503#1530
6.15M → 10.54M16640+126#1530#1404
10.54M → 11.05M699+60#1404#1344
11.05M → Finish45*34+11#1344#1333
TOTALS377*406-29

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

Passing Charts

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