San Francisco Marathon logo
SF MARATHON 1ST HALF 2025

Matthew Ding

Westford, MA

Bib: 17811 M 22

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 7100
Gender (Male)
#0 / 3977
M20-29
#0 / 437
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
11:13/mi
20:19
→ flat
12 ft elev
5.34M
11:03/mi
59:20
↑ 80↓ 74
19 ft elev
6.15M
11:06/mi
1:08:19
↑ 1262.8%
149 ft elev
10.54M
11:02/mi
1:56:44
↑ 230↓ 3610.6%
20 ft elev
11.05M
14:03/mi
2:03:54
↑ 1726.4%
213 ft elev
Finish· 13.11 mi
10:55/mi
2:26:23
↑ 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
1:08:1911:07 /mi⚡ faster
2nd Half
1:18:0411:13 /mi+14.3%
Positive split — 14.3% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
1.81M
1.81 mi07:03:3120:1911:1320:19
11:13
-
5.34M
5.34 mi07:42:3259:2011:0739:01
11:03
-0:10
6.15M
6.15 mi07:51:311:08:1911:078:59
11:06
+0:03
10.54M
10.54 mi08:39:561:56:4411:0548:25
11:02
-0:04
11.05M
11.05 mi08:47:062:03:5411:137:10
14:03
+3:01
Finish
13.11 mi09:09:352:26:2311:1022:29
10:55
-3:08

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

10:55 /mi

Average Pace

11:10 /mi

Slowest Pace

14:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:19:13

95% of race

Time at Slower Pace

7:10

5% of race

Average Pace: 11:10 /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
1.81M
1.81 mi07:03:3120:1911:1320:19
11:13
#5976
5.34M
5.34 mi07:42:3259:2011:0739:01
11:03
#5361
6.15M
6.15 mi07:51:311:08:1911:078:59
11:06
#5182
10.54M
10.54 mi08:39:561:56:4411:0548:25
11:02
#4748
11.05M
11.05 mi08:47:062:03:5411:137:10
14:03
#4625
Finish
13.11 mi09:09:352:26:2311:1022:29
10:55
#4444
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM20-29Seg. OverallSeg. MalesSeg. M20-29
1.81M1.81 mi1.81 mi5976352341659763523416
5.34M5.34 mi3.53 mi5361+6153265+258400+1650883131391
6.15M6.15 mi0.81 mi5182+1793180+85394+642732748370
10.54M10.54 mi4.39 mi4748+4342967+213378+1642892732351
11.05M11.05 mi0.51 mi4625+1232907+60371+732432165290
Finish13.11 mi2.06 mi4444+1812803+104363+837442375319

Segment Performance Analysis

Start → 1.81M

0.0 - 1.8 mi

Top 84%
~flat
+4ft-3ft

Overall

5976

Males

3523

M20-24

416

1.81M→5.34M

1.8 - 5.3 mi

Top 72%
×4story building
+80ft-74ft

Overall

5088

Males

3131

M20-24

391

5.34M→6.15M

5.3 - 6.2 mi

Top 60%
×10story building
+126ft-4ft

Overall

4273

Males

2748

M20-24

370

6.15M→10.54M

6.2 - 10.5 mi

Top 60%
×21story building
+230ft-361ft

Overall

4289

Males

2732

M20-24

351

10.54M→11.05M

10.5 - 11.1 mi

Top 46%
×14story building
+172ft-0ft

Overall

3243

Males

2165

M20-24

290

11.05M→Finish

11.1 - 13.1 mi

Top 53%
×7story building
+97ft-114ft

Overall

3744

Males

2375

M20-24

319

Passing Analysis

Category:
Athletes Passed
1621*
Passed By
89
Net Change
+1532
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 1.81M----#5976
1.81M → 5.34M649*34+615#5976#5361
5.34M → 6.15M1867+179#5361#5182
6.15M → 10.54M457*23+434#5182#4748
10.54M → 11.05M13310+123#4748#4625
11.05M → Finish196*15+181#4625#4444
TOTALS1621*89+1532

* 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