San Francisco Marathon logo
SF MARATHON 1ST HALF 2023

Billy Marks

Bib: 11435•M•Age: 34

San Francisco, CA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 6072
Top 38%
Gender (Male)
#0 / 3331
Top 47%
Division (M30-34)
#0 / 723
Top 50%
Race Day Weather
60°/50°F
overcast 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
1.40M
8:51/mi
12:23
→ flat
2.13M
19:41/mi
26:45
→ flat
6.43M
11:49/mi
1:17:35
↑ 274↓ 780.9%
6.62M
-36:-46/mi
1:10:47
↑ 161.6%
10.65M
9:57/mi
1:50:54
↑ 153↓ 3611.0%
Finish· 13.11 mi
7:47/mi
2:10:03
↑ 244↓ 1141.0%

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 6.62M
Distance6.62 mi
Time1:10:47
Pace10:42 /mi
2nd Half✓ Faster
Distance6.49 mi
Time59:16
Pace9:08 /mi
📊Negative Split: 16.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
1.40M
1.40 mi06:54:2912:238:5112:23
8:51
-
2.13M
2.13 mi07:08:5126:4512:3314:22
19:41
+10:50
6.43M
6.43 mi07:59:411:17:3512:0450:50
11:49
-7:52
6.62M
6.62 mi07:52:531:10:4710:42
-36:-46
-48:35
10.65M
10.65 mi08:33:001:50:5410:2540:07
9:57
+46:43
Finish
13.11 mi08:52:092:10:039:5519:09
7:47
-2:10

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

-37:-46 /mi

Average Pace

9:55 /mi

Slowest Pace

19:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:10:03

100% of race

Time at Steady Pace

0:00

0% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:55 /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
1.40M
1.40 mi06:54:2912:238:5112:23
8:51
#2117
2.13M
2.13 mi07:08:5126:4512:3314:22
19:41
#2755
6.43M
6.43 mi07:59:411:17:3512:0450:50
11:49
#2808
6.62M
6.62 mi07:52:531:10:4710:42
-36:-46
#2786
10.65M
10.65 mi08:33:001:50:5410:2540:07
9:57
#2807
Finish
13.11 mi08:52:092:10:039:5519:09
7:47
#2328
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM30-34Seg. OverallSeg. MalesSeg. M30-34
1.40M1.40 mi1.40 mi211714403022117(Top 35%)1440(Top 43%)302(Top 42%)
2.13M2.13 mi0.73 mi2755-6381819-379399-973544(Top 58%)2226(Top 67%)502(Top 69%)
6.43M6.43 mi4.30 mi2808-531854-35418-192932(Top 48%)1901(Top 57%)435(Top 60%)
6.62M6.62 mi0.19 mi2786+221830+24411+7---
10.65M10.65 mi4.03 mi2807-211838-8423-122894(Top 48%)1872(Top 56%)436(Top 60%)
Finish13.11 mi2.46 mi2328+4791564+274359+64804(Top 13%)623(Top 19%)141(Top 20%)

Segment Performance Analysis

Start → 1.40M

0.0 - 1.4 mi

Top 35%
~flat
+3ft-2ft

Overall

2117

Males

1440

M30-34

304

1.40M→2.13M

1.4 - 2.1 mi

Top 58%
~flat
+3ft-1ft

Overall

3544

Males

2226

M30-34

505

2.13M→6.43M

2.1 - 6.4 mi

Top 48%
×17story building
+274ft-78ft

Overall

2932

Males

1901

M30-34

437

6.43M→6.62M

6.4 - 6.6 mi

×1story
+16ft-0ft

Overall

-

Males

-

M30-34

-

6.62M→10.65M

6.6 - 10.7 mi

Top 48%
×21story building
+153ft-361ft

Overall

2894

Males

1872

M30-34

438

10.65M→Finish

10.7 - 13.1 mi

Top 13%
×17story building
+244ft-114ft

Overall

804

Males

623

M30-34

141

Passing Analysis

Category:
Athletes Passed
943*
Passed By
1154
Net Change
-211
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 1.40M----#2117
1.40M → 2.13M22660-638#2117#2755
2.13M → 6.43M235*288-53#2755#2808
6.43M → 6.62M7856+22#2808#2786
6.62M → 10.65M129*150-21#2786#2807
10.65M → Finish479*0+479#2807#2328
TOTALS943*1154-211

* 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

Public Race Data

The San Francisco Marathon

The San Francisco Marathon

Race Place Events

Race Place Events