San Francisco Marathon logo
SF MARATHON 1ST HALF 2023

Ivan Demmon

Bib: 13503•M•Age: 24

Watsonville, CA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 6072
Gender (Male)
#0 / 3331
M20-29
#0 / 333
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
15:14/mi
21:20
→ flat
2.13M
19:41/mi
35:42
→ flat
6.43M
12:20/mi
1:28:45
↑ 274↓ 780.9%
6.62M
-33:-36/mi
1:22:33
↑ 161.6%
10.65M
9:38/mi
2:01:21
↑ 153↓ 3611.0%
Finish· 13.11 mi
8:52/mi
2:23:08
↑ 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
Time1:22:33
Pace12:28 /mi
2nd Half✓ Faster
Distance6.49 mi
Time1:00:35
Pace9:20 /mi
📊Negative Split: 26.6% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
1.40M
1.40 mi07:06:4521:2015:1421:20
15:14
-
2.13M
2.13 mi07:21:0735:4216:4614:22
19:41
+4:27
6.43M
6.43 mi08:14:101:28:4513:4853:03
12:20
-7:21
6.62M
6.62 mi08:07:581:22:3312:28
-33:-36
-45:56
10.65M
10.65 mi08:46:462:01:2111:2438:48
9:38
+43:14
Finish
13.11 mi09:08:332:23:0810:5521:47
8:52
-0:46

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

-34:-36 /mi

Average Pace

10:55 /mi

Slowest Pace

19:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:23:08

100% of race

Time at Steady Pace

0:00

0% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 10:55 /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 mi07:06:4521:2015:1421:20
15:14
#5913
2.13M
2.13 mi07:21:0735:4216:4614:22
19:41
#5708
6.43M
6.43 mi08:14:101:28:4513:4853:03
12:20
#4608
6.62M
6.62 mi08:07:581:22:3312:28
-33:-36
#4808
10.65M
10.65 mi08:46:462:01:2111:2438:48
9:38
#4030
Finish
13.11 mi09:08:332:23:0810:5521:47
8:52
#3628
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM20-29Seg. OverallSeg. MalesSeg. M20-29
1.40M1.40 mi1.40 mi591332783315913(Top 97%)3278(Top 98%)331(Top 99%)
2.13M2.13 mi0.73 mi5708+2053217+61328+33557(Top 59%)2232(Top 67%)259(Top 78%)
6.43M6.43 mi4.30 mi4608+11002761+456299+293482(Top 57%)2182(Top 66%)262(Top 79%)
6.62M6.62 mi0.19 mi4808-2002839-78305-6---
10.65M10.65 mi4.03 mi4030+7782472+367280+252497(Top 41%)1652(Top 50%)215(Top 65%)
Finish13.11 mi2.46 mi3628+4022258+214267+131972(Top 32%)1345(Top 40%)183(Top 55%)

Segment Performance Analysis

Start → 1.40M

0.0 - 1.4 mi

Top 97%
~flat
+3ft-2ft

Overall

5913

Males

3278

M20-24

332

1.40M→2.13M

1.4 - 2.1 mi

Top 59%
~flat
+3ft-1ft

Overall

3557

Males

2232

M20-24

259

2.13M→6.43M

2.1 - 6.4 mi

Top 57%
×17story building
+274ft-78ft

Overall

3482

Males

2182

M20-24

262

6.43M→6.62M

6.4 - 6.6 mi

×1story
+16ft-0ft

Overall

-

Males

-

M20-24

-

6.62M→10.65M

6.6 - 10.7 mi

Top 41%
×21story building
+153ft-361ft

Overall

2497

Males

1652

M20-24

215

10.65M→Finish

10.7 - 13.1 mi

Top 32%
×17story building
+244ft-114ft

Overall

1972

Males

1345

M20-24

183

Passing Analysis

Category:
Athletes Passed
2562*
Passed By
277
Net Change
+2285
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 1.40M----#5913
1.40M → 2.13M218*13+205#5913#5708
2.13M → 6.43M1132*32+1100#5708#4608
6.43M → 6.62M28228-200#4608#4808
6.62M → 10.65M781*3+778#4808#4030
10.65M → Finish403*1+402#4030#3628
TOTALS2562*277+2285

* 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