San Francisco Marathon logo
SF MARATHON 1ST HALF 2023

Bre Retherford

Bib: 16784•F•Age: 24

Spring Grove, IL

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 6072
Gender (Female)
#0 / 2732
Top 40%
F20-29
#0 / 376
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
9:46/mi
13:40
→ flat
2.13M
20:01/mi
28:17
→ flat
6.43M
12:40/mi
1:22:47
↑ 274↓ 780.9%
6.62M
-37:-59/mi
1:15:45
↑ 161.6%
10.65M
10:05/mi
1:56:25
↑ 153↓ 3611.0%
Finish· 13.11 mi
8:26/mi
2:17:08
↑ 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
Time1:15:45
Pace11:27 /mi
2nd Half✓ Faster
Distance6.49 mi
Time1:01:23
Pace9:28 /mi
📊Negative Split: 19.0% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
1.40M
1.40 mi07:08:0813:409:4613:40
9:46
-
2.13M
2.13 mi07:22:4528:1713:1714:37
20:01
+10:15
6.43M
6.43 mi08:17:151:22:4712:5254:30
12:40
-7:21
6.62M
6.62 mi08:10:131:15:4511:27
-37:-59
-50:39
10.65M
10.65 mi08:50:531:56:2510:5640:40
10:05
+48:04
Finish
13.11 mi09:11:362:17:0810:2820:43
8:26
-1:39

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

-38:-59 /mi

Average Pace

10:28 /mi

Slowest Pace

20:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:17:08

100% of race

Time at Steady Pace

0:00

0% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 10:28 /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 mi07:08:0813:409:4613:40
9:46
#3677
2.13M
2.13 mi07:22:4528:1713:1714:37
20:01
#3645
6.43M
6.43 mi08:17:151:22:4712:5254:30
12:40
#3700
6.62M
6.62 mi08:10:131:15:4511:27
-37:-59
#3749
10.65M
10.65 mi08:50:531:56:2510:5640:40
10:05
#3480
Finish
13.11 mi09:11:362:17:0810:2820:43
8:26
#3071
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF20-29Seg. OverallSeg. FemalesSeg. F20-29
1.40M1.40 mi1.40 mi367713822333677(Top 61%)1382(Top 51%)233(Top 62%)
2.13M2.13 mi0.73 mi3645+321366+16238-53812(Top 63%)1458(Top 53%)251(Top 67%)
6.43M6.43 mi4.30 mi3700-551393-27237+13807(Top 63%)1447(Top 53%)241(Top 64%)
6.62M6.62 mi0.19 mi3749-491413-20236+1---
10.65M10.65 mi4.03 mi3480+2691286+127219+173092(Top 51%)1113(Top 41%)200(Top 53%)
Finish13.11 mi2.46 mi3071+4091097+189201+181453(Top 24%)406(Top 15%)77(Top 20%)

Segment Performance Analysis

Start → 1.40M

0.0 - 1.4 mi

Top 61%
~flat
+3ft-2ft

Overall

3677

Females

1382

F20-24

233

1.40M→2.13M

1.4 - 2.1 mi

Top 63%
~flat
+3ft-1ft

Overall

3812

Females

1458

F20-24

251

2.13M→6.43M

2.1 - 6.4 mi

Top 63%
×17story building
+274ft-78ft

Overall

3807

Females

1447

F20-24

241

6.43M→6.62M

6.4 - 6.6 mi

×1story
+16ft-0ft

Overall

-

Females

-

F20-24

-

6.62M→10.65M

6.6 - 10.7 mi

Top 51%
×21story building
+153ft-361ft

Overall

3092

Females

1113

F20-24

200

10.65M→Finish

10.7 - 13.1 mi

Top 24%
×17story building
+244ft-114ft

Overall

1453

Females

406

F20-24

77

Passing Analysis

Category:
Athletes Passed
1224*
Passed By
618
Net Change
+606
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 1.40M----#3677
1.40M → 2.13M218186+32#3677#3645
2.13M → 6.43M247*302-55#3645#3700
6.43M → 6.62M4392-49#3700#3749
6.62M → 10.65M306*37+269#3749#3480
10.65M → Finish410*1+409#3480#3071
TOTALS1224*618+606

* 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