Brittany Knowles

Bib: 21174FAge: 36

Belmont, CA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 3608
Top 46%
Gender (Female)
#0 / 1646
Top 33%
Division (F35-39)
#0 / 198
Top 33%
Race Day Weather
56°/46°F
overcast clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
1.2M
12:09
Rank: #1593
Start1.2M
10:08/mi
12:09 split
4.9M
45:28
Rank: #1524 (+69)
1.2M4.9M
9:00/mi
33:19 split
11.9M
1:54:36
Rank: #1585 (-61)
4.9M11.9M
9:53/mi
1:09:08 split
Finish· 13.11 mi
2:08:05
Rank: #1653 (-68)
11.9MFinish
11:09/mi
13:29 split

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.

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
1.2M
1.20 mi08:45:0912:0910:0812:09
10:08
-
4.9M
4.90 mi09:18:2845:289:1733:19
9:00
-1:08
11.9M
11.90 mi10:27:361:54:369:381:09:08
9:53
+0:53
Finish
13.11 mi10:41:052:08:059:4613:29
11:09
+1:16

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

9:00 /mi

Average Pace

9:46 /mi

Slowest Pace

11:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

33:19

26% of race

Time at Steady Pace

1:21:17

63% of race

Time at Slower Pace

13:29

11% of race

Average Pace: 9:46 /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
1.2M
1.20 mi08:45:0912:0910:0812:09
10:08
#1593
4.9M
4.90 mi09:18:2845:289:1733:19
9:00
#1524
11.9M
11.90 mi10:27:361:54:369:381:09:08
9:53
#1585
Finish
13.11 mi10:41:052:08:059:4613:29
11:09
#1653
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF35-39Seg. OverallSeg. FemalesSeg. F35-39
1.2M1.20 mi1.20 mi1593519581593(Top 44%)519(Top 32%)58(Top 29%)
4.9M4.90 mi3.70 mi1524+69475+4457+11516(Top 42%)474(Top 29%)57(Top 29%)
11.9M11.90 mi7.00 mi1585-61507-3258-11660(Top 46%)561(Top 34%)64(Top 32%)
Finish13.11 mi1.21 mi1653-68548-4165-72165(Top 60%)857(Top 52%)98(Top 49%)

Segment Performance Analysis

Start → 1.2M

0.0 - 1.2 mi

Top 44%
×9stories
+110ft-10ft

Overall

1593

Females

519

F35-39

58

1.2M→4.9M

1.2 - 4.9 mi

Top 42%
×14stories
+243ft-126ft

Overall

1516

Females

474

F35-39

57

4.9M→11.9M

4.9 - 11.9 mi

Top 46%
×22stories
+186ft-427ft

Overall

1660

Females

561

F35-39

64

11.9M→Finish

11.9 - 13.1 mi

Top 60%
×1human
+7ft-8ft

Overall

2165

Females

857

F35-39

98

Passing Analysis

Category:
Athletes Passed
243*
Passed By
303
Net Change
-60
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 1.2M----#1593
1.2M4.9M145*76+69#1593#1524
4.9M11.9M87*148-61#1524#1585
11.9MFinish11*79-68#1585#1653
TOTALS243*303-60

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

📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

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
Share Feedback

Official Timing Data

The San Francisco Marathon

The San Francisco Marathon