Boston Marathon logo
BOSTON MARATHON 2023

Stacey Brake

Bib: 17742•F

MO

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 41%
Gender (Female)
#0 / 11423
Top 23%
Division (F18-39)
#0 / 4884
Top 39%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:40/mi
23:48
↑ 97↓ 3451.5%
10K· 6.21 mi
7:40/mi
47:38
↑ 79↓ 1380.4%
15K· 9.32 mi
7:44/mi
1:11:39
↑ 67↓ 78
20K· 12.43 mi
7:48/mi
1:35:52
↑ 106↓ 860.1%
Half· 13.11 mi
7:43/mi
1:41:08
↑ 19↓ 370.5%
25K· 15.53 mi
7:52/mi
2:00:13
↑ 66↓ 880.2%
30K· 18.64 mi
7:53/mi
2:24:42
↑ 181↓ 1480.2%
20M
8:05/mi
2:35:41
↑ 64↓ 500.2%
21M
8:26/mi
2:44:07
↑ 106↓ 241.6%
35K· 21.75 mi
7:45/mi
2:49:55
↑ 17↓ 861.7%
23M
8:02/mi
2:59:59
↑ 23↓ 630.6%
24M
7:59/mi
3:07:58
↓ 821.3%
40K· 24.85 mi
8:08/mi
3:14:55
↓ 200.3%
25.2M
8:45/mi
3:17:56
↑ 13↓ 160.2%
Finish· 26.22 mi
7:59/mi
3:26:04
↑ 22↓ 21

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 HalfFaster
Distance13.11 mi
Time1:41:08
Pace7:43 /mi
2nd Half
Distance13.11 mi
Time1:44:56
Pace8:00 /mi
📊Positive Split: 3.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:0823:487:4023:48
7:40
-
10K
6.21 mi11:37:5847:387:4023:50
7:40
0:00
15K
9.32 mi12:01:591:11:397:4124:01
7:44
+0:04
20K
12.43 mi12:26:121:35:527:4324:13
7:48
+0:04
Half
13.11 mi12:31:281:41:087:435:16
7:43
-0:05
25K
15.53 mi12:50:332:00:137:4419:05
7:52
+0:09
30K
18.64 mi13:15:022:24:427:4624:29
7:53
+0:01
20M
20.00 mi13:26:012:35:417:4710:59
8:05
+0:12
21M
21.00 mi13:34:272:44:077:498:26
8:26
+0:21
35K
21.75 mi13:40:152:49:557:495:48
7:45
-0:41
23M
23.00 mi13:50:192:59:597:5010:04
8:02
+0:17
24M
24.00 mi13:58:183:07:587:507:59
7:59
-0:03
40K
24.85 mi14:05:153:14:557:516:57
8:08
+0:09
25.2M
25.20 mi14:08:163:17:567:513:01
8:45
+0:37
Finish
26.22 mi14:16:243:26:047:528:08
7:59
-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

7:40 /mi

Average Pace

7:52 /mi

Slowest Pace

8:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:14:37

94% of race

Time at Steady Pace

11:27

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:52 /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...
0mi6.6mi13.1mi19.7mi26.2mi
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
5K
3.11 mi11:14:0823:487:4023:48
7:40
#11122
10K
6.21 mi11:37:5847:387:4023:50
7:40
#11493
15K
9.32 mi12:01:591:11:397:4124:01
7:44
#11676
20K
12.43 mi12:26:121:35:527:4324:13
7:48
#11641
Half
13.11 mi12:31:281:41:087:435:16
7:43
#11662
25K
15.53 mi12:50:332:00:137:4419:05
7:52
#11611
30K
18.64 mi13:15:022:24:427:4624:29
7:53
#11274
20M
20.00 mi13:26:012:35:417:4710:59
8:05
#11222
21M
21.00 mi13:34:272:44:077:498:26
8:26
#11120
35K
21.75 mi13:40:152:49:557:495:48
7:45
#11097
23M
23.00 mi13:50:192:59:597:5010:04
8:02
#10994
24M
24.00 mi13:58:183:07:587:507:59
7:59
#10997
40K
24.85 mi14:05:153:14:557:516:57
8:08
#10990
25.2M
25.20 mi14:08:163:17:567:513:01
8:45
#10966
Finish
26.22 mi14:16:243:26:047:528:08
7:59
#10997
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi111222395239512112(Top 45%)2954(Top 26%)2954(Top 60%)
10K6.21 mi3.10 mi11493-3712599-2042599-20412004(Top 45%)2875(Top 25%)2875(Top 59%)
15K9.32 mi3.11 mi11676-1832709-1102709-11012112(Top 45%)2954(Top 26%)2954(Top 60%)
20K12.43 mi3.11 mi11641+352704+52704+511705(Top 44%)2795(Top 24%)2795(Top 57%)
Half13.11 mi0.68 mi11662-212719-152719-1512064(Top 45%)2942(Top 26%)2942(Top 60%)
25K15.53 mi2.42 mi11611+512705+142705+1411694(Top 44%)2887(Top 25%)2887(Top 59%)
30K18.64 mi3.11 mi11274+3372575+1302575+1309995(Top 38%)2162(Top 19%)2162(Top 44%)
20M20.00 mi1.36 mi11222+522556+192556+1910903(Top 41%)2683(Top 23%)2683(Top 55%)
21M21.00 mi1.00 mi11120+1022521+352521+3510101(Top 38%)2434(Top 21%)2434(Top 50%)
35K21.75 mi0.75 mi11097+232519+22519+210339(Top 39%)2528(Top 22%)2528(Top 52%)
23M23.00 mi1.25 mi10994+1032495+242495+2410063(Top 38%)2540(Top 22%)2540(Top 52%)
24M24.00 mi1.00 mi10997-32520-252520-2511131(Top 42%)3155(Top 28%)3155(Top 65%)
40K24.85 mi0.85 mi10990+72550-302550-3010911(Top 41%)3097(Top 27%)3097(Top 63%)
25.2M25.20 mi0.35 mi10966+242552-22552-211065(Top 42%)3223(Top 28%)3223(Top 66%)
Finish26.22 mi1.02 mi10997-312592-402592-4012000(Top 45%)3698(Top 32%)3698(Top 76%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 45%
×21story building
+97ft-345ft

Overall

12112

Females

2954

F18-39

2954

5K→10K

3.1 - 6.2 mi

Top 45%
×5story building
+79ft-138ft

Overall

12004

Females

2875

F18-39

2875

10K→15K

6.2 - 9.3 mi

Top 45%
×3story building
+67ft-78ft

Overall

12112

Females

2954

F18-39

2954

15K→20K

9.3 - 12.4 mi

Top 44%
×5story building
+106ft-86ft

Overall

11705

Females

2795

F18-39

2795

20K→Half

12.4 - 13.1 mi

Top 45%
×2story building
+19ft-37ft

Overall

12064

Females

2942

F18-39

2942

Half→25K

13.1 - 15.5 mi

Top 44%
×4story building
+66ft-88ft

Overall

11694

Females

2887

F18-39

2887

25K→30K

15.5 - 18.6 mi

Top 38%
×9story building
+181ft-148ft

Overall

9995

Females

2162

F18-39

2162

30K→20M

18.6 - 20.0 mi

Top 41%
×5story building
+64ft-50ft

Overall

10903

Females

2683

F18-39

2683

20M→21M

20.0 - 21.0 mi

Top 38%
×8story building
+106ft-24ft

Overall

10101

Females

2434

F18-39

2434

21M→35K

21.0 - 21.8 mi

Top 39%
×7story building
+17ft-86ft

Overall

10339

Females

2528

F18-39

2528

35K→23M

21.8 - 23.0 mi

Top 38%
×5story building
+23ft-63ft

Overall

10063

Females

2540

F18-39

2540

23M→24M

23.0 - 24.0 mi

Top 42%
×6story building
+12ft-82ft

Overall

11131

Females

3155

F18-39

3155

24M→40K

24.0 - 24.9 mi

Top 41%
×1story
+6ft-20ft

Overall

10911

Females

3097

F18-39

3097

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11065

Females

3223

F18-39

3223

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2story building
+22ft-21ft

Overall

12000

Females

3698

F18-39

3698

Passing Analysis

Category:
Athletes Passed
1710
Passed By
1585
Net Change
+125
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11122
5K → 10K159530-371#11122#11493
10K → 15K120303-183#11493#11676
15K → 20K178143+35#11676#11641
20K → Half1940-21#11641#11662
Half → 25K168117+51#11662#11611
25K → 30K37437+337#11611#11274
30K → 20M11765+52#11274#11222
20M → 21M13836+102#11222#11120
21M → 35K5330+23#11120#11097
35K → 23M14542+103#11097#10994
23M → 24M6770-3#10994#10997
24M → 40K7164+7#10997#10990
40K → 25.2M4723+24#10990#10966
25.2M → Finish5485-31#10966#10997
TOTALS17101585+125
📊

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

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing