Boston Marathon logo
BOSTON MARATHON 2023

Samantha Carter

Bib: 13915•F

NY

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 30%
Gender (Female)
#0 / 11423
Top 11%
Division (F18-39)
#0 / 4884
Top 21%
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
7:29/mi
23:16
↑ 97↓ 3451.5%
10K· 6.21 mi
7:25/mi
46:17
↑ 79↓ 1380.4%
15K· 9.32 mi
7:25/mi
1:09:19
↑ 67↓ 78
20K· 12.43 mi
7:30/mi
1:32:36
↑ 106↓ 860.1%
Half· 13.11 mi
7:20/mi
1:37:36
↑ 19↓ 370.5%
25K· 15.53 mi
7:27/mi
1:55:40
↑ 66↓ 880.2%
30K· 18.64 mi
7:33/mi
2:19:08
↑ 181↓ 1480.2%
20M
7:38/mi
2:29:30
↑ 64↓ 500.2%
21M
7:53/mi
2:37:23
↑ 106↓ 241.6%
35K· 21.75 mi
7:09/mi
2:42:44
↑ 17↓ 861.7%
23M
7:34/mi
2:52:12
↑ 23↓ 630.6%
24M
7:19/mi
2:59:31
↓ 821.3%
40K· 24.85 mi
7:28/mi
3:05:54
↓ 200.3%
25.2M
8:01/mi
3:08:40
↑ 13↓ 160.2%
Finish· 26.22 mi
7:18/mi
3:16:06
↑ 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 Half⚖️ Balanced
Distance13.11 mi
Time1:37:36
Pace7:27 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:38:30
Pace7:31 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:3523:167:2923:16
7:29
-
10K
6.21 mi11:14:3646:177:2723:01
7:25
-0:04
15K
9.32 mi11:37:381:09:197:2623:02
7:25
0:00
20K
12.43 mi12:00:551:32:367:2723:17
7:30
+0:05
Half
13.11 mi12:05:551:37:367:275:00
7:20
-0:10
25K
15.53 mi12:23:591:55:407:2718:04
7:27
+0:07
30K
18.64 mi12:47:272:19:087:2823:28
7:33
+0:06
20M
20.00 mi12:57:492:29:307:2810:22
7:38
+0:05
21M
21.00 mi13:05:422:37:237:307:53
7:53
+0:15
35K
21.75 mi13:11:032:42:447:295:21
7:09
-0:44
23M
23.00 mi13:20:312:52:127:299:28
7:34
+0:25
24M
24.00 mi13:27:502:59:317:297:19
7:19
-0:15
40K
24.85 mi13:34:133:05:547:296:23
7:28
+0:09
25.2M
25.20 mi13:36:593:08:407:292:46
8:01
+0:33
Finish
26.22 mi13:44:253:16:067:297:26
7:18
-0:43

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

7:09 /mi

Average Pace

7:29 /mi

Slowest Pace

8:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:05:27

95% of race

Time at Steady Pace

10:39

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:29 /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 mi10:51:3523:167:2923:16
7:29
#9541
10K
6.21 mi11:14:3646:177:2723:01
7:25
#9575
15K
9.32 mi11:37:381:09:197:2623:02
7:25
#9502
20K
12.43 mi12:00:551:32:367:2723:17
7:30
#9428
Half
13.11 mi12:05:551:37:367:275:00
7:20
#9390
25K
15.53 mi12:23:591:55:407:2718:04
7:27
#9188
30K
18.64 mi12:47:272:19:087:2823:28
7:33
#8861
20M
20.00 mi12:57:492:29:307:2810:22
7:38
#8757
21M
21.00 mi13:05:422:37:237:307:53
7:53
#8594
35K
21.75 mi13:11:032:42:447:295:21
7:09
#8502
23M
23.00 mi13:20:312:52:127:299:28
7:34
#8374
24M
24.00 mi13:27:502:59:317:297:19
7:19
#8255
40K
24.85 mi13:34:133:05:547:296:23
7:28
#8160
25.2M
25.20 mi13:36:593:08:407:292:46
8:01
#8114
Finish
26.22 mi13:44:253:16:067:297:26
7:18
#8052
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi9541163416349461(Top 36%)1603(Top 14%)1603(Top 33%)
10K6.21 mi3.10 mi9575-341644-101644-109711(Top 36%)1696(Top 15%)1696(Top 35%)
15K9.32 mi3.11 mi9502+731615+291615+299461(Top 36%)1603(Top 14%)1603(Top 33%)
20K12.43 mi3.11 mi9428+741603+121603+129275(Top 35%)1587(Top 14%)1587(Top 32%)
Half13.11 mi0.68 mi9390+381591+121591+128871(Top 33%)1421(Top 12%)1421(Top 29%)
25K15.53 mi2.42 mi9188+2021520+711520+718434(Top 32%)1338(Top 12%)1338(Top 27%)
30K18.64 mi3.11 mi8861+3271429+911429+917620(Top 29%)1154(Top 10%)1154(Top 24%)
20M20.00 mi1.36 mi8757+1041410+191410+197701(Top 29%)1289(Top 11%)1289(Top 26%)
21M21.00 mi1.00 mi8594+1631370+401370+406667(Top 25%)1010(Top 9%)1010(Top 21%)
35K21.75 mi0.75 mi8502+921351+191351+196280(Top 24%)861(Top 8%)861(Top 18%)
23M23.00 mi1.25 mi8374+1281319+321319+326832(Top 26%)1115(Top 10%)1115(Top 23%)
24M24.00 mi1.00 mi8255+1191298+211298+216518(Top 24%)1079(Top 9%)1079(Top 22%)
40K24.85 mi0.85 mi8160+951286+121286+126534(Top 25%)1170(Top 10%)1170(Top 24%)
25.2M25.20 mi0.35 mi8114+461274+121274+126722(Top 25%)1308(Top 11%)1308(Top 27%)
Finish26.22 mi1.02 mi8052+621276-21276-27119(Top 27%)1466(Top 13%)1466(Top 30%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21story building
+97ft-345ft

Overall

9461

Females

1603

F18-39

1603

5K→10K

3.1 - 6.2 mi

Top 36%
×5story building
+79ft-138ft

Overall

9711

Females

1696

F18-39

1696

10K→15K

6.2 - 9.3 mi

Top 36%
×3story building
+67ft-78ft

Overall

9461

Females

1603

F18-39

1603

15K→20K

9.3 - 12.4 mi

Top 35%
×5story building
+106ft-86ft

Overall

9275

Females

1587

F18-39

1587

20K→Half

12.4 - 13.1 mi

Top 33%
×2story building
+19ft-37ft

Overall

8871

Females

1421

F18-39

1421

Half→25K

13.1 - 15.5 mi

Top 32%
×4story building
+66ft-88ft

Overall

8434

Females

1338

F18-39

1338

25K→30K

15.5 - 18.6 mi

Top 29%
×9story building
+181ft-148ft

Overall

7620

Females

1154

F18-39

1154

30K→20M

18.6 - 20.0 mi

Top 29%
×5story building
+64ft-50ft

Overall

7701

Females

1289

F18-39

1289

20M→21M

20.0 - 21.0 mi

Top 25%
×8story building
+106ft-24ft

Overall

6667

Females

1010

F18-39

1010

21M→35K

21.0 - 21.8 mi

Top 24%
×7story building
+17ft-86ft

Overall

6280

Females

861

F18-39

861

35K→23M

21.8 - 23.0 mi

Top 26%
×5story building
+23ft-63ft

Overall

6832

Females

1115

F18-39

1115

23M→24M

23.0 - 24.0 mi

Top 24%
×6story building
+12ft-82ft

Overall

6518

Females

1079

F18-39

1079

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

6534

Females

1170

F18-39

1170

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

6722

Females

1308

F18-39

1308

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2story building
+22ft-21ft

Overall

7119

Females

1466

F18-39

1466

Passing Analysis

Category:
Athletes Passed
2221
Passed By
732
Net Change
+1489
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9541
5K → 10K275309-34#9541#9575
10K → 15K197124+73#9575#9502
15K → 20K174100+74#9502#9428
20K → Half479+38#9428#9390
Half → 25K22422+202#9390#9188
25K → 30K36639+327#9188#8861
30K → 20M12521+104#8861#8757
20M → 21M17613+163#8757#8594
21M → 35K986+92#8594#8502
35K → 23M14315+128#8502#8374
23M → 24M13617+119#8374#8255
24M → 40K11116+95#8255#8160
40K → 25.2M5610+46#8160#8114
25.2M → Finish9331+62#8114#8052
TOTALS2221732+1489
📊

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