Boston Marathon logo
BOSTON MARATHON 2023

Karina Kalil De Amorim

Bib: 19728•F

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 47%
Gender (Female)
#0 / 11423
Top 30%
Masters (Masters Women)
#0 / 6539
Top 17%
Division (F45-49)
#0 / 1817
Top 18%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:52
Rank: #14060
Start → 5K
24:52 | 8:00/mi
10K· 6.21 mi
49:20
Rank: #13908 (+152)
5K → 10K
24:28 | 7:53/mi
15K· 9.32 mi
1:13:48
Rank: #13726 (+182)
10K → 15K
24:28 | 7:53/mi
20K· 12.43 mi
1:38:26
Rank: #13477 (+249)
15K → 20K
24:38 | 7:56/mi
Half· 13.11 mi
1:43:48
Rank: #13467 (+10)
20K → Half
5:22 | 7:52/mi
25K· 15.53 mi
2:03:11
Rank: #13305 (+162)
Half → 25K
19:23 | 8:00/mi
30K· 18.64 mi
2:28:36
Rank: #13078 (+227)
25K → 30K
25:25 | 8:11/mi
20M
2:39:48
Rank: #12969 (+109)
30K → 20M
11:12 | 8:15/mi
21M
2:48:20
Rank: #12785 (+184)
20M → 21M
8:32 | 8:32/mi
35K· 21.75 mi
2:54:20
Rank: #12749 (+36)
21M → 35K
6:00 | 8:01/mi
23M
3:04:41
Rank: #12680 (+69)
35K → 23M
10:21 | 8:16/mi
24M
3:12:45
Rank: #12622 (+58)
23M → 24M
8:04 | 8:04/mi
40K· 24.85 mi
3:19:53
Rank: #12609 (+13)
24M → 40K
7:08 | 8:21/mi
25.2M
3:22:58
Rank: #12608 (+1)
40K → 25.2M
3:05 | 8:56/mi
Finish· 26.22 mi
3:31:20
Rank: #12632 (-24)
25.2M → Finish
8:22 | 8:13/mi

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
Time1:43:48
Pace7:55 /mi
2nd Half
Distance13.11 mi
Time1:47:32
Pace8:12 /mi
📊Positive Split: 3.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:1924:528:0024:52
8:00
-
10K
6.21 mi11:40:4749:207:5624:28
7:53
-0:07
15K
9.32 mi12:05:151:13:487:5524:28
7:53
0:00
20K
12.43 mi12:29:531:38:267:5524:38
7:56
+0:03
Half
13.11 mi12:35:151:43:487:555:22
7:52
-0:04
25K
15.53 mi12:54:382:03:117:5619:23
8:00
+0:08
30K
18.64 mi13:20:032:28:367:5825:25
8:11
+0:11
20M
20.00 mi13:31:152:39:487:5911:12
8:15
+0:04
21M
21.00 mi13:39:472:48:208:018:32
8:32
+0:17
35K
21.75 mi13:45:472:54:208:016:00
8:01
-0:31
23M
23.00 mi13:56:083:04:418:0210:21
8:16
+0:15
24M
24.00 mi14:04:123:12:458:028:04
8:04
-0:12
40K
24.85 mi14:11:203:19:538:037:08
8:21
+0:17
25.2M
25.20 mi14:14:253:22:588:033:05
8:56
+0:35
Finish
26.22 mi14:22:473:31:208:048:22
8:13
-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

7:52 /mi

Average Pace

8:04 /mi

Slowest Pace

8:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:28:15

99% of race

Time at Steady Pace

3:05

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:04 /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 mi11:16:1924:528:0024:52
8:00
#14060
10K
6.21 mi11:40:4749:207:5624:28
7:53
#13908
15K
9.32 mi12:05:151:13:487:5524:28
7:53
#13726
20K
12.43 mi12:29:531:38:267:5524:38
7:56
#13477
Half
13.11 mi12:35:151:43:487:555:22
7:52
#13467
25K
15.53 mi12:54:382:03:117:5619:23
8:00
#13305
30K
18.64 mi13:20:032:28:367:5825:25
8:11
#13078
20M
20.00 mi13:31:152:39:487:5911:12
8:15
#12969
21M
21.00 mi13:39:472:48:208:018:32
8:32
#12785
35K
21.75 mi13:45:472:54:208:016:00
8:01
#12749
23M
23.00 mi13:56:083:04:418:0210:21
8:16
#12680
24M
24.00 mi14:04:123:12:458:028:04
8:04
#12622
40K
24.85 mi14:11:203:19:538:037:08
8:21
#12609
25.2M
25.20 mi14:14:253:22:588:033:05
8:56
#12608
Finish
26.22 mi14:22:473:31:208:048:22
8:13
#12632
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi140604068406813316(Top 50%)3677(Top 32%)3677(Top 202%)
10K6.21 mi3.10 mi13908+1523985+833985+8313781(Top 52%)3911(Top 34%)3911(Top 215%)
15K9.32 mi3.11 mi13726+1823899+863899+8613316(Top 50%)3677(Top 32%)3677(Top 202%)
20K12.43 mi3.11 mi13477+2493771+1283771+12812871(Top 48%)3476(Top 30%)3476(Top 191%)
Half13.11 mi0.68 mi13467+103764+73764+713350(Top 50%)3699(Top 32%)3699(Top 204%)
25K15.53 mi2.42 mi13305+1623686+783686+7812709(Top 48%)3474(Top 30%)3474(Top 191%)
30K18.64 mi3.11 mi13078+2273599+873599+8712211(Top 46%)3308(Top 29%)3308(Top 182%)
20M20.00 mi1.36 mi12969+1093549+503549+5011982(Top 45%)3268(Top 29%)3268(Top 180%)
21M21.00 mi1.00 mi12785+1843465+843465+8410708(Top 40%)2734(Top 24%)2734(Top 150%)
35K21.75 mi0.75 mi12749+363458+73458+712310(Top 46%)3601(Top 32%)3601(Top 198%)
23M23.00 mi1.25 mi12680+693438+203438+2011663(Top 44%)3337(Top 29%)3337(Top 184%)
24M24.00 mi1.00 mi12622+583424+143424+1411727(Top 44%)3446(Top 30%)3446(Top 190%)
40K24.85 mi0.85 mi12609+133435-113435-1112357(Top 46%)3857(Top 34%)3857(Top 212%)
25.2M25.20 mi0.35 mi12608+13447-123447-1212224(Top 46%)3837(Top 34%)3837(Top 211%)
Finish26.22 mi1.02 mi12632-243480-333480-3313517(Top 51%)4472(Top 39%)4472(Top 246%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21stories
+97ft-345ft

Overall

13316

Females

3677

F45-49

3677

5K→10K

3.1 - 6.2 mi

Top 52%
×5stories
+79ft-138ft

Overall

13781

Females

3911

F45-49

3911

10K→15K

6.2 - 9.3 mi

Top 50%
×3stories
+67ft-78ft

Overall

13316

Females

3677

F45-49

3677

15K→20K

9.3 - 12.4 mi

Top 48%
×5stories
+106ft-86ft

Overall

12871

Females

3476

F45-49

3476

20K→Half

12.4 - 13.1 mi

Top 50%
×2stories
+19ft-37ft

Overall

13350

Females

3699

F45-49

3699

Half→25K

13.1 - 15.5 mi

Top 48%
×4stories
+66ft-88ft

Overall

12709

Females

3474

F45-49

3474

25K→30K

15.5 - 18.6 mi

Top 46%
×9stories
+181ft-148ft

Overall

12211

Females

3308

F45-49

3308

30K→20M

18.6 - 20.0 mi

Top 45%
×5stories
+64ft-50ft

Overall

11982

Females

3268

F45-49

3268

20M→21M

20.0 - 21.0 mi

Top 40%
×8stories
+106ft-24ft

Overall

10708

Females

2734

F45-49

2734

21M→35K

21.0 - 21.8 mi

Top 46%
×7stories
+17ft-86ft

Overall

12310

Females

3601

F45-49

3601

35K→23M

21.8 - 23.0 mi

Top 44%
×5stories
+23ft-63ft

Overall

11663

Females

3337

F45-49

3337

23M→24M

23.0 - 24.0 mi

Top 44%
×6stories
+12ft-82ft

Overall

11727

Females

3446

F45-49

3446

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

12357

Females

3857

F45-49

3857

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

12224

Females

3837

F45-49

3837

25.2M→Finish

25.2 - 26.2 mi

Top 51%
×2stories
+22ft-21ft

Overall

13517

Females

4472

F45-49

4472

Passing Analysis

Category:
Athletes Passed
2325
Passed By
897
Net Change
+1428
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14060
5K → 10K377225+152#14060#13908
10K → 15K285103+182#13908#13726
15K → 20K30960+249#13726#13477
20K → Half3525+10#13477#13467
Half → 25K22058+162#13467#13305
25K → 30K30376+227#13305#13078
30K → 20M15344+109#13078#12969
20M → 21M20420+184#12969#12785
21M → 35K7135+36#12785#12749
35K → 23M11344+69#12749#12680
23M → 24M10345+58#12680#12622
24M → 40K6552+13#12622#12609
40K → 25.2M2827+1#12609#12608
25.2M → Finish5983-24#12608#12632
TOTALS2325897+1428
📊

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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing