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BOSTON MARATHON 2023

Sara Barbosa Miranda

Bib: 12903•F

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 34%
Gender (Female)
#0 / 11423
Top 15%
Division (F18-39)
#0 / 4884
Top 27%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:23
Rank: #12826
Start → 5K
24:23 | 7:51/mi
10K· 6.21 mi
48:14
Rank: #12377 (+449)
5K → 10K
23:51 | 7:41/mi
15K· 9.32 mi
1:11:43
Rank: #11732 (+645)
10K → 15K
23:29 | 7:34/mi
20K· 12.43 mi
1:35:15
Rank: #11224 (+508)
15K → 20K
23:32 | 7:34/mi
Half· 13.11 mi
1:40:21
Rank: #11157 (+67)
20K → Half
5:06 | 7:29/mi
25K· 15.53 mi
1:58:40
Rank: #10810 (+347)
Half → 25K
18:19 | 7:33/mi
30K· 18.64 mi
2:22:37
Rank: #10367 (+443)
25K → 30K
23:57 | 7:43/mi
20M
2:32:59
Rank: #10156 (+211)
30K → 20M
10:22 | 7:38/mi
21M
2:40:54
Rank: #9907 (+249)
20M → 21M
7:55 | 7:55/mi
35K· 21.75 mi
2:46:32
Rank: #9853 (+54)
21M → 35K
5:38 | 7:32/mi
23M
2:56:09
Rank: #9680 (+173)
35K → 23M
9:37 | 7:41/mi
24M
3:03:25
Rank: #9500 (+180)
23M → 24M
7:16 | 7:16/mi
40K· 24.85 mi
3:09:37
Rank: #9276 (+224)
24M → 40K
6:12 | 7:15/mi
25.2M
3:12:18
Rank: #9198 (+78)
40K → 25.2M
2:41 | 7:47/mi
Finish· 26.22 mi
3:19:29
Rank: #9043 (+155)
25.2M → Finish
7:11 | 7:03/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:40:21
Pace7:39 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:39:08
Pace7:34 /mi
📊Negative Split: 1.2% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:0324:237:5124:23
7:51
-
10K
6.21 mi11:15:5448:147:4623:51
7:41
-0:10
15K
9.32 mi11:39:231:11:437:4223:29
7:34
-0:07
20K
12.43 mi12:02:551:35:157:4023:32
7:34
0:00
Half
13.11 mi12:08:011:40:217:395:06
7:29
-0:05
25K
15.53 mi12:26:201:58:407:3818:19
7:33
+0:04
30K
18.64 mi12:50:172:22:377:3923:57
7:43
+0:10
20M
20.00 mi13:00:392:32:597:3910:22
7:38
-0:05
21M
21.00 mi13:08:342:40:547:407:55
7:55
+0:17
35K
21.75 mi13:14:122:46:327:395:38
7:32
-0:23
23M
23.00 mi13:23:492:56:097:409:37
7:41
+0:09
24M
24.00 mi13:31:053:03:257:397:16
7:16
-0:25
40K
24.85 mi13:37:173:09:377:386:12
7:15
-0:01
25.2M
25.20 mi13:39:583:12:187:382:41
7:47
+0:32
Finish
26.22 mi13:47:093:19:297:377:11
7:03
-0:44

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

7:03 /mi

Average Pace

7:37 /mi

Slowest Pace

7:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:44:30

82% of race

Time at Steady Pace

34:59

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:36 /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 mi10:52:0324:237:5124:23
7:51
#12826
10K
6.21 mi11:15:5448:147:4623:51
7:41
#12377
15K
9.32 mi11:39:231:11:437:4223:29
7:34
#11732
20K
12.43 mi12:02:551:35:157:4023:32
7:34
#11224
Half
13.11 mi12:08:011:40:217:395:06
7:29
#11157
25K
15.53 mi12:26:201:58:407:3818:19
7:33
#10810
30K
18.64 mi12:50:172:22:377:3923:57
7:43
#10367
20M
20.00 mi13:00:392:32:597:3910:22
7:38
#10156
21M
21.00 mi13:08:342:40:547:407:55
7:55
#9907
35K
21.75 mi13:14:122:46:327:395:38
7:32
#9853
23M
23.00 mi13:23:492:56:097:409:37
7:41
#9680
24M
24.00 mi13:31:053:03:257:397:16
7:16
#9500
40K
24.85 mi13:37:173:09:377:386:12
7:15
#9276
25.2M
25.20 mi13:39:583:12:187:382:41
7:47
#9198
Finish
26.22 mi13:47:093:19:297:377:11
7:03
#9043
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi128263332333210659(Top 40%)2160(Top 19%)2160(Top 44%)
10K6.21 mi3.10 mi12377+4493088+2443088+24412030(Top 45%)2887(Top 25%)2887(Top 59%)
15K9.32 mi3.11 mi11732+6452747+3412747+34110659(Top 40%)2160(Top 19%)2160(Top 44%)
20K12.43 mi3.11 mi11224+5082455+2922455+2929914(Top 37%)1873(Top 16%)1873(Top 38%)
Half13.11 mi0.68 mi11157+672419+362419+3610066(Top 38%)1902(Top 17%)1902(Top 39%)
25K15.53 mi2.42 mi10810+3472256+1632256+1639210(Top 35%)1636(Top 14%)1636(Top 33%)
30K18.64 mi3.11 mi10367+4432085+1712085+1718719(Top 33%)1602(Top 14%)1602(Top 33%)
20M20.00 mi1.36 mi10156+2112002+832002+837712(Top 29%)1300(Top 11%)1300(Top 27%)
21M21.00 mi1.00 mi9907+2491906+961906+966871(Top 26%)1090(Top 10%)1090(Top 22%)
35K21.75 mi0.75 mi9853+541896+101896+108772(Top 33%)1805(Top 16%)1805(Top 37%)
23M23.00 mi1.25 mi9680+1731851+451851+457642(Top 29%)1430(Top 13%)1430(Top 29%)
24M24.00 mi1.00 mi9500+1801793+581793+586199(Top 23%)991(Top 9%)991(Top 20%)
40K24.85 mi0.85 mi9276+2241736+571736+575200(Top 20%)725(Top 6%)725(Top 15%)
25.2M25.20 mi0.35 mi9198+781711+251711+255388(Top 20%)880(Top 8%)880(Top 18%)
Finish26.22 mi1.02 mi9043+1551665+461665+465559(Top 21%)938(Top 8%)938(Top 19%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21stories
+97ft-345ft

Overall

10659

Females

2160

F18-39

2160

5K→10K

3.1 - 6.2 mi

Top 45%
×5stories
+79ft-138ft

Overall

12030

Females

2887

F18-39

2887

10K→15K

6.2 - 9.3 mi

Top 40%
×3stories
+67ft-78ft

Overall

10659

Females

2160

F18-39

2160

15K→20K

9.3 - 12.4 mi

Top 37%
×5stories
+106ft-86ft

Overall

9914

Females

1873

F18-39

1873

20K→Half

12.4 - 13.1 mi

Top 38%
×2stories
+19ft-37ft

Overall

10066

Females

1902

F18-39

1902

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

9210

Females

1636

F18-39

1636

25K→30K

15.5 - 18.6 mi

Top 33%
×9stories
+181ft-148ft

Overall

8719

Females

1602

F18-39

1602

30K→20M

18.6 - 20.0 mi

Top 29%
×5stories
+64ft-50ft

Overall

7712

Females

1300

F18-39

1300

20M→21M

20.0 - 21.0 mi

Top 26%
×8stories
+106ft-24ft

Overall

6871

Females

1090

F18-39

1090

21M→35K

21.0 - 21.8 mi

Top 33%
×7stories
+17ft-86ft

Overall

8772

Females

1805

F18-39

1805

35K→23M

21.8 - 23.0 mi

Top 29%
×5stories
+23ft-63ft

Overall

7642

Females

1430

F18-39

1430

23M→24M

23.0 - 24.0 mi

Top 23%
×6stories
+12ft-82ft

Overall

6199

Females

991

F18-39

991

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5200

Females

725

F18-39

725

40K→25.2M

24.9 - 25.2 mi

Top 20%
×1story
+13ft-16ft

Overall

5388

Females

880

F18-39

880

25.2M→Finish

25.2 - 26.2 mi

Top 21%
×2stories
+22ft-21ft

Overall

5559

Females

938

F18-39

938

Passing Analysis

Category:
Athletes Passed
4044*
Passed By
261
Net Change
+3783
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12826
5K → 10K598149+449#12826#12377
10K → 15K66823+645#12377#11732
15K → 20K51911+508#11732#11224
20K → Half692+67#11224#11157
Half → 25K3547+347#11157#10810
25K → 30K45815+443#10810#10367
30K → 20M219*8+211#10367#10156
20M → 21M254*5+249#10156#9907
21M → 35K7117+54#9907#9853
35K → 23M18815+173#9853#9680
23M → 24M1822+180#9680#9500
24M → 40K225*1+224#9500#9276
40K → 25.2M802+78#9276#9198
25.2M → Finish1594+155#9198#9043
TOTALS4044*261+3783

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

📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing