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BOSTON MARATHON 2023

Anna Smialek

Bib: 14744•F

FL

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 37%
Gender (Female)
#0 / 11423
Top 18%
Division (F18-39)
#0 / 4884
Top 32%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:33
Rank: #13255
Start → 5K
24:33 | 7:54/mi
10K· 6.21 mi
48:32
Rank: #12797 (+458)
5K → 10K
23:59 | 7:43/mi
15K· 9.32 mi
1:12:17
Rank: #12265 (+532)
10K → 15K
23:45 | 7:39/mi
20K· 12.43 mi
1:36:14
Rank: #11905 (+360)
15K → 20K
23:57 | 7:43/mi
Half· 13.11 mi
1:41:32
Rank: #11943 (-38)
20K → Half
5:18 | 7:46/mi
25K· 15.53 mi
2:00:14
Rank: #11617 (+326)
Half → 25K
18:42 | 7:43/mi
30K· 18.64 mi
2:24:26
Rank: #11156 (+461)
25K → 30K
24:12 | 7:47/mi
20M
2:35:10
Rank: #11001 (+155)
30K → 20M
10:44 | 7:54/mi
21M
2:43:24
Rank: #10859 (+142)
20M → 21M
8:14 | 8:14/mi
35K· 21.75 mi
2:48:57
Rank: #10728 (+131)
21M → 35K
5:33 | 7:25/mi
23M
2:58:37
Rank: #10536 (+192)
35K → 23M
9:40 | 7:43/mi
24M
3:06:12
Rank: #10411 (+125)
23M → 24M
7:35 | 7:35/mi
40K· 24.85 mi
3:12:41
Rank: #10248 (+163)
24M → 40K
6:29 | 7:35/mi
25.2M
3:15:26
Rank: #10169 (+79)
40K → 25.2M
2:45 | 7:58/mi
Finish· 26.22 mi
3:22:36
Rank: #9922 (+247)
25.2M → Finish
7:10 | 7:02/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:41:32
Pace7:45 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:41:04
Pace7:43 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:4024:337:5424:33
7:54
-
10K
6.21 mi11:17:3948:327:4923:59
7:43
-0:11
15K
9.32 mi11:41:241:12:177:4523:45
7:39
-0:04
20K
12.43 mi12:05:211:36:147:4523:57
7:43
+0:04
Half
13.11 mi12:10:391:41:327:455:18
7:46
+0:03
25K
15.53 mi12:29:212:00:147:4418:42
7:43
-0:03
30K
18.64 mi12:53:332:24:267:4524:12
7:47
+0:04
20M
20.00 mi13:04:172:35:107:4510:44
7:54
+0:07
21M
21.00 mi13:12:312:43:247:478:14
8:14
+0:20
35K
21.75 mi13:18:042:48:577:465:33
7:25
-0:49
23M
23.00 mi13:27:442:58:377:469:40
7:43
+0:18
24M
24.00 mi13:35:193:06:127:467:35
7:35
-0:08
40K
24.85 mi13:41:483:12:417:456:29
7:35
0:00
25.2M
25.20 mi13:44:333:15:267:452:45
7:58
+0:23
Finish
26.22 mi13:51:433:22:367:447:10
7:02
-0:56

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

7:02 /mi

Average Pace

7:44 /mi

Slowest Pace

8:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:06:50

63% of race

Time at Steady Pace

1:15:46

37% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:44 /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 mi10:53:4024:337:5424:33
7:54
#13255
10K
6.21 mi11:17:3948:327:4923:59
7:43
#12797
15K
9.32 mi11:41:241:12:177:4523:45
7:39
#12265
20K
12.43 mi12:05:211:36:147:4523:57
7:43
#11905
Half
13.11 mi12:10:391:41:327:455:18
7:46
#11943
25K
15.53 mi12:29:212:00:147:4418:42
7:43
#11617
30K
18.64 mi12:53:332:24:267:4524:12
7:47
#11156
20M
20.00 mi13:04:172:35:107:4510:44
7:54
#11001
21M
21.00 mi13:12:312:43:247:478:14
8:14
#10859
35K
21.75 mi13:18:042:48:577:465:33
7:25
#10728
23M
23.00 mi13:27:442:58:377:469:40
7:43
#10536
24M
24.00 mi13:35:193:06:127:467:35
7:35
#10411
40K
24.85 mi13:41:483:12:417:456:29
7:35
#10248
25.2M
25.20 mi13:44:333:15:267:452:45
7:58
#10169
Finish
26.22 mi13:51:433:22:367:447:10
7:02
#9922
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi132553575357511376(Top 43%)2552(Top 22%)2552(Top 52%)
10K6.21 mi3.10 mi12797+4583311+2643311+26412434(Top 47%)3105(Top 27%)3105(Top 64%)
15K9.32 mi3.11 mi12265+5323038+2733038+27311376(Top 43%)2552(Top 22%)2552(Top 52%)
20K12.43 mi3.11 mi11905+3602862+1762862+17610995(Top 41%)2399(Top 21%)2399(Top 49%)
Half13.11 mi0.68 mi11943-382880-182880-1812449(Top 47%)3152(Top 28%)3152(Top 65%)
25K15.53 mi2.42 mi11617+3262709+1712709+17110403(Top 39%)2180(Top 19%)2180(Top 45%)
30K18.64 mi3.11 mi11156+4612501+2082501+2089294(Top 35%)1835(Top 16%)1835(Top 38%)
20M20.00 mi1.36 mi11001+1552431+702431+709571(Top 36%)2047(Top 18%)2047(Top 42%)
21M21.00 mi1.00 mi10859+1422389+422389+428825(Top 33%)1852(Top 16%)1852(Top 38%)
35K21.75 mi0.75 mi10728+1312339+502339+508004(Top 30%)1511(Top 13%)1511(Top 31%)
23M23.00 mi1.25 mi10536+1922265+742265+747903(Top 30%)1550(Top 14%)1550(Top 32%)
24M24.00 mi1.00 mi10411+1252232+332232+338314(Top 31%)1806(Top 16%)1806(Top 37%)
40K24.85 mi0.85 mi10248+1632172+602172+607260(Top 27%)1479(Top 13%)1479(Top 30%)
25.2M25.20 mi0.35 mi10169+792143+292143+296455(Top 24%)1239(Top 11%)1239(Top 25%)
Finish26.22 mi1.02 mi9922+2472058+852058+855450(Top 20%)897(Top 8%)897(Top 18%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 43%
×21stories
+97ft-345ft

Overall

11376

Females

2552

F18-39

2552

5K→10K

3.1 - 6.2 mi

Top 47%
×5stories
+79ft-138ft

Overall

12434

Females

3105

F18-39

3105

10K→15K

6.2 - 9.3 mi

Top 43%
×3stories
+67ft-78ft

Overall

11376

Females

2552

F18-39

2552

15K→20K

9.3 - 12.4 mi

Top 41%
×5stories
+106ft-86ft

Overall

10995

Females

2399

F18-39

2399

20K→Half

12.4 - 13.1 mi

Top 47%
×2stories
+19ft-37ft

Overall

12449

Females

3152

F18-39

3152

Half→25K

13.1 - 15.5 mi

Top 39%
×4stories
+66ft-88ft

Overall

10403

Females

2180

F18-39

2180

25K→30K

15.5 - 18.6 mi

Top 35%
×9stories
+181ft-148ft

Overall

9294

Females

1835

F18-39

1835

30K→20M

18.6 - 20.0 mi

Top 36%
×5stories
+64ft-50ft

Overall

9571

Females

2047

F18-39

2047

20M→21M

20.0 - 21.0 mi

Top 33%
×8stories
+106ft-24ft

Overall

8825

Females

1852

F18-39

1852

21M→35K

21.0 - 21.8 mi

Top 30%
×7stories
+17ft-86ft

Overall

8004

Females

1511

F18-39

1511

35K→23M

21.8 - 23.0 mi

Top 30%
×5stories
+23ft-63ft

Overall

7903

Females

1550

F18-39

1550

23M→24M

23.0 - 24.0 mi

Top 31%
×6stories
+12ft-82ft

Overall

8314

Females

1806

F18-39

1806

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7260

Females

1479

F18-39

1479

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6455

Females

1239

F18-39

1239

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2stories
+22ft-21ft

Overall

5450

Females

897

F18-39

897

Passing Analysis

Category:
Athletes Passed
3726*
Passed By
393
Net Change
+3333
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13255
5K → 10K601143+458#13255#12797
10K → 15K57038+532#12797#12265
15K → 20K38828+360#12265#11905
20K → Half1351-38#11905#11943
Half → 25K34822+326#11943#11617
25K → 30K48221+461#11617#11156
30K → 20M177*22+155#11156#11001
20M → 21M16119+142#11001#10859
21M → 35K1354+131#10859#10728
35K → 23M2019+192#10728#10536
23M → 24M14318+125#10536#10411
24M → 40K1729+163#10411#10248
40K → 25.2M84*5+79#10248#10169
25.2M → Finish251*4+247#10169#9922
TOTALS3726*393+3333

* 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