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BOSTON MARATHON 2023

Anna Costello

Bib: 7236•F

NV

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 43%
Gender (Female)
#0 / 11423
Top 25%
Division (F18-39)
#0 / 4884
Top 42%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:43
Rank: #10876
Start → 5K
23:43 | 7:38/mi
10K· 6.21 mi
48:42
Rank: #13057 (-2181)
5K → 10K
24:59 | 8:02/mi
15K· 9.32 mi
1:12:55
Rank: #12911 (+146)
10K → 15K
24:13 | 7:48/mi
20K· 12.43 mi
1:37:25
Rank: #12761 (+150)
15K → 20K
24:30 | 7:53/mi
Half· 13.11 mi
1:42:56
Rank: #12889 (-128)
20K → Half
5:31 | 8:05/mi
25K· 15.53 mi
2:02:08
Rank: #12700 (+189)
Half → 25K
19:12 | 7:55/mi
30K· 18.64 mi
2:28:17
Rank: #12942 (-242)
25K → 30K
26:09 | 8:25/mi
20M
2:39:10
Rank: #12688 (+254)
30K → 20M
10:53 | 8:01/mi
21M
2:47:37
Rank: #12505 (+183)
20M → 21M
8:27 | 8:27/mi
35K· 21.75 mi
2:53:26
Rank: #12428 (+77)
21M → 35K
5:49 | 7:46/mi
23M
3:03:21
Rank: #12234 (+194)
35K → 23M
9:55 | 7:55/mi
24M
3:10:57
Rank: #12046 (+188)
23M → 24M
7:36 | 7:36/mi
40K· 24.85 mi
3:17:38
Rank: #11900 (+146)
24M → 40K
6:41 | 7:49/mi
25.2M
3:20:52
Rank: #11952 (-52)
40K → 25.2M
3:14 | 9:23/mi
Finish· 26.22 mi
3:27:47
Rank: #11544 (+408)
25.2M → Finish
6:55 | 6:47/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:56
Pace7:51 /mi
2nd Half
Distance13.11 mi
Time1:44:51
Pace8:00 /mi
📊Positive Split: 1.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:28:5023:437:3823:43
7:38
-
10K
6.21 mi10:53:4948:427:5024:59
8:02
+0:24
15K
9.32 mi11:18:021:12:557:4924:13
7:48
-0:14
20K
12.43 mi11:42:321:37:257:5024:30
7:53
+0:05
Half
13.11 mi11:48:031:42:567:515:31
8:05
+0:12
25K
15.53 mi12:07:152:02:087:5219:12
7:55
-0:10
30K
18.64 mi12:33:242:28:177:5726:09
8:25
+0:30
20M
20.00 mi12:44:172:39:107:5710:53
8:01
-0:24
21M
21.00 mi12:52:442:47:377:598:27
8:27
+0:26
35K
21.75 mi12:58:332:53:267:585:49
7:46
-0:41
23M
23.00 mi13:08:283:03:217:589:55
7:55
+0:09
24M
24.00 mi13:16:043:10:577:577:36
7:36
-0:19
40K
24.85 mi13:22:453:17:387:576:41
7:49
+0:13
25.2M
25.20 mi13:25:593:20:527:583:14
9:23
+1:34
Finish
26.22 mi13:32:543:27:477:566:55
6:47
-2:36

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

6:47 /mi

Average Pace

7:56 /mi

Slowest Pace

9:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

38:14

18% of race

Time at Steady Pace

2:11:43

63% of race

Time at Slower Pace

37:50

18% of race

Average Pace: 7:55 /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 mi10:28:5023:437:3823:43
7:38
#10876
10K
6.21 mi10:53:4948:427:5024:59
8:02
#13057
15K
9.32 mi11:18:021:12:557:4924:13
7:48
#12911
20K
12.43 mi11:42:321:37:257:5024:30
7:53
#12761
Half
13.11 mi11:48:031:42:567:515:31
8:05
#12889
25K
15.53 mi12:07:152:02:087:5219:12
7:55
#12700
30K
18.64 mi12:33:242:28:177:5726:09
8:25
#12942
20M
20.00 mi12:44:172:39:107:5710:53
8:01
#12688
21M
21.00 mi12:52:442:47:377:598:27
8:27
#12505
35K
21.75 mi12:58:332:53:267:585:49
7:46
#12428
23M
23.00 mi13:08:283:03:217:589:55
7:55
#12234
24M
24.00 mi13:16:043:10:577:577:36
7:36
#12046
40K
24.85 mi13:22:453:17:387:576:41
7:49
#11900
25.2M
25.20 mi13:25:593:20:527:583:14
9:23
#11952
Finish
26.22 mi13:32:543:27:477:566:55
6:47
#11544
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi108762272227212698(Top 48%)3287(Top 29%)3287(Top 67%)
10K6.21 mi3.10 mi13057-21813478-12063478-120615105(Top 57%)4725(Top 41%)4725(Top 97%)
15K9.32 mi3.11 mi12911+1463405+733405+7312698(Top 48%)3287(Top 29%)3287(Top 67%)
20K12.43 mi3.11 mi12761+1503341+643341+6412501(Top 47%)3255(Top 28%)3255(Top 67%)
Half13.11 mi0.68 mi12889-1283414-733414-7315037(Top 56%)4682(Top 41%)4682(Top 96%)
25K15.53 mi2.42 mi12700+1893333+813333+8112060(Top 45%)3110(Top 27%)3110(Top 64%)
30K18.64 mi3.11 mi12942-2423511-1783511-17813793(Top 52%)4204(Top 37%)4204(Top 86%)
20M20.00 mi1.36 mi12688+2543391+1203391+12010369(Top 39%)2415(Top 21%)2415(Top 49%)
21M21.00 mi1.00 mi12505+1833303+883303+8810213(Top 38%)2488(Top 22%)2488(Top 51%)
35K21.75 mi0.75 mi12428+773273+303273+3010524(Top 40%)2624(Top 23%)2624(Top 54%)
23M23.00 mi1.25 mi12234+1943187+863187+869246(Top 35%)2149(Top 19%)2149(Top 44%)
24M24.00 mi1.00 mi12046+1883105+823105+828454(Top 32%)1873(Top 16%)1873(Top 38%)
40K24.85 mi0.85 mi11900+1463038+673038+678832(Top 33%)2109(Top 18%)2109(Top 43%)
25.2M25.20 mi0.35 mi11952-523076-383076-3814573(Top 55%)5039(Top 44%)5039(Top 103%)
Finish26.22 mi1.02 mi11544+4082880+1962880+1964040(Top 15%)476(Top 4%)476(Top 10%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21stories
+97ft-345ft

Overall

12698

Females

3287

F18-39

3287

5K→10K

3.1 - 6.2 mi

Top 57%
×5stories
+79ft-138ft

Overall

15105

Females

4725

F18-39

4725

10K→15K

6.2 - 9.3 mi

Top 48%
×3stories
+67ft-78ft

Overall

12698

Females

3287

F18-39

3287

15K→20K

9.3 - 12.4 mi

Top 47%
×5stories
+106ft-86ft

Overall

12501

Females

3255

F18-39

3255

20K→Half

12.4 - 13.1 mi

Top 56%
×2stories
+19ft-37ft

Overall

15037

Females

4682

F18-39

4682

Half→25K

13.1 - 15.5 mi

Top 45%
×4stories
+66ft-88ft

Overall

12060

Females

3110

F18-39

3110

25K→30K

15.5 - 18.6 mi

Top 52%
×9stories
+181ft-148ft

Overall

13793

Females

4204

F18-39

4204

30K→20M

18.6 - 20.0 mi

Top 39%
×5stories
+64ft-50ft

Overall

10369

Females

2415

F18-39

2415

20M→21M

20.0 - 21.0 mi

Top 38%
×8stories
+106ft-24ft

Overall

10213

Females

2488

F18-39

2488

21M→35K

21.0 - 21.8 mi

Top 40%
×7stories
+17ft-86ft

Overall

10524

Females

2624

F18-39

2624

35K→23M

21.8 - 23.0 mi

Top 35%
×5stories
+23ft-63ft

Overall

9246

Females

2149

F18-39

2149

23M→24M

23.0 - 24.0 mi

Top 32%
×6stories
+12ft-82ft

Overall

8454

Females

1873

F18-39

1873

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

8832

Females

2109

F18-39

2109

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

14573

Females

5039

F18-39

5039

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2stories
+22ft-21ft

Overall

4040

Females

476

F18-39

476

Passing Analysis

Category:
Athletes Passed
2440
Passed By
3108
Net Change
-668
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10876
5K → 10K102191-2181#10876#13057
10K → 15K283137+146#13057#12911
15K → 20K267117+150#12911#12761
20K → Half8136-128#12761#12889
Half → 25K23344+189#12889#12700
25K → 30K110352-242#12700#12942
30K → 20M2628+254#12942#12688
20M → 21M20522+183#12688#12505
21M → 35K9013+77#12505#12428
35K → 23M2017+194#12428#12234
23M → 24M1935+188#12234#12046
24M → 40K1537+146#12046#11900
40K → 25.2M1769-52#11900#11952
25.2M → Finish4080+408#11952#11544
TOTALS24403108-668
📊

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