Boston Marathon logo
BOSTON MARATHON 2023

Molly Mccarthy

Bib: 17732•F

TX

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 49%
Gender (Female)
#0 / 11423
Top 33%
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:34
Rank: #15662
Start → 5K
8:14/mi
25:34 split
10K· 6.21 mi
50:29
Rank: #15280 (+382)
5K → 10K
8:01/mi
24:55 split
15K· 9.32 mi
1:15:12
Rank: #14883 (+397)
10K → 15K
7:57/mi
24:43 split
20K· 12.43 mi
1:40:03
Rank: #14493 (+390)
15K → 20K
8:00/mi
24:51 split
Half· 13.11 mi
1:45:27
Rank: #14463 (+30)
20K → Half
7:55/mi
5:24 split
25K· 15.53 mi
2:04:45
Rank: #14107 (+356)
Half → 25K
7:58/mi
19:18 split
30K· 18.64 mi
2:30:28
Rank: #13865 (+242)
25K → 30K
8:17/mi
25:43 split
20M
2:41:41
Rank: #13700 (+165)
30K → 20M
8:15/mi
11:13 split
21M
2:50:22
Rank: #13542 (+158)
20M → 21M
8:41/mi
8:41 split
35K· 21.75 mi
2:56:22
Rank: #13486 (+56)
21M → 35K
8:01/mi
6:00 split
23M
3:06:52
Rank: #13386 (+100)
35K → 23M
8:23/mi
10:30 split
24M
3:15:04
Rank: #13324 (+62)
23M → 24M
8:12/mi
8:12 split
40K· 24.85 mi
3:22:10
Rank: #13256 (+68)
24M → 40K
8:18/mi
7:06 split
25.2M
3:25:09
Rank: #13189 (+67)
40K → 25.2M
8:39/mi
2:59 split
Finish· 26.22 mi
3:33:14
Rank: #13120 (+69)
25.2M → Finish
7:56/mi
8:05 split

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
Time1:45:27
Pace8:03 /mi
2nd Half
Distance13.11 mi
Time1:47:47
Pace8:13 /mi
📊Positive Split: 2.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:1525:348:1425:34
8:14
-
10K
6.21 mi11:41:1050:298:0724:55
8:01
-0:13
15K
9.32 mi12:05:531:15:128:0424:43
7:57
-0:04
20K
12.43 mi12:30:441:40:038:0324:51
8:00
+0:03
Half
13.11 mi12:36:081:45:278:035:24
7:55
-0:05
25K
15.53 mi12:55:262:04:458:0219:18
7:58
+0:03
30K
18.64 mi13:21:092:30:288:0425:43
8:17
+0:19
20M
20.00 mi13:32:222:41:418:0511:13
8:15
-0:02
21M
21.00 mi13:41:032:50:228:078:41
8:41
+0:26
35K
21.75 mi13:47:032:56:228:076:00
8:01
-0:40
23M
23.00 mi13:57:333:06:528:0710:30
8:23
+0:22
24M
24.00 mi14:05:453:15:048:088:12
8:12
-0:11
40K
24.85 mi14:12:513:22:108:087:06
8:18
+0:06
25.2M
25.20 mi14:15:503:25:098:082:59
8:39
+0:21
Finish
26.22 mi14:23:553:33:148:088:05
7:56
-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

7:55 /mi

Average Pace

8:08 /mi

Slowest Pace

8:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:11:04

90% of race

Time at Steady Pace

22:10

10% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:08 /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 mi11:16:1525:348:1425:34
8:14
#15662
10K
6.21 mi11:41:1050:298:0724:55
8:01
#15280
15K
9.32 mi12:05:531:15:128:0424:43
7:57
#14883
20K
12.43 mi12:30:441:40:038:0324:51
8:00
#14493
Half
13.11 mi12:36:081:45:278:035:24
7:55
#14463
25K
15.53 mi12:55:262:04:458:0219:18
7:58
#14107
30K
18.64 mi13:21:092:30:288:0425:43
8:17
#13865
20M
20.00 mi13:32:222:41:418:0511:13
8:15
#13700
21M
21.00 mi13:41:032:50:228:078:41
8:41
#13542
35K
21.75 mi13:47:032:56:228:076:00
8:01
#13486
23M
23.00 mi13:57:333:06:528:0710:30
8:23
#13386
24M
24.00 mi14:05:453:15:048:088:12
8:12
#13324
40K
24.85 mi14:12:513:22:108:087:06
8:18
#13256
25.2M
25.20 mi14:15:503:25:098:082:59
8:39
#13189
Finish
26.22 mi14:23:553:33:148:088:05
7:56
#13120
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi156625072507214039(Top 53%)4108(Top 36%)4108(Top 84%)
10K6.21 mi3.10 mi15280+3824821+2514821+25114954(Top 56%)4641(Top 41%)4641(Top 95%)
15K9.32 mi3.11 mi14883+3974587+2344587+23414039(Top 53%)4108(Top 36%)4108(Top 84%)
20K12.43 mi3.11 mi14493+3904366+2214366+22113422(Top 50%)3776(Top 33%)3776(Top 77%)
Half13.11 mi0.68 mi14463+304354+124354+1213740(Top 52%)3927(Top 34%)3927(Top 80%)
25K15.53 mi2.42 mi14107+3564177+1774177+17712422(Top 47%)3322(Top 29%)3322(Top 68%)
30K18.64 mi3.11 mi13865+2424055+1224055+12212890(Top 48%)3688(Top 32%)3688(Top 76%)
20M20.00 mi1.36 mi13700+1653978+773978+7712075(Top 45%)3323(Top 29%)3323(Top 68%)
21M21.00 mi1.00 mi13542+1583903+753903+7511591(Top 44%)3196(Top 28%)3196(Top 65%)
35K21.75 mi0.75 mi13486+563876+273876+2712325(Top 46%)3616(Top 32%)3616(Top 74%)
23M23.00 mi1.25 mi13386+1003845+313845+3112514(Top 47%)3804(Top 33%)3804(Top 78%)
24M24.00 mi1.00 mi13324+623831+143831+1412627(Top 47%)3927(Top 34%)3927(Top 80%)
40K24.85 mi0.85 mi13256+683810+213810+2112108(Top 45%)3733(Top 33%)3733(Top 76%)
25.2M25.20 mi0.35 mi13189+673790+203790+2010552(Top 40%)2978(Top 26%)2978(Top 61%)
Finish26.22 mi1.02 mi13120+693768+223768+2211657(Top 44%)3528(Top 31%)3528(Top 72%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21story building
+97ft-345ft

Overall

14039

Females

4108

F18-39

4108

5K→10K

3.1 - 6.2 mi

Top 56%
×5story building
+79ft-138ft

Overall

14954

Females

4641

F18-39

4641

10K→15K

6.2 - 9.3 mi

Top 53%
×3story building
+67ft-78ft

Overall

14039

Females

4108

F18-39

4108

15K→20K

9.3 - 12.4 mi

Top 50%
×5story building
+106ft-86ft

Overall

13422

Females

3776

F18-39

3776

20K→Half

12.4 - 13.1 mi

Top 52%
×2story building
+19ft-37ft

Overall

13740

Females

3927

F18-39

3927

Half→25K

13.1 - 15.5 mi

Top 47%
×4story building
+66ft-88ft

Overall

12422

Females

3322

F18-39

3322

25K→30K

15.5 - 18.6 mi

Top 48%
×9story building
+181ft-148ft

Overall

12890

Females

3688

F18-39

3688

30K→20M

18.6 - 20.0 mi

Top 45%
×5story building
+64ft-50ft

Overall

12075

Females

3323

F18-39

3323

20M→21M

20.0 - 21.0 mi

Top 44%
×8story building
+106ft-24ft

Overall

11591

Females

3196

F18-39

3196

21M→35K

21.0 - 21.8 mi

Top 46%
×7story building
+17ft-86ft

Overall

12325

Females

3616

F18-39

3616

35K→23M

21.8 - 23.0 mi

Top 47%
×5story building
+23ft-63ft

Overall

12514

Females

3804

F18-39

3804

23M→24M

23.0 - 24.0 mi

Top 47%
×6story building
+12ft-82ft

Overall

12627

Females

3927

F18-39

3927

24M→40K

24.0 - 24.9 mi

Top 45%
×1story
+6ft-20ft

Overall

12108

Females

3733

F18-39

3733

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1story
+13ft-16ft

Overall

10552

Females

2978

F18-39

2978

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2story building
+22ft-21ft

Overall

11657

Females

3528

F18-39

3528

Passing Analysis

Category:
Athletes Passed
3104
Passed By
562
Net Change
+2542
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15662
5K → 10K537155+382#15662#15280
10K → 15K44245+397#15280#14883
15K → 20K42838+390#14883#14493
20K → Half5020+30#14493#14463
Half → 25K37014+356#14463#14107
25K → 30K32381+242#14107#13865
30K → 20M18318+165#13865#13700
20M → 21M17820+158#13700#13542
21M → 35K8529+56#13542#13486
35K → 23M14444+100#13486#13386
23M → 24M9937+62#13386#13324
24M → 40K9426+68#13324#13256
40K → 25.2M736+67#13256#13189
25.2M → Finish9829+69#13189#13120
TOTALS3104562+2542
📊

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing