Boston Marathon logo
BOSTON MARATHON 2023

Laura Walsh

Bib: 16754•F

NY

0:00
0:00
/ mi
Be the first to cheer!
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
23:46
Rank: #11028
Start → 5K
23:46 | 7:39/mi
10K· 6.21 mi
47:16
Rank: #10976 (+52)
5K → 10K
23:30 | 7:34/mi
15K· 9.32 mi
1:10:48
Rank: #10901 (+75)
10K → 15K
23:32 | 7:34/mi
20K· 12.43 mi
1:34:24
Rank: #10680 (+221)
15K → 20K
23:36 | 7:36/mi
Half· 13.11 mi
1:39:32
Rank: #10668 (+12)
20K → Half
5:08 | 7:31/mi
25K· 15.53 mi
1:58:07
Rank: #10512 (+156)
Half → 25K
18:35 | 7:40/mi
30K· 18.64 mi
2:22:18
Rank: #10238 (+274)
25K → 30K
24:11 | 7:47/mi
20M
2:33:27
Rank: #10342 (-104)
30K → 20M
11:09 | 8:13/mi
21M
2:41:40
Rank: #10206 (+136)
20M → 21M
8:13 | 8:13/mi
35K· 21.75 mi
2:47:19
Rank: #10146 (+60)
21M → 35K
5:39 | 7:33/mi
23M
2:57:22
Rank: #10109 (+37)
35K → 23M
10:03 | 8:02/mi
24M
3:05:01
Rank: #10019 (+90)
23M → 24M
7:39 | 7:39/mi
40K· 24.85 mi
3:11:43
Rank: #9949 (+70)
24M → 40K
6:42 | 7:50/mi
25.2M
3:14:39
Rank: #9918 (+31)
40K → 25.2M
2:56 | 8:30/mi
Finish· 26.22 mi
3:22:30
Rank: #9887 (+31)
25.2M → Finish
7:51 | 7:42/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
Time1:39:32
Pace7:36 /mi
2nd Half
Distance13.11 mi
Time1:42:58
Pace7:51 /mi
📊Positive Split: 3.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:2323:467:3923:46
7:39
-
10K
6.21 mi11:37:5347:167:3623:30
7:34
-0:05
15K
9.32 mi12:01:251:10:487:3623:32
7:34
0:00
20K
12.43 mi12:25:011:34:247:3623:36
7:36
+0:02
Half
13.11 mi12:30:091:39:327:365:08
7:31
-0:05
25K
15.53 mi12:48:441:58:077:3618:35
7:40
+0:09
30K
18.64 mi13:12:552:22:187:3824:11
7:47
+0:07
20M
20.00 mi13:24:042:33:277:4011:09
8:13
+0:26
21M
21.00 mi13:32:172:41:407:428:13
8:13
0:00
35K
21.75 mi13:37:562:47:197:425:39
7:33
-0:40
23M
23.00 mi13:47:592:57:227:4310:03
8:02
+0:29
24M
24.00 mi13:55:383:05:017:437:39
7:39
-0:23
40K
24.85 mi14:02:203:11:437:436:42
7:50
+0:11
25.2M
25.20 mi14:05:163:14:397:432:56
8:30
+0:40
Finish
26.22 mi14:13:073:22:307:447:51
7:42
-0:48

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

7:31 /mi

Average Pace

7:44 /mi

Slowest Pace

8:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:19:34

99% of race

Time at Steady Pace

2:56

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:43 /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 mi11:14:2323:467:3923:46
7:39
#11028
10K
6.21 mi11:37:5347:167:3623:30
7:34
#10976
15K
9.32 mi12:01:251:10:487:3623:32
7:34
#10901
20K
12.43 mi12:25:011:34:247:3623:36
7:36
#10680
Half
13.11 mi12:30:091:39:327:365:08
7:31
#10668
25K
15.53 mi12:48:441:58:077:3618:35
7:40
#10512
30K
18.64 mi13:12:552:22:187:3824:11
7:47
#10238
20M
20.00 mi13:24:042:33:277:4011:09
8:13
#10342
21M
21.00 mi13:32:172:41:407:428:13
8:13
#10206
35K
21.75 mi13:37:562:47:197:425:39
7:33
#10146
23M
23.00 mi13:47:592:57:227:4310:03
8:02
#10109
24M
24.00 mi13:55:383:05:017:437:39
7:39
#10019
40K
24.85 mi14:02:203:11:437:436:42
7:50
#9949
25.2M
25.20 mi14:05:163:14:397:432:56
8:30
#9918
Finish
26.22 mi14:13:073:22:307:447:51
7:42
#9887
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi110282341234110802(Top 41%)2232(Top 20%)2232(Top 46%)
10K6.21 mi3.10 mi10976+522312+292312+2911006(Top 41%)2310(Top 20%)2310(Top 47%)
15K9.32 mi3.11 mi10901+752281+312281+3110802(Top 41%)2232(Top 20%)2232(Top 46%)
20K12.43 mi3.11 mi10680+2212175+1062175+10610077(Top 38%)1950(Top 17%)1950(Top 40%)
Half13.11 mi0.68 mi10668+122165+102165+1010461(Top 39%)2116(Top 19%)2116(Top 43%)
25K15.53 mi2.42 mi10512+1562100+652100+6510044(Top 38%)2020(Top 18%)2020(Top 41%)
30K18.64 mi3.11 mi10238+2742015+852015+859246(Top 35%)1818(Top 16%)1818(Top 37%)
20M20.00 mi1.36 mi10342-1042088-732088-7311774(Top 44%)3157(Top 28%)3157(Top 65%)
21M21.00 mi1.00 mi10206+1362047+412047+418660(Top 33%)1785(Top 16%)1785(Top 37%)
35K21.75 mi0.75 mi10146+602031+162031+168971(Top 34%)1908(Top 17%)1908(Top 39%)
23M23.00 mi1.25 mi10109+372050-192050-199951(Top 37%)2483(Top 22%)2483(Top 51%)
24M24.00 mi1.00 mi10019+902046+42046+48786(Top 33%)1998(Top 17%)1998(Top 41%)
40K24.85 mi0.85 mi9949+702038+82038+88931(Top 34%)2147(Top 19%)2147(Top 44%)
25.2M25.20 mi0.35 mi9918+31203820389621(Top 36%)2504(Top 22%)2504(Top 51%)
Finish26.22 mi1.02 mi9887+312044-62044-610016(Top 38%)2703(Top 24%)2703(Top 55%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21stories
+97ft-345ft

Overall

10802

Females

2232

F18-39

2232

5K→10K

3.1 - 6.2 mi

Top 41%
×5stories
+79ft-138ft

Overall

11006

Females

2310

F18-39

2310

10K→15K

6.2 - 9.3 mi

Top 41%
×3stories
+67ft-78ft

Overall

10802

Females

2232

F18-39

2232

15K→20K

9.3 - 12.4 mi

Top 38%
×5stories
+106ft-86ft

Overall

10077

Females

1950

F18-39

1950

20K→Half

12.4 - 13.1 mi

Top 39%
×2stories
+19ft-37ft

Overall

10461

Females

2116

F18-39

2116

Half→25K

13.1 - 15.5 mi

Top 38%
×4stories
+66ft-88ft

Overall

10044

Females

2020

F18-39

2020

25K→30K

15.5 - 18.6 mi

Top 35%
×9stories
+181ft-148ft

Overall

9246

Females

1818

F18-39

1818

30K→20M

18.6 - 20.0 mi

Top 44%
×5stories
+64ft-50ft

Overall

11774

Females

3157

F18-39

3157

20M→21M

20.0 - 21.0 mi

Top 33%
×8stories
+106ft-24ft

Overall

8660

Females

1785

F18-39

1785

21M→35K

21.0 - 21.8 mi

Top 34%
×7stories
+17ft-86ft

Overall

8971

Females

1908

F18-39

1908

35K→23M

21.8 - 23.0 mi

Top 37%
×5stories
+23ft-63ft

Overall

9951

Females

2483

F18-39

2483

23M→24M

23.0 - 24.0 mi

Top 33%
×6stories
+12ft-82ft

Overall

8786

Females

1998

F18-39

1998

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

8931

Females

2147

F18-39

2147

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

9621

Females

2504

F18-39

2504

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2stories
+22ft-21ft

Overall

10016

Females

2703

F18-39

2703

Passing Analysis

Category:
Athletes Passed
2123*
Passed By
981
Net Change
+1141
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11028
5K → 10K329277+52#11028#10976
10K → 15K216141+75#10976#10901
15K → 20K28766+221#10901#10680
20K → Half3725+12#10680#10668
Half → 25K20145+156#10668#10512
25K → 30K314*40+274#10512#10238
30K → 20M45*149-104#10238#10342
20M → 21M16024+136#10342#10206
21M → 35K7717+60#10206#10146
35K → 23M10366+37#10146#10109
23M → 24M11625+90#10109#10019
24M → 40K99*29+70#10019#9949
40K → 25.2M4817+31#9949#9918
25.2M → Finish91*60+31#9918#9887
TOTALS2123*981+1141

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

📊

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