Boston Marathon logo
BOSTON MARATHON 2023

Marie-Josée Nadeau

Bib: 17829•F

QC

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 41%
Gender (Female)
#0 / 11423
Top 22%
Masters (Masters Women)
#0 / 6539
Top 10%
Division (F40-44)
#0 / 1878
Top 21%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:50
Rank: #11208
Start → 5K
23:50 | 7:40/mi
10K· 6.21 mi
46:58
Rank: #10560 (+648)
5K → 10K
23:08 | 7:27/mi
15K· 9.32 mi
1:10:14
Rank: #10390 (+170)
10K → 15K
23:16 | 7:29/mi
20K· 12.43 mi
1:33:55
Rank: #10330 (+60)
15K → 20K
23:41 | 7:37/mi
Half· 13.11 mi
1:39:02
Rank: #10318 (+12)
20K → Half
5:07 | 7:30/mi
25K· 15.53 mi
1:57:51
Rank: #10368 (-50)
Half → 25K
18:49 | 7:46/mi
30K· 18.64 mi
2:22:52
Rank: #10474 (-106)
25K → 30K
25:01 | 8:03/mi
20M
2:34:07
Rank: #10605 (-131)
30K → 20M
11:15 | 8:17/mi
21M
2:43:00
Rank: #10710 (-105)
20M → 21M
8:53 | 8:53/mi
35K· 21.75 mi
2:48:48
Rank: #10671 (+39)
21M → 35K
5:48 | 7:45/mi
23M
2:59:09
Rank: #10718 (-47)
35K → 23M
10:21 | 8:16/mi
24M
3:07:19
Rank: #10774 (-56)
23M → 24M
8:10 | 8:10/mi
40K· 24.85 mi
3:14:25
Rank: #10809 (-35)
24M → 40K
7:06 | 8:18/mi
25.2M
3:17:35
Rank: #10862 (-53)
40K → 25.2M
3:10 | 9:11/mi
Finish· 26.22 mi
3:25:40
Rank: #10878 (-16)
25.2M → Finish
8:05 | 7:56/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
Time1:39:02
Pace7:33 /mi
2nd Half
Distance13.11 mi
Time1:46:38
Pace8:08 /mi
📊Positive Split: 7.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:2423:507:4023:50
7:40
-
10K
6.21 mi11:37:3246:587:3423:08
7:27
-0:13
15K
9.32 mi12:00:481:10:147:3223:16
7:29
+0:02
20K
12.43 mi12:24:291:33:557:3323:41
7:37
+0:08
Half
13.11 mi12:29:361:39:027:335:07
7:30
-0:07
25K
15.53 mi12:48:251:57:517:3518:49
7:46
+0:16
30K
18.64 mi13:13:262:22:527:4025:01
8:03
+0:17
20M
20.00 mi13:24:412:34:077:4211:15
8:17
+0:14
21M
21.00 mi13:33:342:43:007:468:53
8:53
+0:36
35K
21.75 mi13:39:222:48:487:465:48
7:45
-1:08
23M
23.00 mi13:49:432:59:097:4710:21
8:16
+0:31
24M
24.00 mi13:57:533:07:197:488:10
8:10
-0:06
40K
24.85 mi14:04:593:14:257:497:06
8:18
+0:08
25.2M
25.20 mi14:08:093:17:357:503:10
9:11
+0:53
Finish
26.22 mi14:16:143:25:407:518:05
7:56
-1:15

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

7:27 /mi

Average Pace

7:51 /mi

Slowest Pace

9:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:02

48% of race

Time at Steady Pace

1:05:53

32% of race

Time at Slower Pace

40:45

20% of race

Average Pace: 7:51 /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 mi11:14:2423:507:4023:50
7:40
#11208
10K
6.21 mi11:37:3246:587:3423:08
7:27
#10560
15K
9.32 mi12:00:481:10:147:3223:16
7:29
#10390
20K
12.43 mi12:24:291:33:557:3323:41
7:37
#10330
Half
13.11 mi12:29:361:39:027:335:07
7:30
#10318
25K
15.53 mi12:48:251:57:517:3518:49
7:46
#10368
30K
18.64 mi13:13:262:22:527:4025:01
8:03
#10474
20M
20.00 mi13:24:412:34:077:4211:15
8:17
#10605
21M
21.00 mi13:33:342:43:007:468:53
8:53
#10710
35K
21.75 mi13:39:222:48:487:465:48
7:45
#10671
23M
23.00 mi13:49:432:59:097:4710:21
8:16
#10718
24M
24.00 mi13:57:533:07:197:488:10
8:10
#10774
40K
24.85 mi14:04:593:14:257:497:06
8:18
#10809
25.2M
25.20 mi14:08:093:17:357:503:10
9:11
#10862
Finish
26.22 mi14:16:143:25:407:518:05
7:56
#10878
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi112082439243910107(Top 38%)1894(Top 17%)1894(Top 101%)
10K6.21 mi3.10 mi10560+6482103+3362103+33610049(Top 38%)1851(Top 16%)1851(Top 99%)
15K9.32 mi3.11 mi10390+1702009+942009+9410107(Top 38%)1894(Top 17%)1894(Top 101%)
20K12.43 mi3.11 mi10330+601992+171992+1710278(Top 39%)2039(Top 18%)2039(Top 109%)
Half13.11 mi0.68 mi10318+121985+71985+710309(Top 39%)2042(Top 18%)2042(Top 109%)
25K15.53 mi2.42 mi10368-502028-432028-4310810(Top 41%)2395(Top 21%)2395(Top 128%)
30K18.64 mi3.11 mi10474-1062140-1122140-11211324(Top 43%)2799(Top 25%)2799(Top 149%)
20M20.00 mi1.36 mi10605-1312227-872227-8712215(Top 46%)3397(Top 30%)3397(Top 181%)
21M21.00 mi1.00 mi10710-1052306-792306-7912761(Top 48%)3812(Top 33%)3812(Top 203%)
35K21.75 mi0.75 mi10671+392310-42310-410335(Top 39%)2524(Top 22%)2524(Top 134%)
23M23.00 mi1.25 mi10718-472369-592369-5911650(Top 44%)3324(Top 29%)3324(Top 177%)
24M24.00 mi1.00 mi10774-562407-382407-3812386(Top 47%)3783(Top 33%)3783(Top 201%)
40K24.85 mi0.85 mi10809-352455-482455-4812078(Top 45%)3703(Top 32%)3703(Top 197%)
25.2M25.20 mi0.35 mi10862-532500-452500-4513565(Top 51%)4502(Top 39%)4502(Top 240%)
Finish26.22 mi1.02 mi10878-162534-342534-3411636(Top 44%)3507(Top 31%)3507(Top 187%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21stories
+97ft-345ft

Overall

10107

Females

1894

F40-44

1894

5K→10K

3.1 - 6.2 mi

Top 38%
×5stories
+79ft-138ft

Overall

10049

Females

1851

F40-44

1851

10K→15K

6.2 - 9.3 mi

Top 38%
×3stories
+67ft-78ft

Overall

10107

Females

1894

F40-44

1894

15K→20K

9.3 - 12.4 mi

Top 39%
×5stories
+106ft-86ft

Overall

10278

Females

2039

F40-44

2039

20K→Half

12.4 - 13.1 mi

Top 39%
×2stories
+19ft-37ft

Overall

10309

Females

2042

F40-44

2042

Half→25K

13.1 - 15.5 mi

Top 41%
×4stories
+66ft-88ft

Overall

10810

Females

2395

F40-44

2395

25K→30K

15.5 - 18.6 mi

Top 43%
×9stories
+181ft-148ft

Overall

11324

Females

2799

F40-44

2799

30K→20M

18.6 - 20.0 mi

Top 46%
×5stories
+64ft-50ft

Overall

12215

Females

3397

F40-44

3397

20M→21M

20.0 - 21.0 mi

Top 48%
×8stories
+106ft-24ft

Overall

12761

Females

3812

F40-44

3812

21M→35K

21.0 - 21.8 mi

Top 39%
×7stories
+17ft-86ft

Overall

10335

Females

2524

F40-44

2524

35K→23M

21.8 - 23.0 mi

Top 44%
×5stories
+23ft-63ft

Overall

11650

Females

3324

F40-44

3324

23M→24M

23.0 - 24.0 mi

Top 47%
×6stories
+12ft-82ft

Overall

12386

Females

3783

F40-44

3783

24M→40K

24.0 - 24.9 mi

Top 45%
×1story
+6ft-20ft

Overall

12078

Females

3703

F40-44

3703

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

13565

Females

4502

F40-44

4502

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2stories
+22ft-21ft

Overall

11636

Females

3507

F40-44

3507

Passing Analysis

Category:
Athletes Passed
1904*
Passed By
1574
Net Change
+330
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11208
5K → 10K727*79+648#11208#10560
10K → 15K295125+170#10560#10390
15K → 20K180*120+60#10390#10330
20K → Half3119+12#10330#10318
Half → 25K128178-50#10318#10368
25K → 30K134240-106#10368#10474
30K → 20M39*170-131#10474#10605
20M → 21M44149-105#10605#10710
21M → 35K7334+39#10710#10671
35K → 23M72119-47#10671#10718
23M → 24M45101-56#10718#10774
24M → 40K5590-35#10774#10809
40K → 25.2M2275-53#10809#10862
25.2M → Finish5975-16#10862#10878
TOTALS1904*1574+330

* 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