Boston Marathon logo
BOSTON MARATHON 2023

Noriko Charnley

Bib: 17346•F

NJ

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 38%
Gender (Female)
#0 / 11423
Top 19%
Masters (Masters Women)
#0 / 6539
Top 8%
Division (F55-59)
#0 / 815
Top 2%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:44
Rank: #10929
Start → 5K
23:44 | 7:38/mi
10K· 6.21 mi
47:09
Rank: #10825 (+104)
5K → 10K
23:25 | 7:32/mi
15K· 9.32 mi
1:10:36
Rank: #10710 (+115)
10K → 15K
23:27 | 7:33/mi
20K· 12.43 mi
1:34:11
Rank: #10511 (+199)
15K → 20K
23:35 | 7:35/mi
Half· 13.11 mi
1:39:15
Rank: #10472 (+39)
20K → Half
5:04 | 7:26/mi
25K· 15.53 mi
1:57:26
Rank: #10142 (+330)
Half → 25K
18:11 | 7:30/mi
30K· 18.64 mi
2:21:50
Rank: #10037 (+105)
25K → 30K
24:24 | 7:51/mi
20M
2:32:45
Rank: #10052 (-15)
30K → 20M
10:55 | 8:02/mi
21M
2:41:35
Rank: #10171 (-119)
20M → 21M
8:50 | 8:50/mi
35K· 21.75 mi
2:47:21
Rank: #10152 (+19)
21M → 35K
5:46 | 7:42/mi
23M
2:57:28
Rank: #10144 (+8)
35K → 23M
10:07 | 8:05/mi
24M
3:05:19
Rank: #10121 (+23)
23M → 24M
7:51 | 7:51/mi
40K· 24.85 mi
3:12:07
Rank: #10073 (+48)
24M → 40K
6:48 | 7:57/mi
25.2M
3:15:08
Rank: #10073
40K → 25.2M
3:01 | 8:45/mi
Finish· 26.22 mi
3:23:14
Rank: #10121 (-48)
25.2M → Finish
8:06 | 7:57/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
Time1:39:15
Pace7:34 /mi
2nd Half
Distance13.11 mi
Time1:43:59
Pace7:56 /mi
📊Positive Split: 4.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:1423:447:3823:44
7:38
-
10K
6.21 mi11:37:3947:097:3523:25
7:32
-0:06
15K
9.32 mi12:01:061:10:367:3423:27
7:33
+0:01
20K
12.43 mi12:24:411:34:117:3523:35
7:35
+0:02
Half
13.11 mi12:29:451:39:157:345:04
7:26
-0:09
25K
15.53 mi12:47:561:57:267:3418:11
7:30
+0:04
30K
18.64 mi13:12:202:21:507:3724:24
7:51
+0:21
20M
20.00 mi13:23:152:32:457:3810:55
8:02
+0:11
21M
21.00 mi13:32:052:41:357:428:50
8:50
+0:48
35K
21.75 mi13:37:512:47:217:425:46
7:42
-1:08
23M
23.00 mi13:47:582:57:287:4310:07
8:05
+0:23
24M
24.00 mi13:55:493:05:197:437:51
7:51
-0:14
40K
24.85 mi14:02:373:12:077:446:48
7:57
+0:06
25.2M
25.20 mi14:05:383:15:087:453:01
8:45
+0:48
Finish
26.22 mi14:13:443:23:147:458:06
7:57
-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

7:26 /mi

Average Pace

7:45 /mi

Slowest Pace

8:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:11:23

94% of race

Time at Steady Pace

3:01

1% of race

Time at Slower Pace

8:50

4% of race

Average Pace: 7:45 /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 mi11:14:1423:447:3823:44
7:38
#10929
10K
6.21 mi11:37:3947:097:3523:25
7:32
#10825
15K
9.32 mi12:01:061:10:367:3423:27
7:33
#10710
20K
12.43 mi12:24:411:34:117:3523:35
7:35
#10511
Half
13.11 mi12:29:451:39:157:345:04
7:26
#10472
25K
15.53 mi12:47:561:57:267:3418:11
7:30
#10142
30K
18.64 mi13:12:202:21:507:3724:24
7:51
#10037
20M
20.00 mi13:23:152:32:457:3810:55
8:02
#10052
21M
21.00 mi13:32:052:41:357:428:50
8:50
#10171
35K
21.75 mi13:37:512:47:217:425:46
7:42
#10152
23M
23.00 mi13:47:582:57:287:4310:07
8:05
#10144
24M
24.00 mi13:55:493:05:197:437:51
7:51
#10121
40K
24.85 mi14:02:373:12:077:446:48
7:57
#10073
25.2M
25.20 mi14:05:383:15:087:453:01
8:45
#10073
Finish
26.22 mi14:13:443:23:147:458:06
7:57
#10121
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi109292295229510568(Top 40%)2119(Top 19%)2119(Top 260%)
10K6.21 mi3.10 mi10825+1042237+582237+5810794(Top 41%)2200(Top 19%)2200(Top 270%)
15K9.32 mi3.11 mi10710+1152173+642173+6410568(Top 40%)2119(Top 19%)2119(Top 260%)
20K12.43 mi3.11 mi10511+1992075+982075+9810035(Top 38%)1932(Top 17%)1932(Top 237%)
Half13.11 mi0.68 mi10472+392058+172058+179694(Top 36%)1765(Top 15%)1765(Top 217%)
25K15.53 mi2.42 mi10142+3301923+1351923+1358809(Top 33%)1488(Top 13%)1488(Top 183%)
30K18.64 mi3.11 mi10037+1051908+151908+159780(Top 37%)2057(Top 18%)2057(Top 252%)
20M20.00 mi1.36 mi10052-151947-391947-3910526(Top 40%)2493(Top 22%)2493(Top 306%)
21M21.00 mi1.00 mi10171-1192029-822029-8212453(Top 47%)3652(Top 32%)3652(Top 448%)
35K21.75 mi0.75 mi10152+192033-42033-410026(Top 38%)2364(Top 21%)2364(Top 290%)
23M23.00 mi1.25 mi10144+82071-382071-3810321(Top 39%)2665(Top 23%)2665(Top 327%)
24M24.00 mi1.00 mi10121+232084-132084-1310178(Top 38%)2671(Top 23%)2671(Top 328%)
40K24.85 mi0.85 mi10073+482095-112095-119754(Top 37%)2530(Top 22%)2530(Top 310%)
25.2M25.20 mi0.35 mi100732107-122107-1211044(Top 41%)3202(Top 28%)3202(Top 393%)
Finish26.22 mi1.02 mi10121-482155-482155-4811742(Top 44%)3562(Top 31%)3562(Top 437%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21stories
+97ft-345ft

Overall

10568

Females

2119

F55-59

2119

5K→10K

3.1 - 6.2 mi

Top 41%
×5stories
+79ft-138ft

Overall

10794

Females

2200

F55-59

2200

10K→15K

6.2 - 9.3 mi

Top 40%
×3stories
+67ft-78ft

Overall

10568

Females

2119

F55-59

2119

15K→20K

9.3 - 12.4 mi

Top 38%
×5stories
+106ft-86ft

Overall

10035

Females

1932

F55-59

1932

20K→Half

12.4 - 13.1 mi

Top 36%
×2stories
+19ft-37ft

Overall

9694

Females

1765

F55-59

1765

Half→25K

13.1 - 15.5 mi

Top 33%
×4stories
+66ft-88ft

Overall

8809

Females

1488

F55-59

1488

25K→30K

15.5 - 18.6 mi

Top 37%
×9stories
+181ft-148ft

Overall

9780

Females

2057

F55-59

2057

30K→20M

18.6 - 20.0 mi

Top 40%
×5stories
+64ft-50ft

Overall

10526

Females

2493

F55-59

2493

20M→21M

20.0 - 21.0 mi

Top 47%
×8stories
+106ft-24ft

Overall

12453

Females

3652

F55-59

3652

21M→35K

21.0 - 21.8 mi

Top 38%
×7stories
+17ft-86ft

Overall

10026

Females

2364

F55-59

2364

35K→23M

21.8 - 23.0 mi

Top 39%
×5stories
+23ft-63ft

Overall

10321

Females

2665

F55-59

2665

23M→24M

23.0 - 24.0 mi

Top 38%
×6stories
+12ft-82ft

Overall

10178

Females

2671

F55-59

2671

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

9754

Females

2530

F55-59

2530

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

11044

Females

3202

F55-59

3202

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2stories
+22ft-21ft

Overall

11742

Females

3562

F55-59

3562

Passing Analysis

Category:
Athletes Passed
2003*
Passed By
1195
Net Change
+808
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10929
5K → 10K345241+104#10929#10825
10K → 15K244129+115#10825#10710
15K → 20K27172+199#10710#10511
20K → Half5819+39#10511#10472
Half → 25K34313+330#10472#10142
25K → 30K212*107+105#10142#10037
30K → 20M86101-15#10037#10052
20M → 21M51170-119#10052#10171
21M → 35K4930+19#10171#10152
35K → 23M9385+8#10152#10144
23M → 24M7552+23#10144#10121
24M → 40K8739+48#10121#10073
40K → 25.2M36*360#10073#10073
25.2M → Finish53101-48#10073#10121
TOTALS2003*1195+808

* 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