Boston Marathon logo
BOSTON MARATHON 2023

Karen Ngui

Bib: 27325•F

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F60-64)
#0 / 527
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
10:51/mi
33:44
↑ 97↓ 3451.5%
10K· 6.21 mi
10:47/mi
1:07:14
↑ 79↓ 1380.4%
15K· 9.32 mi
11:02/mi
1:41:31
↑ 67↓ 78
20K· 12.43 mi
11:25/mi
2:16:58
↑ 106↓ 860.1%
Half· 13.11 mi
11:01/mi
2:24:29
↑ 19↓ 370.5%
25K· 15.53 mi
11:38/mi
2:52:41
↑ 66↓ 880.2%
30K· 18.64 mi
11:59/mi
3:29:55
↑ 181↓ 1480.2%
20M
11:35/mi
3:45:39
↑ 64↓ 500.2%
21M
12:28/mi
3:58:07
↑ 106↓ 241.6%
35K· 21.75 mi
11:18/mi
4:06:34
↑ 17↓ 861.7%
23M
11:34/mi
4:21:03
↑ 23↓ 630.6%
24M
11:07/mi
4:32:10
↓ 821.3%
40K· 24.85 mi
11:16/mi
4:41:48
↓ 200.3%
25.2M
11:59/mi
4:45:56
↑ 13↓ 160.2%
Finish· 26.22 mi
10:38/mi
4:56:46
↑ 22↓ 21

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
Time2:24:29
Pace11:01 /mi
2nd Half
Distance13.11 mi
Time2:32:17
Pace11:37 /mi
📊Positive Split: 5.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:1933:4410:5133:44
10:51
-
10K
6.21 mi12:24:491:07:1410:4933:30
10:47
-0:04
15K
9.32 mi12:59:061:41:3110:5434:17
11:02
+0:15
20K
12.43 mi13:34:332:16:5811:0135:27
11:25
+0:23
Half
13.11 mi13:42:042:24:2911:017:31
11:01
-0:24
25K
15.53 mi14:10:162:52:4111:0728:12
11:38
+0:37
30K
18.64 mi14:47:303:29:5511:1637:14
11:59
+0:21
20M
20.00 mi15:03:143:45:3911:1715:44
11:35
-0:24
21M
21.00 mi15:15:423:58:0711:2012:28
12:28
+0:53
35K
21.75 mi15:24:094:06:3411:208:27
11:18
-1:10
23M
23.00 mi15:38:384:21:0311:2114:29
11:34
+0:16
24M
24.00 mi15:49:454:32:1011:2011:07
11:07
-0:27
40K
24.85 mi15:59:234:41:4811:209:38
11:16
+0:09
25.2M
25.20 mi16:03:314:45:5611:214:08
11:59
+0:43
Finish
26.22 mi16:14:214:56:4611:2010:50
10:38
-1:21

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

10:38 /mi

Average Pace

11:20 /mi

Slowest Pace

12:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

4:02:56

82% of race

Time at Steady Pace

53:50

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 11:19 /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 mi11:51:1933:4410:5133:44
10:51
#25467
10K
6.21 mi12:24:491:07:1410:4933:30
10:47
#25304
15K
9.32 mi12:59:061:41:3110:5434:17
11:02
#25289
20K
12.43 mi13:34:332:16:5811:0135:27
11:25
#25255
Half
13.11 mi13:42:042:24:2911:017:31
11:01
#25244
25K
15.53 mi14:10:162:52:4111:0728:12
11:38
#25175
30K
18.64 mi14:47:303:29:5511:1637:14
11:59
#25046
20M
20.00 mi15:03:143:45:3911:1715:44
11:35
#24961
21M
21.00 mi15:15:423:58:0711:2012:28
12:28
#24871
35K
21.75 mi15:24:094:06:3411:208:27
11:18
#24838
23M
23.00 mi15:38:384:21:0311:2114:29
11:34
#24783
24M
24.00 mi15:49:454:32:1011:2011:07
11:07
#24732
40K
24.85 mi15:59:234:41:4811:209:38
11:16
#24660
25.2M
25.20 mi16:03:314:45:5611:214:08
11:59
#24640
Finish
26.22 mi16:14:214:56:4611:2010:50
10:38
#24617
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi25467107051070525230(Top 95%)10585(Top 93%)10585(Top 2009%)
10K6.21 mi3.10 mi25304+16310600+10510600+10525147(Top 94%)10522(Top 92%)10522(Top 1997%)
15K9.32 mi3.11 mi25289+1510607-710607-725230(Top 95%)10585(Top 93%)10585(Top 2009%)
20K12.43 mi3.11 mi25255+3410599+810599+825143(Top 94%)10569(Top 93%)10569(Top 2006%)
Half13.11 mi0.68 mi25244+1110595+410595+424969(Top 94%)10481(Top 92%)10481(Top 1989%)
25K15.53 mi2.42 mi25175+6910570+2510570+2524831(Top 93%)10416(Top 91%)10416(Top 1976%)
30K18.64 mi3.11 mi25046+12910512+5810512+5824479(Top 92%)10265(Top 90%)10265(Top 1948%)
20M20.00 mi1.36 mi24961+8510474+3810474+3823645(Top 89%)9866(Top 86%)9866(Top 1872%)
21M21.00 mi1.00 mi24871+9010432+4210432+4223423(Top 88%)9774(Top 86%)9774(Top 1855%)
35K21.75 mi0.75 mi24838+3310419+1310419+1323805(Top 89%)10043(Top 88%)10043(Top 1906%)
23M23.00 mi1.25 mi24783+5510397+2210397+2223379(Top 88%)9795(Top 86%)9795(Top 1859%)
24M24.00 mi1.00 mi24732+5110376+2110376+2123279(Top 87%)9791(Top 86%)9791(Top 1858%)
40K24.85 mi0.85 mi24660+7210343+3310343+3322860(Top 86%)9595(Top 84%)9595(Top 1821%)
25.2M25.20 mi0.35 mi24640+2010335+810335+822519(Top 85%)9419(Top 82%)9419(Top 1787%)
Finish26.22 mi1.02 mi24617+2310323+1210323+1223298(Top 88%)9805(Top 86%)9805(Top 1861%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 95%
×21story building
+97ft-345ft

Overall

25230

Females

10585

F60-64

10585

5K→10K

3.1 - 6.2 mi

Top 94%
×5story building
+79ft-138ft

Overall

25147

Females

10522

F60-64

10522

10K→15K

6.2 - 9.3 mi

Top 95%
×3story building
+67ft-78ft

Overall

25230

Females

10585

F60-64

10585

15K→20K

9.3 - 12.4 mi

Top 94%
×5story building
+106ft-86ft

Overall

25143

Females

10569

F60-64

10569

20K→Half

12.4 - 13.1 mi

Top 94%
×2story building
+19ft-37ft

Overall

24969

Females

10481

F60-64

10481

Half→25K

13.1 - 15.5 mi

Top 93%
×4story building
+66ft-88ft

Overall

24831

Females

10416

F60-64

10416

25K→30K

15.5 - 18.6 mi

Top 92%
×9story building
+181ft-148ft

Overall

24479

Females

10265

F60-64

10265

30K→20M

18.6 - 20.0 mi

Top 89%
×5story building
+64ft-50ft

Overall

23645

Females

9866

F60-64

9866

20M→21M

20.0 - 21.0 mi

Top 88%
×8story building
+106ft-24ft

Overall

23423

Females

9774

F60-64

9774

21M→35K

21.0 - 21.8 mi

Top 89%
×7story building
+17ft-86ft

Overall

23805

Females

10043

F60-64

10043

35K→23M

21.8 - 23.0 mi

Top 88%
×5story building
+23ft-63ft

Overall

23379

Females

9795

F60-64

9795

23M→24M

23.0 - 24.0 mi

Top 87%
×6story building
+12ft-82ft

Overall

23279

Females

9791

F60-64

9791

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

22860

Females

9595

F60-64

9595

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

22519

Females

9419

F60-64

9419

25.2M→Finish

25.2 - 26.2 mi

Top 88%
×2story building
+22ft-21ft

Overall

23298

Females

9805

F60-64

9805

Passing Analysis

Category:
Athletes Passed
1241
Passed By
391
Net Change
+850
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25467
5K → 10K25592+163#25467#25304
10K → 15K11196+15#25304#25289
15K → 20K10571+34#25289#25255
20K → Half2413+11#25255#25244
Half → 25K11344+69#25244#25175
25K → 30K14920+129#25175#25046
30K → 20M938+85#25046#24961
20M → 21M944+90#24961#24871
21M → 35K429+33#24871#24838
35K → 23M6510+55#24838#24783
23M → 24M576+51#24783#24732
24M → 40K731+72#24732#24660
40K → 25.2M222+20#24660#24640
25.2M → Finish3815+23#24640#24617
TOTALS1241391+850
📊

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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing