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BOSTON MARATHON 2023

Tara Nguyen

Bib: 18806•F

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 43%
Gender (Female)
#0 / 11423
Top 25%
Masters (Masters Women)
#0 / 6539
Top 12%
Division (F45-49)
#0 / 1817
Top 13%
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
7:49/mi
24:18
↑ 97↓ 3451.5%
10K· 6.21 mi
7:40/mi
48:06
↑ 79↓ 1380.4%
15K· 9.32 mi
7:56/mi
1:12:46
↑ 67↓ 78
20K· 12.43 mi
7:50/mi
1:37:06
↑ 106↓ 860.1%
Half· 13.11 mi
7:55/mi
1:42:30
↑ 19↓ 370.5%
25K· 15.53 mi
7:55/mi
2:01:42
↑ 66↓ 880.2%
30K· 18.64 mi
8:01/mi
2:26:37
↑ 181↓ 1480.2%
20M
8:01/mi
2:37:30
↑ 64↓ 500.2%
21M
8:28/mi
2:45:58
↑ 106↓ 241.6%
35K· 21.75 mi
7:56/mi
2:51:54
↑ 17↓ 861.7%
23M
8:02/mi
3:01:57
↑ 23↓ 630.6%
24M
7:57/mi
3:09:54
↓ 821.3%
40K· 24.85 mi
8:02/mi
3:16:46
↓ 200.3%
25.2M
8:33/mi
3:19:43
↑ 13↓ 160.2%
Finish· 26.22 mi
7:45/mi
3:27:37
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:30
Pace7:49 /mi
2nd Half
Distance13.11 mi
Time1:45:07
Pace8:01 /mi
📊Positive Split: 2.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:2324:187:4924:18
7:49
-
10K
6.21 mi11:39:1148:067:4423:48
7:40
-0:09
15K
9.32 mi12:03:511:12:467:4824:40
7:56
+0:16
20K
12.43 mi12:28:111:37:067:4924:20
7:50
-0:06
Half
13.11 mi12:33:351:42:307:495:24
7:55
+0:05
25K
15.53 mi12:52:472:01:427:5019:12
7:55
0:00
30K
18.64 mi13:17:422:26:377:5224:55
8:01
+0:06
20M
20.00 mi13:28:352:37:307:5210:53
8:01
0:00
21M
21.00 mi13:37:032:45:587:548:28
8:28
+0:27
35K
21.75 mi13:42:592:51:547:545:56
7:56
-0:32
23M
23.00 mi13:53:023:01:577:5510:03
8:02
+0:06
24M
24.00 mi14:00:593:09:547:557:57
7:57
-0:05
40K
24.85 mi14:07:513:16:467:556:52
8:02
+0:05
25.2M
25.20 mi14:10:483:19:437:562:57
8:33
+0:31
Finish
26.22 mi14:18:423:27:377:557:54
7:45
-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

7:40 /mi

Average Pace

7:55 /mi

Slowest Pace

8:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:16:12

95% of race

Time at Steady Pace

11:25

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:55 /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 mi11:15:2324:187:4924:18
7:49
#12566
10K
6.21 mi11:39:1148:067:4423:48
7:40
#12197
15K
9.32 mi12:03:511:12:467:4824:40
7:56
#12757
20K
12.43 mi12:28:111:37:067:4924:20
7:50
#12520
Half
13.11 mi12:33:351:42:307:495:24
7:55
#12563
25K
15.53 mi12:52:472:01:427:5019:12
7:55
#12482
30K
18.64 mi13:17:422:26:377:5224:55
8:01
#12172
20M
20.00 mi13:28:352:37:307:5210:53
8:01
#12007
21M
21.00 mi13:37:032:45:587:548:28
8:28
#11897
35K
21.75 mi13:42:592:51:547:545:56
7:56
#11880
23M
23.00 mi13:53:023:01:577:5510:03
8:02
#11740
24M
24.00 mi14:00:593:09:547:557:57
7:57
#11691
40K
24.85 mi14:07:513:16:467:556:52
8:02
#11616
25.2M
25.20 mi14:10:483:19:437:562:57
8:33
#11574
Finish
26.22 mi14:18:423:27:377:557:54
7:45
#11487
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi125663195319513911(Top 52%)4028(Top 35%)4028(Top 222%)
10K6.21 mi3.10 mi12197+3692975+2202975+22011901(Top 45%)2808(Top 25%)2808(Top 155%)
15K9.32 mi3.11 mi12757-5603313-3383313-33813911(Top 52%)4028(Top 35%)4028(Top 222%)
20K12.43 mi3.11 mi12520+2373209+1043209+10412015(Top 45%)2982(Top 26%)2982(Top 164%)
Half13.11 mi0.68 mi12563-433244-353244-3513695(Top 51%)3882(Top 34%)3882(Top 214%)
25K15.53 mi2.42 mi12482+813219+253219+2512059(Top 45%)3109(Top 27%)3109(Top 171%)
30K18.64 mi3.11 mi12172+3103076+1433076+14311077(Top 42%)2681(Top 23%)2681(Top 148%)
20M20.00 mi1.36 mi12007+1653004+723004+7210367(Top 39%)2413(Top 21%)2413(Top 133%)
21M21.00 mi1.00 mi11897+1102950+542950+5410319(Top 39%)2546(Top 22%)2546(Top 140%)
35K21.75 mi0.75 mi11880+172956-62956-611640(Top 44%)3219(Top 28%)3219(Top 177%)
23M23.00 mi1.25 mi11740+1402899+572899+579967(Top 37%)2499(Top 22%)2499(Top 138%)
24M24.00 mi1.00 mi11691+492891+82891+810911(Top 41%)3042(Top 27%)3042(Top 167%)
40K24.85 mi0.85 mi11616+752870+212870+2110290(Top 39%)2801(Top 25%)2801(Top 154%)
25.2M25.20 mi0.35 mi11574+422861+92861+99946(Top 37%)2662(Top 23%)2662(Top 147%)
Finish26.22 mi1.02 mi11487+872847+142847+1410346(Top 39%)2863(Top 25%)2863(Top 158%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 52%
×21story building
+97ft-345ft

Overall

13911

Females

4028

F45-49

4028

5K→10K

3.1 - 6.2 mi

Top 45%
×5story building
+79ft-138ft

Overall

11901

Females

2808

F45-49

2808

10K→15K

6.2 - 9.3 mi

Top 52%
×3story building
+67ft-78ft

Overall

13911

Females

4028

F45-49

4028

15K→20K

9.3 - 12.4 mi

Top 45%
×5story building
+106ft-86ft

Overall

12015

Females

2982

F45-49

2982

20K→Half

12.4 - 13.1 mi

Top 51%
×2story building
+19ft-37ft

Overall

13695

Females

3882

F45-49

3882

Half→25K

13.1 - 15.5 mi

Top 45%
×4story building
+66ft-88ft

Overall

12059

Females

3109

F45-49

3109

25K→30K

15.5 - 18.6 mi

Top 42%
×9story building
+181ft-148ft

Overall

11077

Females

2681

F45-49

2681

30K→20M

18.6 - 20.0 mi

Top 39%
×5story building
+64ft-50ft

Overall

10367

Females

2413

F45-49

2413

20M→21M

20.0 - 21.0 mi

Top 39%
×8story building
+106ft-24ft

Overall

10319

Females

2546

F45-49

2546

21M→35K

21.0 - 21.8 mi

Top 44%
×7story building
+17ft-86ft

Overall

11640

Females

3219

F45-49

3219

35K→23M

21.8 - 23.0 mi

Top 37%
×5story building
+23ft-63ft

Overall

9967

Females

2499

F45-49

2499

23M→24M

23.0 - 24.0 mi

Top 41%
×6story building
+12ft-82ft

Overall

10911

Females

3042

F45-49

3042

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

10290

Females

2801

F45-49

2801

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

9946

Females

2662

F45-49

2662

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2story building
+22ft-21ft

Overall

10346

Females

2863

F45-49

2863

Passing Analysis

Category:
Athletes Passed
2378
Passed By
1299
Net Change
+1079
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12566
5K → 10K529160+369#12566#12197
10K → 15K63623-560#12197#12757
15K → 20K30770+237#12757#12520
20K → Half1861-43#12520#12563
Half → 25K16988+81#12563#12482
25K → 30K36454+310#12482#12172
30K → 20M19631+165#12172#12007
20M → 21M14434+110#12007#11897
21M → 35K5841+17#11897#11880
35K → 23M16323+140#11880#11740
23M → 24M9445+49#11740#11691
24M → 40K9924+75#11691#11616
40K → 25.2M5412+42#11616#11574
25.2M → Finish12033+87#11574#11487
TOTALS23781299+1079
📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing