Boston Marathon logo
BOSTON MARATHON 2023

Lizbeth Nieves

Bib: 18960•F

IL

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F45-49)
#0 / 1817
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:11
Rank: #19189
Start → 5K
27:11 | 8:45/mi
10K· 6.21 mi
54:46
Rank: #19759 (-570)
5K → 10K
27:35 | 8:53/mi
15K· 9.32 mi
1:23:36
Rank: #20438 (-679)
10K → 15K
28:50 | 9:17/mi
20K· 12.43 mi
1:51:07
Rank: #20070 (+368)
15K → 20K
27:31 | 8:51/mi
Half· 13.11 mi
1:57:22
Rank: #20138 (-68)
20K → Half
6:15 | 9:10/mi
25K· 15.53 mi
2:20:06
Rank: #20209 (-71)
Half → 25K
22:44 | 9:23/mi
30K· 18.64 mi
2:49:43
Rank: #20076 (+133)
25K → 30K
29:37 | 9:32/mi
20M
3:03:02
Rank: #20058 (+18)
30K → 20M
13:19 | 9:48/mi
21M
3:13:45
Rank: #20060 (-2)
20M → 21M
10:43 | 10:43/mi
35K· 21.75 mi
3:21:57
Rank: #20244 (-184)
21M → 35K
8:12 | 10:58/mi
23M
3:34:52
Rank: #20278 (-34)
35K → 23M
12:55 | 10:19/mi
24M
3:44:23
Rank: #20242 (+36)
23M → 24M
9:31 | 9:31/mi
40K· 24.85 mi
3:52:44
Rank: #20197 (+45)
24M → 40K
8:21 | 9:46/mi
25.2M
3:57:06
Rank: #20255 (-58)
40K → 25.2M
4:22 | 12:40/mi
Finish· 26.22 mi
4:06:26
Rank: #20205 (+50)
25.2M → Finish
9:20 | 9:10/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
Time1:57:22
Pace8:57 /mi
2nd Half
Distance13.11 mi
Time2:09:04
Pace9:51 /mi
📊Positive Split: 10.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:1527:118:4527:11
8:45
-
10K
6.21 mi11:47:5054:468:4927:35
8:53
+0:08
15K
9.32 mi12:16:401:23:368:5828:50
9:17
+0:24
20K
12.43 mi12:44:111:51:078:5627:31
8:51
-0:26
Half
13.11 mi12:50:261:57:228:576:15
9:10
+0:19
25K
15.53 mi13:13:102:20:069:0122:44
9:23
+0:13
30K
18.64 mi13:42:472:49:439:0629:37
9:32
+0:09
20M
20.00 mi13:56:063:03:029:0913:19
9:48
+0:16
21M
21.00 mi14:06:493:13:459:1410:43
10:43
+0:55
35K
21.75 mi14:15:013:21:579:178:12
10:58
+0:15
23M
23.00 mi14:27:563:34:529:2112:55
10:19
-0:39
24M
24.00 mi14:37:273:44:239:219:31
9:31
-0:48
40K
24.85 mi14:45:483:52:449:228:21
9:46
+0:15
25.2M
25.20 mi14:50:103:57:069:254:22
12:40
+2:54
Finish
26.22 mi14:59:304:06:269:249:20
9:10
-3:30

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

8:45 /mi

Average Pace

9:24 /mi

Slowest Pace

12:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:22:17

33% of race

Time at Steady Pace

2:07:57

52% of race

Time at Slower Pace

36:12

15% of race

Average Pace: 9:24 /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 mi11:20:1527:118:4527:11
8:45
#19189
10K
6.21 mi11:47:5054:468:4927:35
8:53
#19759
15K
9.32 mi12:16:401:23:368:5828:50
9:17
#20438
20K
12.43 mi12:44:111:51:078:5627:31
8:51
#20070
Half
13.11 mi12:50:261:57:228:576:15
9:10
#20138
25K
15.53 mi13:13:102:20:069:0122:44
9:23
#20209
30K
18.64 mi13:42:472:49:439:0629:37
9:32
#20076
20M
20.00 mi13:56:063:03:029:0913:19
9:48
#20058
21M
21.00 mi14:06:493:13:459:1410:43
10:43
#20060
35K
21.75 mi14:15:013:21:579:178:12
10:58
#20244
23M
23.00 mi14:27:563:34:529:2112:55
10:19
#20278
24M
24.00 mi14:37:273:44:239:219:31
9:31
#20242
40K
24.85 mi14:45:483:52:449:228:21
9:46
#20197
25.2M
25.20 mi14:50:103:57:069:254:22
12:40
#20255
Finish
26.22 mi14:59:304:06:269:249:20
9:10
#20205
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi191897323732321578(Top 81%)8545(Top 75%)8545(Top 470%)
10K6.21 mi3.10 mi19759-5707630-3077630-30720335(Top 76%)7889(Top 69%)7889(Top 434%)
15K9.32 mi3.11 mi20438-6797980-3507980-35021578(Top 81%)8545(Top 75%)8545(Top 470%)
20K12.43 mi3.11 mi20070+3687759+2217759+22118993(Top 71%)7085(Top 62%)7085(Top 390%)
Half13.11 mi0.68 mi20138-687792-337792-3321050(Top 79%)8274(Top 72%)8274(Top 455%)
25K15.53 mi2.42 mi20209-717825-337825-3320443(Top 77%)7955(Top 70%)7955(Top 438%)
30K18.64 mi3.11 mi20076+1337769+567769+5619561(Top 73%)7512(Top 66%)7512(Top 413%)
20M20.00 mi1.36 mi20058+187778-97778-919862(Top 75%)7781(Top 68%)7781(Top 428%)
21M21.00 mi1.00 mi20060-27782-47782-420191(Top 76%)8028(Top 70%)8028(Top 442%)
35K21.75 mi0.75 mi20244-1847901-1197901-11923238(Top 87%)9715(Top 85%)9715(Top 535%)
23M23.00 mi1.25 mi20278-347926-257926-2520863(Top 78%)8441(Top 74%)8441(Top 465%)
24M24.00 mi1.00 mi20242+367914+127914+1219287(Top 72%)7612(Top 67%)7612(Top 419%)
40K24.85 mi0.85 mi20197+457903+117903+1119292(Top 72%)7650(Top 67%)7650(Top 421%)
25.2M25.20 mi0.35 mi20255-587937-347937-3423532(Top 88%)9938(Top 87%)9938(Top 547%)
Finish26.22 mi1.02 mi20205+507920+177920+1718760(Top 70%)7316(Top 64%)7316(Top 403%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 81%
×21stories
+97ft-345ft

Overall

21578

Females

8545

F45-49

8545

5K→10K

3.1 - 6.2 mi

Top 76%
×5stories
+79ft-138ft

Overall

20335

Females

7889

F45-49

7889

10K→15K

6.2 - 9.3 mi

Top 81%
×3stories
+67ft-78ft

Overall

21578

Females

8545

F45-49

8545

15K→20K

9.3 - 12.4 mi

Top 71%
×5stories
+106ft-86ft

Overall

18993

Females

7085

F45-49

7085

20K→Half

12.4 - 13.1 mi

Top 79%
×2stories
+19ft-37ft

Overall

21050

Females

8274

F45-49

8274

Half→25K

13.1 - 15.5 mi

Top 77%
×4stories
+66ft-88ft

Overall

20443

Females

7955

F45-49

7955

25K→30K

15.5 - 18.6 mi

Top 73%
×9stories
+181ft-148ft

Overall

19561

Females

7512

F45-49

7512

30K→20M

18.6 - 20.0 mi

Top 75%
×5stories
+64ft-50ft

Overall

19862

Females

7781

F45-49

7781

20M→21M

20.0 - 21.0 mi

Top 76%
×8stories
+106ft-24ft

Overall

20191

Females

8028

F45-49

8028

21M→35K

21.0 - 21.8 mi

Top 87%
×7stories
+17ft-86ft

Overall

23238

Females

9715

F45-49

9715

35K→23M

21.8 - 23.0 mi

Top 78%
×5stories
+23ft-63ft

Overall

20863

Females

8441

F45-49

8441

23M→24M

23.0 - 24.0 mi

Top 72%
×6stories
+12ft-82ft

Overall

19287

Females

7612

F45-49

7612

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

19292

Females

7650

F45-49

7650

40K→25.2M

24.9 - 25.2 mi

Top 88%
×1story
+13ft-16ft

Overall

23532

Females

9938

F45-49

9938

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2stories
+22ft-21ft

Overall

18760

Females

7316

F45-49

7316

Passing Analysis

Category:
Athletes Passed
1343
Passed By
2359
Net Change
-1016
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19189
5K → 10K127697-570#19189#19759
10K → 15K40719-679#19759#20438
15K → 20K40537+368#20438#20070
20K → Half977-68#20070#20138
Half → 25K114185-71#20138#20209
25K → 30K21481+133#20209#20076
30K → 20M8971+18#20076#20058
20M → 21M8082-2#20058#20060
21M → 35K13197-184#20060#20244
35K → 23M6195-34#20244#20278
23M → 24M5822+36#20278#20242
24M → 40K6520+45#20242#20197
40K → 25.2M462-58#20197#20255
25.2M → Finish6414+50#20255#20205
TOTALS13432359-1016
📊

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