Boston Marathon logo
BOSTON MARATHON 2023

Isabella Preneta

Bib: 27003•F

CT

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:05
Rank: #20637
Start → 5K
28:05 | 9:02/mi
10K· 6.21 mi
54:38
Rank: #19639 (+998)
5K → 10K
26:33 | 8:33/mi
15K· 9.32 mi
1:22:28
Rank: #19858 (-219)
10K → 15K
27:50 | 8:58/mi
20K· 12.43 mi
1:51:50
Rank: #20364 (-506)
15K → 20K
29:22 | 9:27/mi
Half· 13.11 mi
1:58:18
Rank: #20472 (-108)
20K → Half
6:28 | 9:29/mi
25K· 15.53 mi
2:22:18
Rank: #20803 (-331)
Half → 25K
24:00 | 9:54/mi
30K· 18.64 mi
2:55:27
Rank: #21215 (-412)
25K → 30K
33:09 | 10:40/mi
20M
3:10:13
Rank: #21316 (-101)
30K → 20M
14:46 | 10:52/mi
21M
3:22:37
Rank: #21497 (-181)
20M → 21M
12:24 | 12:24/mi
35K· 21.75 mi
3:30:27
Rank: #21527 (-30)
21M → 35K
7:50 | 10:28/mi
23M
3:43:51
Rank: #21556 (-29)
35K → 23M
13:24 | 10:42/mi
24M
3:54:19
Rank: #21572 (-16)
23M → 24M
10:28 | 10:28/mi
40K· 24.85 mi
4:03:51
Rank: #21644 (-72)
24M → 40K
9:32 | 11:09/mi
25.2M
4:07:53
Rank: #21649 (-5)
40K → 25.2M
4:02 | 11:42/mi
Finish· 26.22 mi
4:17:57
Rank: #21633 (+16)
25.2M → Finish
10:04 | 9:53/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
Time1:58:18
Pace9:01 /mi
2nd Half
Distance13.11 mi
Time2:19:39
Pace10:39 /mi
📊Positive Split: 18.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:2328:059:0228:05
9:02
-
10K
6.21 mi12:11:5654:388:4826:33
8:33
-0:29
15K
9.32 mi12:39:461:22:288:5127:50
8:58
+0:25
20K
12.43 mi13:09:081:51:509:0029:22
9:27
+0:29
Half
13.11 mi13:15:361:58:189:016:28
9:29
+0:02
25K
15.53 mi13:39:362:22:189:1024:00
9:54
+0:25
30K
18.64 mi14:12:452:55:279:2533:09
10:40
+0:46
20M
20.00 mi14:27:313:10:139:3114:46
10:52
+0:12
21M
21.00 mi14:39:553:22:379:3912:24
12:24
+1:32
35K
21.75 mi14:47:453:30:279:417:50
10:28
-1:56
23M
23.00 mi15:01:093:43:519:4413:24
10:42
+0:14
24M
24.00 mi15:11:373:54:199:4610:28
10:28
-0:14
40K
24.85 mi15:21:094:03:519:499:32
11:09
+0:41
25.2M
25.20 mi15:25:114:07:539:504:02
11:42
+0:33
Finish
26.22 mi15:35:154:17:579:5110:04
9:53
-1:49

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

8:33 /mi

Average Pace

9:51 /mi

Slowest Pace

12:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:32:22

59% of race

Time at Steady Pace

1:19:37

31% of race

Time at Slower Pace

25:58

10% of race

Average Pace: 9:50 /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 mi11:45:2328:059:0228:05
9:02
#20637
10K
6.21 mi12:11:5654:388:4826:33
8:33
#19639
15K
9.32 mi12:39:461:22:288:5127:50
8:58
#19858
20K
12.43 mi13:09:081:51:509:0029:22
9:27
#20364
Half
13.11 mi13:15:361:58:189:016:28
9:29
#20472
25K
15.53 mi13:39:362:22:189:1024:00
9:54
#20803
30K
18.64 mi14:12:452:55:279:2533:09
10:40
#21215
20M
20.00 mi14:27:313:10:139:3114:46
10:52
#21316
21M
21.00 mi14:39:553:22:379:3912:24
12:24
#21497
35K
21.75 mi14:47:453:30:279:417:50
10:28
#21527
23M
23.00 mi15:01:093:43:519:4413:24
10:42
#21556
24M
24.00 mi15:11:373:54:199:4610:28
10:28
#21572
40K
24.85 mi15:21:094:03:519:499:32
11:09
#21644
25.2M
25.20 mi15:25:114:07:539:504:02
11:42
#21649
Finish
26.22 mi15:35:154:17:579:5110:04
9:53
#21633
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi206378192819220323(Top 76%)7860(Top 69%)7860(Top 161%)
10K6.21 mi3.10 mi19639+9987558+6347558+63418552(Top 70%)6805(Top 60%)6805(Top 139%)
15K9.32 mi3.11 mi19858-2197657-997657-9920323(Top 76%)7860(Top 69%)7860(Top 161%)
20K12.43 mi3.11 mi20364-5067923-2667923-26621409(Top 80%)8475(Top 74%)8475(Top 174%)
Half13.11 mi0.68 mi20472-1087981-587981-5822068(Top 83%)8817(Top 77%)8817(Top 181%)
25K15.53 mi2.42 mi20803-3318149-1688149-16821988(Top 83%)8833(Top 77%)8833(Top 181%)
30K18.64 mi3.11 mi21215-4128401-2528401-25222545(Top 85%)9208(Top 81%)9208(Top 189%)
20M20.00 mi1.36 mi21316-1018474-738474-7322454(Top 84%)9227(Top 81%)9227(Top 189%)
21M21.00 mi1.00 mi21497-1818579-1058579-10523333(Top 88%)9720(Top 85%)9720(Top 199%)
35K21.75 mi0.75 mi21527-308600-218600-2122333(Top 84%)9230(Top 81%)9230(Top 189%)
23M23.00 mi1.25 mi21556-298633-338633-3321770(Top 82%)8947(Top 78%)8947(Top 183%)
24M24.00 mi1.00 mi21572-168654-218654-2121976(Top 83%)9085(Top 80%)9085(Top 186%)
40K24.85 mi0.85 mi21644-728702-488702-4822653(Top 85%)9478(Top 83%)9478(Top 194%)
25.2M25.20 mi0.35 mi21649-58713-118713-1121969(Top 83%)9112(Top 80%)9112(Top 187%)
Finish26.22 mi1.02 mi21633+168711+28711+221428(Top 80%)8803(Top 77%)8803(Top 180%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21stories
+97ft-345ft

Overall

20323

Females

7860

F18-39

7860

5K→10K

3.1 - 6.2 mi

Top 70%
×5stories
+79ft-138ft

Overall

18552

Females

6805

F18-39

6805

10K→15K

6.2 - 9.3 mi

Top 76%
×3stories
+67ft-78ft

Overall

20323

Females

7860

F18-39

7860

15K→20K

9.3 - 12.4 mi

Top 80%
×5stories
+106ft-86ft

Overall

21409

Females

8475

F18-39

8475

20K→Half

12.4 - 13.1 mi

Top 83%
×2stories
+19ft-37ft

Overall

22068

Females

8817

F18-39

8817

Half→25K

13.1 - 15.5 mi

Top 83%
×4stories
+66ft-88ft

Overall

21988

Females

8833

F18-39

8833

25K→30K

15.5 - 18.6 mi

Top 85%
×9stories
+181ft-148ft

Overall

22545

Females

9208

F18-39

9208

30K→20M

18.6 - 20.0 mi

Top 84%
×5stories
+64ft-50ft

Overall

22454

Females

9227

F18-39

9227

20M→21M

20.0 - 21.0 mi

Top 88%
×8stories
+106ft-24ft

Overall

23333

Females

9720

F18-39

9720

21M→35K

21.0 - 21.8 mi

Top 84%
×7stories
+17ft-86ft

Overall

22333

Females

9230

F18-39

9230

35K→23M

21.8 - 23.0 mi

Top 82%
×5stories
+23ft-63ft

Overall

21770

Females

8947

F18-39

8947

23M→24M

23.0 - 24.0 mi

Top 83%
×6stories
+12ft-82ft

Overall

21976

Females

9085

F18-39

9085

24M→40K

24.0 - 24.9 mi

Top 85%
×1story
+6ft-20ft

Overall

22653

Females

9478

F18-39

9478

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

21969

Females

9112

F18-39

9112

25.2M→Finish

25.2 - 26.2 mi

Top 80%
×2stories
+22ft-21ft

Overall

21428

Females

8803

F18-39

8803

Passing Analysis

Category:
Athletes Passed
1558
Passed By
2554
Net Change
-996
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20637
5K → 10K105860+998#20637#19639
10K → 15K95314-219#19639#19858
15K → 20K55561-506#19858#20364
20K → Half8116-108#20364#20472
Half → 25K28359-331#20472#20803
25K → 30K51463-412#20803#21215
30K → 20M44145-101#21215#21316
20M → 21M23204-181#21316#21497
21M → 35K2151-30#21497#21527
35K → 23M5483-29#21527#21556
23M → 24M3652-16#21556#21572
24M → 40K2294-72#21572#21644
40K → 25.2M2025-5#21644#21649
25.2M → Finish4327+16#21649#21633
TOTALS15582554-996
📊

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