Boston Marathon logo
BOSTON MARATHON 2023

Jennifer Dantone-Smith

Bib: 21435•F

MS

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
27:30
Rank: #19752
Start → 5K
27:30 | 8:51/mi
10K· 6.21 mi
54:42
Rank: #19703 (+49)
5K → 10K
27:12 | 8:45/mi
15K· 9.32 mi
1:21:56
Rank: #19558 (+145)
10K → 15K
27:14 | 8:46/mi
20K· 12.43 mi
1:49:37
Rank: #19430 (+128)
15K → 20K
27:41 | 8:55/mi
Half· 13.11 mi
1:55:38
Rank: #19441 (-11)
20K → Half
6:01 | 8:49/mi
25K· 15.53 mi
2:17:18
Rank: #19301 (+140)
Half → 25K
21:40 | 8:56/mi
30K· 18.64 mi
2:46:34
Rank: #19291 (+10)
25K → 30K
29:16 | 9:25/mi
20M
3:00:03
Rank: #19378 (-87)
30K → 20M
13:29 | 9:55/mi
21M
3:10:43
Rank: #19430 (-52)
20M → 21M
10:40 | 10:40/mi
35K· 21.75 mi
3:18:07
Rank: #19514 (-84)
21M → 35K
7:24 | 9:53/mi
23M
3:30:57
Rank: #19617 (-103)
35K → 23M
12:50 | 10:15/mi
24M
3:40:40
Rank: #19642 (-25)
23M → 24M
9:43 | 9:43/mi
40K· 24.85 mi
3:49:10
Rank: #19661 (-19)
24M → 40K
8:30 | 9:56/mi
25.2M
3:52:54
Rank: #19677 (-16)
40K → 25.2M
3:44 | 10:50/mi
Finish· 26.22 mi
4:02:49
Rank: #19737 (-60)
25.2M → Finish
9:55 | 9:44/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
Time1:55:38
Pace8:49 /mi
2nd Half
Distance13.11 mi
Time2:07:11
Pace9:42 /mi
📊Positive Split: 10.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:1727:308:5127:30
8:51
-
10K
6.21 mi11:49:2954:428:4827:12
8:45
-0:06
15K
9.32 mi12:16:431:21:568:4727:14
8:46
+0:01
20K
12.43 mi12:44:241:49:378:4927:41
8:55
+0:09
Half
13.11 mi12:50:251:55:388:496:01
8:49
-0:06
25K
15.53 mi13:12:052:17:188:5021:40
8:56
+0:07
30K
18.64 mi13:41:212:46:348:5629:16
9:25
+0:29
20M
20.00 mi13:54:503:00:039:0013:29
9:55
+0:30
21M
21.00 mi14:05:303:10:439:0510:40
10:40
+0:45
35K
21.75 mi14:12:543:18:079:077:24
9:53
-0:47
23M
23.00 mi14:25:443:30:579:1012:50
10:15
+0:22
24M
24.00 mi14:35:273:40:409:129:43
9:43
-0:32
40K
24.85 mi14:43:573:49:109:138:30
9:56
+0:13
25.2M
25.20 mi14:47:413:52:549:153:44
10:50
+0:54
Finish
26.22 mi14:57:364:02:499:169:55
9:44
-1:06

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

9:16 /mi

Slowest Pace

10:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:17:18

57% of race

Time at Steady Pace

1:18:17

32% of race

Time at Slower Pace

27:14

11% of race

Average Pace: 9:16 /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 mi11:22:1727:308:5127:30
8:51
#19752
10K
6.21 mi11:49:2954:428:4827:12
8:45
#19703
15K
9.32 mi12:16:431:21:568:4727:14
8:46
#19558
20K
12.43 mi12:44:241:49:378:4927:41
8:55
#19430
Half
13.11 mi12:50:251:55:388:496:01
8:49
#19441
25K
15.53 mi13:12:052:17:188:5021:40
8:56
#19301
30K
18.64 mi13:41:212:46:348:5629:16
9:25
#19291
20M
20.00 mi13:54:503:00:039:0013:29
9:55
#19378
21M
21.00 mi14:05:303:10:439:0510:40
10:40
#19430
35K
21.75 mi14:12:543:18:079:077:24
9:53
#19514
23M
23.00 mi14:25:443:30:579:1012:50
10:15
#19617
24M
24.00 mi14:35:273:40:409:129:43
9:43
#19642
40K
24.85 mi14:43:573:49:109:138:30
9:56
#19661
25.2M
25.20 mi14:47:413:52:549:153:44
10:50
#19677
Finish
26.22 mi14:57:364:02:499:169:55
9:44
#19737
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi197527666766619341(Top 73%)7294(Top 64%)7294(Top 401%)
10K6.21 mi3.10 mi19703+497591+757591+7519712(Top 74%)7520(Top 66%)7520(Top 414%)
15K9.32 mi3.11 mi19558+1457483+1087483+10819341(Top 73%)7294(Top 64%)7294(Top 401%)
20K12.43 mi3.11 mi19430+1287387+967387+9619264(Top 72%)7251(Top 63%)7251(Top 399%)
Half13.11 mi0.68 mi19441-117389-27389-219634(Top 74%)7462(Top 65%)7462(Top 411%)
25K15.53 mi2.42 mi19301+1407306+837306+8318665(Top 70%)6946(Top 61%)6946(Top 382%)
30K18.64 mi3.11 mi19291+107311-57311-519138(Top 72%)7273(Top 64%)7273(Top 400%)
20M20.00 mi1.36 mi19378-877376-657376-6520253(Top 76%)7998(Top 70%)7998(Top 440%)
21M21.00 mi1.00 mi19430-527421-457421-4520068(Top 75%)7966(Top 70%)7966(Top 438%)
35K21.75 mi0.75 mi19514-847471-507471-5020984(Top 79%)8479(Top 74%)8479(Top 467%)
23M23.00 mi1.25 mi19617-1037535-647535-6420716(Top 78%)8352(Top 73%)8352(Top 460%)
24M24.00 mi1.00 mi19642-257561-267561-2619959(Top 75%)7949(Top 70%)7949(Top 437%)
40K24.85 mi0.85 mi19661-197585-247585-2419824(Top 74%)7959(Top 70%)7959(Top 438%)
25.2M25.20 mi0.35 mi19677-167599-147599-1420061(Top 75%)8092(Top 71%)8092(Top 445%)
Finish26.22 mi1.02 mi19737-607638-397638-3920911(Top 79%)8503(Top 74%)8503(Top 468%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 73%
×21stories
+97ft-345ft

Overall

19341

Females

7294

F45-49

7294

5K→10K

3.1 - 6.2 mi

Top 74%
×5stories
+79ft-138ft

Overall

19712

Females

7520

F45-49

7520

10K→15K

6.2 - 9.3 mi

Top 73%
×3stories
+67ft-78ft

Overall

19341

Females

7294

F45-49

7294

15K→20K

9.3 - 12.4 mi

Top 72%
×5stories
+106ft-86ft

Overall

19264

Females

7251

F45-49

7251

20K→Half

12.4 - 13.1 mi

Top 74%
×2stories
+19ft-37ft

Overall

19634

Females

7462

F45-49

7462

Half→25K

13.1 - 15.5 mi

Top 70%
×4stories
+66ft-88ft

Overall

18665

Females

6946

F45-49

6946

25K→30K

15.5 - 18.6 mi

Top 72%
×9stories
+181ft-148ft

Overall

19138

Females

7273

F45-49

7273

30K→20M

18.6 - 20.0 mi

Top 76%
×5stories
+64ft-50ft

Overall

20253

Females

7998

F45-49

7998

20M→21M

20.0 - 21.0 mi

Top 75%
×8stories
+106ft-24ft

Overall

20068

Females

7966

F45-49

7966

21M→35K

21.0 - 21.8 mi

Top 79%
×7stories
+17ft-86ft

Overall

20984

Females

8479

F45-49

8479

35K→23M

21.8 - 23.0 mi

Top 78%
×5stories
+23ft-63ft

Overall

20716

Females

8352

F45-49

8352

23M→24M

23.0 - 24.0 mi

Top 75%
×6stories
+12ft-82ft

Overall

19959

Females

7949

F45-49

7949

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

19824

Females

7959

F45-49

7959

40K→25.2M

24.9 - 25.2 mi

Top 75%
×1story
+13ft-16ft

Overall

20061

Females

8092

F45-49

8092

25.2M→Finish

25.2 - 26.2 mi

Top 79%
×2stories
+22ft-21ft

Overall

20911

Females

8503

F45-49

8503

Passing Analysis

Category:
Athletes Passed
1535
Passed By
1520
Net Change
+15
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19752
5K → 10K332283+49#19752#19703
10K → 15K265120+145#19703#19558
15K → 20K21991+128#19558#19430
20K → Half2839-11#19430#19441
Half → 25K19353+140#19441#19301
25K → 30K169159+10#19301#19291
30K → 20M56143-87#19291#19378
20M → 21M72124-52#19378#19430
21M → 35K20104-84#19430#19514
35K → 23M45148-103#19514#19617
23M → 24M4772-25#19617#19642
24M → 40K4463-19#19642#19661
40K → 25.2M1834-16#19661#19677
25.2M → Finish2787-60#19677#19737
TOTALS15351520+15
📊

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