Boston Marathon logo
BOSTON MARATHON 2023

Jill Leaness

Bib: 16115•F

DC

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 36%
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
24:34
Rank: #13320
Start → 5K
24:34 | 7:54/mi
10K· 6.21 mi
49:18
Rank: #13858 (-538)
5K → 10K
24:44 | 7:58/mi
15K· 9.32 mi
1:13:34
Rank: #13523 (+335)
10K → 15K
24:16 | 7:49/mi
20K· 12.43 mi
1:37:57
Rank: #13149 (+374)
15K → 20K
24:23 | 7:51/mi
Half· 13.11 mi
1:43:10
Rank: #13039 (+110)
20K → Half
5:13 | 7:39/mi
25K· 15.53 mi
2:02:28
Rank: #12910 (+129)
Half → 25K
19:18 | 7:58/mi
30K· 18.64 mi
2:28:36
Rank: #13079 (-169)
25K → 30K
26:08 | 8:25/mi
20M
2:40:38
Rank: #13292 (-213)
30K → 20M
12:02 | 8:51/mi
21M
2:50:14
Rank: #13502 (-210)
20M → 21M
9:36 | 9:36/mi
35K· 21.75 mi
2:56:40
Rank: #13604 (-102)
21M → 35K
6:26 | 8:36/mi
23M
3:07:40
Rank: #13664 (-60)
35K → 23M
11:00 | 8:47/mi
24M
3:16:24
Rank: #13750 (-86)
23M → 24M
8:44 | 8:44/mi
40K· 24.85 mi
3:23:58
Rank: #13814 (-64)
24M → 40K
7:34 | 8:51/mi
25.2M
3:27:11
Rank: #13822 (-8)
40K → 25.2M
3:13 | 9:20/mi
Finish· 26.22 mi
3:35:33
Rank: #13790 (+32)
25.2M → Finish
8:22 | 8:13/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
Time1:43:10
Pace7:52 /mi
2nd Half
Distance13.11 mi
Time1:52:23
Pace8:34 /mi
📊Positive Split: 8.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:4124:347:5424:34
7:54
-
10K
6.21 mi11:39:2549:187:5624:44
7:58
+0:04
15K
9.32 mi12:03:411:13:347:5424:16
7:49
-0:09
20K
12.43 mi12:28:041:37:577:5324:23
7:51
+0:02
Half
13.11 mi12:33:171:43:107:525:13
7:39
-0:12
25K
15.53 mi12:52:352:02:287:5319:18
7:58
+0:19
30K
18.64 mi13:18:432:28:367:5826:08
8:25
+0:27
20M
20.00 mi13:30:452:40:388:0212:02
8:51
+0:26
21M
21.00 mi13:40:212:50:148:069:36
9:36
+0:45
35K
21.75 mi13:46:472:56:408:076:26
8:36
-1:00
23M
23.00 mi13:57:473:07:408:1011:00
8:47
+0:11
24M
24.00 mi14:06:313:16:248:118:44
8:44
-0:03
40K
24.85 mi14:14:053:23:588:127:34
8:51
+0:07
25.2M
25.20 mi14:17:183:27:118:133:13
9:20
+0:29
Finish
26.22 mi14:25:403:35:338:148:22
8:13
-1:07

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

7:39 /mi

Average Pace

8:14 /mi

Slowest Pace

9:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:02:28

57% of race

Time at Steady Pace

40:56

19% of race

Time at Slower Pace

52:09

24% of race

Average Pace: 8:13 /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 mi11:14:4124:347:5424:34
7:54
#13320
10K
6.21 mi11:39:2549:187:5624:44
7:58
#13858
15K
9.32 mi12:03:411:13:347:5424:16
7:49
#13523
20K
12.43 mi12:28:041:37:577:5324:23
7:51
#13149
Half
13.11 mi12:33:171:43:107:525:13
7:39
#13039
25K
15.53 mi12:52:352:02:287:5319:18
7:58
#12910
30K
18.64 mi13:18:432:28:367:5826:08
8:25
#13079
20M
20.00 mi13:30:452:40:388:0212:02
8:51
#13292
21M
21.00 mi13:40:212:50:148:069:36
9:36
#13502
35K
21.75 mi13:46:472:56:408:076:26
8:36
#13604
23M
23.00 mi13:57:473:07:408:1011:00
8:47
#13664
24M
24.00 mi14:06:313:16:248:118:44
8:44
#13750
40K
24.85 mi14:14:053:23:588:127:34
8:51
#13814
25.2M
25.20 mi14:17:183:27:118:133:13
9:20
#13822
Finish
26.22 mi14:25:403:35:338:148:22
8:13
#13790
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi133203623362312847(Top 48%)3380(Top 30%)3380(Top 69%)
10K6.21 mi3.10 mi13858-5383954-3313954-33114508(Top 54%)4362(Top 38%)4362(Top 89%)
15K9.32 mi3.11 mi13523+3353767+1873767+18712847(Top 48%)3380(Top 30%)3380(Top 69%)
20K12.43 mi3.11 mi13149+3743579+1883579+18812174(Top 46%)3076(Top 27%)3076(Top 63%)
Half13.11 mi0.68 mi13039+1103510+693510+6911522(Top 43%)2663(Top 23%)2663(Top 55%)
25K15.53 mi2.42 mi12910+1293456+543456+5412430(Top 47%)3330(Top 29%)3330(Top 68%)
30K18.64 mi3.11 mi13079-1693600-1443600-14413768(Top 52%)4194(Top 37%)4194(Top 86%)
20M20.00 mi1.36 mi13292-2133730-1303730-13015748(Top 59%)5412(Top 47%)5412(Top 111%)
21M21.00 mi1.00 mi13502-2103876-1463876-14616421(Top 62%)5860(Top 51%)5860(Top 120%)
35K21.75 mi0.75 mi13604-1023952-763952-7615864(Top 60%)5599(Top 49%)5599(Top 115%)
23M23.00 mi1.25 mi13664-604017-654017-6514917(Top 56%)5117(Top 45%)5117(Top 105%)
24M24.00 mi1.00 mi13750-864101-844101-8415854(Top 60%)5719(Top 50%)5719(Top 117%)
40K24.85 mi0.85 mi13814-644157-564157-5615360(Top 58%)5492(Top 48%)5492(Top 112%)
25.2M25.20 mi0.35 mi13822-84167-104167-1014359(Top 54%)4929(Top 43%)4929(Top 101%)
Finish26.22 mi1.02 mi13790+324165+24165+213529(Top 51%)4484(Top 39%)4484(Top 92%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21stories
+97ft-345ft

Overall

12847

Females

3380

F18-39

3380

5K→10K

3.1 - 6.2 mi

Top 54%
×5stories
+79ft-138ft

Overall

14508

Females

4362

F18-39

4362

10K→15K

6.2 - 9.3 mi

Top 48%
×3stories
+67ft-78ft

Overall

12847

Females

3380

F18-39

3380

15K→20K

9.3 - 12.4 mi

Top 46%
×5stories
+106ft-86ft

Overall

12174

Females

3076

F18-39

3076

20K→Half

12.4 - 13.1 mi

Top 43%
×2stories
+19ft-37ft

Overall

11522

Females

2663

F18-39

2663

Half→25K

13.1 - 15.5 mi

Top 47%
×4stories
+66ft-88ft

Overall

12430

Females

3330

F18-39

3330

25K→30K

15.5 - 18.6 mi

Top 52%
×9stories
+181ft-148ft

Overall

13768

Females

4194

F18-39

4194

30K→20M

18.6 - 20.0 mi

Top 59%
×5stories
+64ft-50ft

Overall

15748

Females

5412

F18-39

5412

20M→21M

20.0 - 21.0 mi

Top 62%
×8stories
+106ft-24ft

Overall

16421

Females

5860

F18-39

5860

21M→35K

21.0 - 21.8 mi

Top 60%
×7stories
+17ft-86ft

Overall

15864

Females

5599

F18-39

5599

35K→23M

21.8 - 23.0 mi

Top 56%
×5stories
+23ft-63ft

Overall

14917

Females

5117

F18-39

5117

23M→24M

23.0 - 24.0 mi

Top 60%
×6stories
+12ft-82ft

Overall

15854

Females

5719

F18-39

5719

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

15360

Females

5492

F18-39

5492

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

14359

Females

4929

F18-39

4929

25.2M→Finish

25.2 - 26.2 mi

Top 51%
×2stories
+22ft-21ft

Overall

13529

Females

4484

F18-39

4484

Passing Analysis

Category:
Athletes Passed
1743
Passed By
2213
Net Change
-470
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13320
5K → 10K109647-538#13320#13858
10K → 15K39257+335#13858#13523
15K → 20K41541+374#13523#13149
20K → Half1122+110#13149#13039
Half → 25K20475+129#13039#12910
25K → 30K133302-169#12910#13079
30K → 20M40253-213#13079#13292
20M → 21M38248-210#13292#13502
21M → 35K35137-102#13502#13604
35K → 23M67127-60#13604#13664
23M → 24M45131-86#13664#13750
24M → 40K44108-64#13750#13814
40K → 25.2M2230-8#13814#13822
25.2M → Finish8755+32#13822#13790
TOTALS17432213-470
📊

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