Boston Marathon logo
BOSTON MARATHON 2023

Jill Holsclaw

Bib: 23762•F

PA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F55-59)
#0 / 815
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
33:21
Rank: #25256
Start → 5K
33:21 | 10:44/mi
10K· 6.21 mi
1:07:20
Rank: #25334 (-78)
5K → 10K
33:59 | 10:56/mi
15K· 9.32 mi
1:41:32
Rank: #25292 (+42)
10K → 15K
34:12 | 11:00/mi
20K· 12.43 mi
2:17:11
Rank: #25289 (+3)
15K → 20K
35:39 | 11:28/mi
Half· 13.11 mi
2:24:51
Rank: #25281 (+8)
20K → Half
7:40 | 11:14/mi
25K· 15.53 mi
2:52:47
Rank: #25184 (+97)
Half → 25K
27:56 | 11:31/mi
30K· 18.64 mi
3:29:54
Rank: #25045 (+139)
25K → 30K
37:07 | 11:57/mi
20M
3:45:41
Rank: #24966 (+79)
30K → 20M
15:47 | 11:37/mi
21M
3:58:46
Rank: #24918 (+48)
20M → 21M
13:05 | 13:05/mi
35K· 21.75 mi
4:08:36
Rank: #24984 (-66)
21M → 35K
9:50 | 13:09/mi
23M
4:22:50
Rank: #24899 (+85)
35K → 23M
14:14 | 11:22/mi
24M
4:34:00
Rank: #24837 (+62)
23M → 24M
11:10 | 11:10/mi
40K· 24.85 mi
4:44:29
Rank: #24832 (+5)
24M → 40K
10:29 | 12:16/mi
25.2M
4:48:35
Rank: #24819 (+13)
40K → 25.2M
4:06 | 11:53/mi
Finish· 26.22 mi
4:59:27
Rank: #24792 (+27)
25.2M → Finish
10:52 | 10:40/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
Time2:24:51
Pace11:03 /mi
2nd Half
Distance13.11 mi
Time2:34:36
Pace11:48 /mi
📊Positive Split: 6.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:30:0433:2110:4433:21
10:44
-
10K
6.21 mi12:04:031:07:2010:5033:59
10:56
+0:12
15K
9.32 mi12:38:151:41:3210:5434:12
11:00
+0:04
20K
12.43 mi13:13:542:17:1111:0235:39
11:28
+0:28
Half
13.11 mi13:21:342:24:5111:037:40
11:14
-0:14
25K
15.53 mi13:49:302:52:4711:0727:56
11:31
+0:17
30K
18.64 mi14:26:373:29:5411:1637:07
11:57
+0:26
20M
20.00 mi14:42:243:45:4111:1715:47
11:37
-0:20
21M
21.00 mi14:55:293:58:4611:2213:05
13:05
+1:28
35K
21.75 mi15:05:194:08:3611:269:50
13:09
+0:04
23M
23.00 mi15:19:334:22:5011:2614:14
11:22
-1:47
24M
24.00 mi15:30:434:34:0011:2511:10
11:10
-0:12
40K
24.85 mi15:41:124:44:2911:2710:29
12:16
+1:06
25.2M
25.20 mi15:45:184:48:3511:274:06
11:53
-0:23
Finish
26.22 mi15:56:104:59:2711:2610:52
10:40
-1:13

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

10:40 /mi

Average Pace

11:26 /mi

Slowest Pace

13:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:52:24

38% of race

Time at Steady Pace

1:52:26

38% of race

Time at Slower Pace

1:14:37

25% of race

Average Pace: 11:25 /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 mi11:30:0433:2110:4433:21
10:44
#25256
10K
6.21 mi12:04:031:07:2010:5033:59
10:56
#25334
15K
9.32 mi12:38:151:41:3210:5434:12
11:00
#25292
20K
12.43 mi13:13:542:17:1111:0235:39
11:28
#25289
Half
13.11 mi13:21:342:24:5111:037:40
11:14
#25281
25K
15.53 mi13:49:302:52:4711:0727:56
11:31
#25184
30K
18.64 mi14:26:373:29:5411:1637:07
11:57
#25045
20M
20.00 mi14:42:243:45:4111:1715:47
11:37
#24966
21M
21.00 mi14:55:293:58:4611:2213:05
13:05
#24918
35K
21.75 mi15:05:194:08:3611:269:50
13:09
#24984
23M
23.00 mi15:19:334:22:5011:2614:14
11:22
#24899
24M
24.00 mi15:30:434:34:0011:2511:10
11:10
#24837
40K
24.85 mi15:41:124:44:2911:2710:29
12:16
#24832
25.2M
25.20 mi15:45:184:48:3511:274:06
11:53
#24819
Finish
26.22 mi15:56:104:59:2711:2610:52
10:40
#24792
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi25256105821058225179(Top 95%)10559(Top 92%)10559(Top 1296%)
10K6.21 mi3.10 mi25334-7810622-4010622-4025394(Top 95%)10663(Top 93%)10663(Top 1308%)
15K9.32 mi3.11 mi25292+4210609+1310609+1325179(Top 95%)10559(Top 92%)10559(Top 1296%)
20K12.43 mi3.11 mi25289+310617-810617-825215(Top 95%)10610(Top 93%)10610(Top 1302%)
Half13.11 mi0.68 mi25281+810620-310620-325250(Top 95%)10645(Top 93%)10645(Top 1306%)
25K15.53 mi2.42 mi25184+9710575+4510575+4524702(Top 93%)10343(Top 91%)10343(Top 1269%)
30K18.64 mi3.11 mi25045+13910511+6410511+6424432(Top 92%)10240(Top 90%)10240(Top 1256%)
20M20.00 mi1.36 mi24966+7910478+3310478+3323700(Top 89%)9902(Top 87%)9902(Top 1215%)
21M21.00 mi1.00 mi24918+4810461+1710461+1724192(Top 91%)10198(Top 89%)10198(Top 1251%)
35K21.75 mi0.75 mi24984-6610507-4610507-4625671(Top 96%)10981(Top 96%)10981(Top 1347%)
23M23.00 mi1.25 mi24899+8510463+4410463+4423026(Top 86%)9605(Top 84%)9605(Top 1179%)
24M24.00 mi1.00 mi24837+6210436+2710436+2723354(Top 88%)9831(Top 86%)9831(Top 1206%)
40K24.85 mi0.85 mi24832+510439-310439-324192(Top 91%)10277(Top 90%)10277(Top 1261%)
25.2M25.20 mi0.35 mi24819+1310433+610433+622338(Top 84%)9316(Top 82%)9316(Top 1143%)
Finish26.22 mi1.02 mi24792+2710422+1110422+1123367(Top 88%)9846(Top 86%)9846(Top 1208%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 95%
×21stories
+97ft-345ft

Overall

25179

Females

10559

F55-59

10559

5K→10K

3.1 - 6.2 mi

Top 95%
×5stories
+79ft-138ft

Overall

25394

Females

10663

F55-59

10663

10K→15K

6.2 - 9.3 mi

Top 95%
×3stories
+67ft-78ft

Overall

25179

Females

10559

F55-59

10559

15K→20K

9.3 - 12.4 mi

Top 95%
×5stories
+106ft-86ft

Overall

25215

Females

10610

F55-59

10610

20K→Half

12.4 - 13.1 mi

Top 95%
×2stories
+19ft-37ft

Overall

25250

Females

10645

F55-59

10645

Half→25K

13.1 - 15.5 mi

Top 93%
×4stories
+66ft-88ft

Overall

24702

Females

10343

F55-59

10343

25K→30K

15.5 - 18.6 mi

Top 92%
×9stories
+181ft-148ft

Overall

24432

Females

10240

F55-59

10240

30K→20M

18.6 - 20.0 mi

Top 89%
×5stories
+64ft-50ft

Overall

23700

Females

9902

F55-59

9902

20M→21M

20.0 - 21.0 mi

Top 91%
×8stories
+106ft-24ft

Overall

24192

Females

10198

F55-59

10198

21M→35K

21.0 - 21.8 mi

Top 96%
×7stories
+17ft-86ft

Overall

25671

Females

10981

F55-59

10981

35K→23M

21.8 - 23.0 mi

Top 86%
×5stories
+23ft-63ft

Overall

23026

Females

9605

F55-59

9605

23M→24M

23.0 - 24.0 mi

Top 88%
×6stories
+12ft-82ft

Overall

23354

Females

9831

F55-59

9831

24M→40K

24.0 - 24.9 mi

Top 91%
×1story
+6ft-20ft

Overall

24192

Females

10277

F55-59

10277

40K→25.2M

24.9 - 25.2 mi

Top 84%
×1story
+13ft-16ft

Overall

22338

Females

9316

F55-59

9316

25.2M→Finish

25.2 - 26.2 mi

Top 88%
×2stories
+22ft-21ft

Overall

23367

Females

9846

F55-59

9846

Passing Analysis

Category:
Athletes Passed
1054
Passed By
590
Net Change
+464
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25256
5K → 10K131209-78#25256#25334
10K → 15K12886+42#25334#25292
15K → 20K8986+3#25292#25289
20K → Half2012+8#25289#25281
Half → 25K12730+97#25281#25184
25K → 30K15819+139#25184#25045
30K → 20M9011+79#25045#24966
20M → 21M6719+48#24966#24918
21M → 35K874-66#24918#24984
35K → 23M894+85#24984#24899
23M → 24M675+62#24899#24837
24M → 40K3025+5#24837#24832
40K → 25.2M163+13#24832#24819
25.2M → Finish347+27#24819#24792
TOTALS1054590+464
📊

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