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BOSTON MARATHON 2023

Jill Stockford

Bib: 21648•F

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 45%
Division (F50-54)
#0 / 1207
Top 39%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:20
Rank: #19444
Start → 5K
27:20 | 8:48/mi
10K· 6.21 mi
53:54
Rank: #18974 (+470)
5K → 10K
26:34 | 8:33/mi
15K· 9.32 mi
1:20:43
Rank: #18808 (+166)
10K → 15K
26:49 | 8:38/mi
20K· 12.43 mi
1:47:14
Rank: #18380 (+428)
15K → 20K
26:31 | 8:32/mi
Half· 13.11 mi
1:52:54
Rank: #18284 (+96)
20K → Half
5:40 | 8:18/mi
25K· 15.53 mi
2:13:34
Rank: #17934 (+350)
Half → 25K
20:40 | 8:31/mi
30K· 18.64 mi
2:40:33
Rank: #17444 (+490)
25K → 30K
26:59 | 8:41/mi
20M
2:52:32
Rank: #17284 (+160)
30K → 20M
11:59 | 8:49/mi
21M
3:02:08
Rank: #17226 (+58)
20M → 21M
9:36 | 9:36/mi
35K· 21.75 mi
3:08:51
Rank: #17245 (-19)
21M → 35K
6:43 | 8:59/mi
23M
3:20:16
Rank: #17217 (+28)
35K → 23M
11:25 | 9:07/mi
24M
3:28:56
Rank: #17125 (+92)
23M → 24M
8:40 | 8:40/mi
40K· 24.85 mi
3:36:33
Rank: #17072 (+53)
24M → 40K
7:37 | 8:54/mi
25.2M
3:39:54
Rank: #17062 (+10)
40K → 25.2M
3:21 | 9:43/mi
Finish· 26.22 mi
3:48:57
Rank: #17094 (-32)
25.2M → Finish
9:03 | 8:53/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:54
Pace8:37 /mi
2nd Half
Distance13.11 mi
Time1:56:03
Pace8:51 /mi
📊Positive Split: 2.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:4827:208:4827:20
8:48
-
10K
6.21 mi11:46:2253:548:4026:34
8:33
-0:15
15K
9.32 mi12:13:111:20:438:4026:49
8:38
+0:05
20K
12.43 mi12:39:421:47:148:3826:31
8:32
-0:06
Half
13.11 mi12:45:221:52:548:375:40
8:18
-0:14
25K
15.53 mi13:06:022:13:348:3620:40
8:31
+0:13
30K
18.64 mi13:33:012:40:338:3726:59
8:41
+0:10
20M
20.00 mi13:45:002:52:328:3811:59
8:49
+0:08
21M
21.00 mi13:54:363:02:088:409:36
9:36
+0:47
35K
21.75 mi14:01:193:08:518:416:43
8:59
-0:37
23M
23.00 mi14:12:443:20:168:4211:25
9:07
+0:08
24M
24.00 mi14:21:243:28:568:428:40
8:40
-0:27
40K
24.85 mi14:29:013:36:338:437:37
8:54
+0:14
25.2M
25.20 mi14:32:223:39:548:443:21
9:43
+0:49
Finish
26.22 mi14:41:253:48:578:449:03
8:53
-0:50

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

8:18 /mi

Average Pace

8:44 /mi

Slowest Pace

9:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:36:00

94% of race

Time at Steady Pace

12:57

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:44 /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 mi11:19:4827:208:4827:20
8:48
#19444
10K
6.21 mi11:46:2253:548:4026:34
8:33
#18974
15K
9.32 mi12:13:111:20:438:4026:49
8:38
#18808
20K
12.43 mi12:39:421:47:148:3826:31
8:32
#18380
Half
13.11 mi12:45:221:52:548:375:40
8:18
#18284
25K
15.53 mi13:06:022:13:348:3620:40
8:31
#17934
30K
18.64 mi13:33:012:40:338:3726:59
8:41
#17444
20M
20.00 mi13:45:002:52:328:3811:59
8:49
#17284
21M
21.00 mi13:54:363:02:088:409:36
9:36
#17226
35K
21.75 mi14:01:193:08:518:416:43
8:59
#17245
23M
23.00 mi14:12:443:20:168:4211:25
9:07
#17217
24M
24.00 mi14:21:243:28:568:428:40
8:40
#17125
40K
24.85 mi14:29:013:36:338:437:37
8:54
#17072
25.2M
25.20 mi14:32:223:39:548:443:21
9:43
#17062
Finish
26.22 mi14:41:253:48:578:449:03
8:53
#17094
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi194447473747318631(Top 70%)6874(Top 60%)6874(Top 570%)
10K6.21 mi3.10 mi18974+4707133+3407133+34018571(Top 70%)6811(Top 60%)6811(Top 564%)
15K9.32 mi3.11 mi18808+1667011+1227011+12218631(Top 70%)6874(Top 60%)6874(Top 570%)
20K12.43 mi3.11 mi18380+4286740+2716740+27117092(Top 64%)5981(Top 52%)5981(Top 496%)
Half13.11 mi0.68 mi18284+966683+576683+5716576(Top 62%)5659(Top 50%)5659(Top 469%)
25K15.53 mi2.42 mi17934+3506501+1826501+18216371(Top 61%)5659(Top 50%)5659(Top 469%)
30K18.64 mi3.11 mi17444+4906221+2806221+28015444(Top 58%)5194(Top 45%)5194(Top 430%)
20M20.00 mi1.36 mi17284+1606147+746147+7415564(Top 58%)5321(Top 47%)5321(Top 441%)
21M21.00 mi1.00 mi17226+586128+196128+1916442(Top 62%)5881(Top 51%)5881(Top 487%)
35K21.75 mi0.75 mi17245-196150-226150-2217828(Top 67%)6730(Top 59%)6730(Top 558%)
23M23.00 mi1.25 mi17217+286148+26148+216644(Top 63%)6107(Top 53%)6107(Top 506%)
24M24.00 mi1.00 mi17125+926112+366112+3615498(Top 58%)5538(Top 48%)5538(Top 459%)
40K24.85 mi0.85 mi17072+536102+106102+1015689(Top 59%)5681(Top 50%)5681(Top 471%)
25.2M25.20 mi0.35 mi17062+106096+66096+616242(Top 61%)6009(Top 53%)6009(Top 498%)
Finish26.22 mi1.02 mi17094-326127-316127-3117434(Top 65%)6608(Top 58%)6608(Top 547%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21stories
+97ft-345ft

Overall

18631

Females

6874

F50-54

6874

5K→10K

3.1 - 6.2 mi

Top 70%
×5stories
+79ft-138ft

Overall

18571

Females

6811

F50-54

6811

10K→15K

6.2 - 9.3 mi

Top 70%
×3stories
+67ft-78ft

Overall

18631

Females

6874

F50-54

6874

15K→20K

9.3 - 12.4 mi

Top 64%
×5stories
+106ft-86ft

Overall

17092

Females

5981

F50-54

5981

20K→Half

12.4 - 13.1 mi

Top 62%
×2stories
+19ft-37ft

Overall

16576

Females

5659

F50-54

5659

Half→25K

13.1 - 15.5 mi

Top 61%
×4stories
+66ft-88ft

Overall

16371

Females

5659

F50-54

5659

25K→30K

15.5 - 18.6 mi

Top 58%
×9stories
+181ft-148ft

Overall

15444

Females

5194

F50-54

5194

30K→20M

18.6 - 20.0 mi

Top 58%
×5stories
+64ft-50ft

Overall

15564

Females

5321

F50-54

5321

20M→21M

20.0 - 21.0 mi

Top 62%
×8stories
+106ft-24ft

Overall

16442

Females

5881

F50-54

5881

21M→35K

21.0 - 21.8 mi

Top 67%
×7stories
+17ft-86ft

Overall

17828

Females

6730

F50-54

6730

35K→23M

21.8 - 23.0 mi

Top 63%
×5stories
+23ft-63ft

Overall

16644

Females

6107

F50-54

6107

23M→24M

23.0 - 24.0 mi

Top 58%
×6stories
+12ft-82ft

Overall

15498

Females

5538

F50-54

5538

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

15689

Females

5681

F50-54

5681

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

16242

Females

6009

F50-54

6009

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2stories
+22ft-21ft

Overall

17434

Females

6608

F50-54

6608

Passing Analysis

Category:
Athletes Passed
3041
Passed By
691
Net Change
+2350
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19444
5K → 10K640170+470#19444#18974
10K → 15K280114+166#18974#18808
15K → 20K44315+428#18808#18380
20K → Half1004+96#18380#18284
Half → 25K36212+350#18284#17934
25K → 30K50313+490#17934#17444
30K → 20M18020+160#17444#17284
20M → 21M11456+58#17284#17226
21M → 35K3857-19#17226#17245
35K → 23M9668+28#17245#17217
23M → 24M11624+92#17217#17125
24M → 40K8128+53#17125#17072
40K → 25.2M2717+10#17072#17062
25.2M → Finish6193-32#17062#17094
TOTALS3041691+2350
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing