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BOSTON MARATHON 2023

Jane Greenfield

Bib: 27586•F

MA

0:00
0:00
/ mi
Masters
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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
33:23
Rank: #25273
Start → 5K
33:23 | 10:45/mi
10K· 6.21 mi
1:07:15
Rank: #25316 (-43)
5K → 10K
33:52 | 10:54/mi
15K· 9.32 mi
1:47:42
Rank: #26020 (-704)
10K → 15K
40:27 | 13:01/mi
20K· 12.43 mi
2:29:11
Rank: #26157 (-137)
15K → 20K
41:29 | 13:21/mi
Half· 13.11 mi
2:37:06
Rank: #26140 (+17)
20K → Half
7:55 | 11:36/mi
25K· 15.53 mi
3:11:49
Rank: #26231 (-91)
Half → 25K
34:43 | 14:19/mi
30K· 18.64 mi
4:07:15
Rank: #26497 (-266)
25K → 30K
55:26 | 17:51/mi
20M
4:29:45
Rank: #26531 (-34)
30K → 20M
22:30 | 16:33/mi
21M
4:46:17
Rank: #26538 (-7)
20M → 21M
16:32 | 16:32/mi
35K· 21.75 mi
4:57:07
Rank: #26539 (-1)
21M → 35K
10:50 | 14:29/mi
23M
5:15:23
Rank: #26534 (+5)
35K → 23M
18:16 | 14:35/mi
24M
5:29:42
Rank: #26539 (-5)
23M → 24M
14:19 | 14:19/mi
40K· 24.85 mi
5:44:17
Rank: #26560 (-21)
24M → 40K
14:35 | 17:03/mi
25.2M
5:48:42
Rank: #26549 (+11)
40K → 25.2M
4:25 | 12:48/mi
Finish· 26.22 mi
6:00:50
Rank: #26531 (+18)
25.2M → Finish
12:08 | 11:54/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:37:06
Pace11:59 /mi
2nd Half
Distance13.11 mi
Time3:23:44
Pace15:32 /mi
📊Positive Split: 29.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:3733:2310:4533:23
10:45
-
10K
6.21 mi12:24:291:07:1510:4933:52
10:54
+0:09
15K
9.32 mi13:04:561:47:4211:3340:27
13:01
+2:07
20K
12.43 mi13:46:252:29:1112:0041:29
13:21
+0:20
Half
13.11 mi13:54:202:37:0611:597:55
11:36
-1:45
25K
15.53 mi14:29:033:11:4912:2134:43
14:19
+2:43
30K
18.64 mi15:24:294:07:1513:1655:26
17:51
+3:32
20M
20.00 mi15:46:594:29:4513:2922:30
16:33
-1:18
21M
21.00 mi16:03:314:46:1713:3816:32
16:32
-0:01
35K
21.75 mi16:14:214:57:0713:4010:50
14:29
-2:03
23M
23.00 mi16:32:375:15:2313:4318:16
14:35
+0:06
24M
24.00 mi16:46:565:29:4213:4414:19
14:19
-0:16
40K
24.85 mi17:01:315:44:1713:5114:35
17:03
+2:44
25.2M
25.20 mi17:05:565:48:4213:504:25
12:48
-4:15
Finish
26.22 mi17:18:046:00:5013:4612:08
11:54
-0:54

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

10:45 /mi

Average Pace

13:46 /mi

Slowest Pace

17:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:12:10

37% of race

Time at Steady Pace

1:59:37

33% of race

Time at Slower Pace

1:49:03

30% of race

Average Pace: 13:46 /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 mi11:50:3733:2310:4533:23
10:45
#25273
10K
6.21 mi12:24:291:07:1510:4933:52
10:54
#25316
15K
9.32 mi13:04:561:47:4211:3340:27
13:01
#26020
20K
12.43 mi13:46:252:29:1112:0041:29
13:21
#26157
Half
13.11 mi13:54:202:37:0611:597:55
11:36
#26140
25K
15.53 mi14:29:033:11:4912:2134:43
14:19
#26231
30K
18.64 mi15:24:294:07:1513:1655:26
17:51
#26497
20M
20.00 mi15:46:594:29:4513:2922:30
16:33
#26531
21M
21.00 mi16:03:314:46:1713:3816:32
16:32
#26538
35K
21.75 mi16:14:214:57:0713:4010:50
14:29
#26539
23M
23.00 mi16:32:375:15:2313:4318:16
14:35
#26534
24M
24.00 mi16:46:565:29:4213:4414:19
14:19
#26539
40K
24.85 mi17:01:315:44:1713:5114:35
17:03
#26560
25.2M
25.20 mi17:05:565:48:4213:504:25
12:48
#26549
Finish
26.22 mi17:18:046:00:5013:4612:08
11:54
#26531
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi25273105981059826485(Top 99%)11352(Top 99%)11352(Top 625%)
10K6.21 mi3.10 mi25316-4310610-1210610-1225346(Top 95%)10636(Top 93%)10636(Top 585%)
15K9.32 mi3.11 mi26020-70411048-43811048-43826485(Top 99%)11352(Top 99%)11352(Top 625%)
20K12.43 mi3.11 mi26157-13711138-9011138-9026372(Top 99%)11283(Top 99%)11283(Top 621%)
Half13.11 mi0.68 mi26140+1711128+1011128+1025583(Top 96%)10838(Top 95%)10838(Top 596%)
25K15.53 mi2.42 mi26231-9111187-5911187-5926442(Top 99%)11328(Top 99%)11328(Top 623%)
30K18.64 mi3.11 mi26497-26611356-16911356-16926612(Top 100%)11417(Top 100%)11417(Top 628%)
20M20.00 mi1.36 mi26531-3411378-2211378-2226525(Top 100%)11379(Top 100%)11379(Top 626%)
21M21.00 mi1.00 mi26538-711382-411382-426353(Top 99%)11297(Top 99%)11297(Top 622%)
35K21.75 mi0.75 mi26539-111381+111381+126302(Top 99%)11277(Top 99%)11277(Top 621%)
23M23.00 mi1.25 mi26534+511380+111380+126157(Top 98%)11217(Top 98%)11217(Top 617%)
24M24.00 mi1.00 mi26539-511381-111381-126196(Top 98%)11252(Top 99%)11252(Top 619%)
40K24.85 mi0.85 mi26560-2111394-1311394-1326538(Top 100%)11394(Top 100%)11394(Top 627%)
25.2M25.20 mi0.35 mi26549+1111388+611388+623763(Top 89%)10078(Top 88%)10078(Top 555%)
Finish26.22 mi1.02 mi26531+1811378+1011378+1025156(Top 94%)10748(Top 94%)10748(Top 592%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 99%
×21stories
+97ft-345ft

Overall

26485

Females

11352

F45-49

11352

5K→10K

3.1 - 6.2 mi

Top 95%
×5stories
+79ft-138ft

Overall

25346

Females

10636

F45-49

10636

10K→15K

6.2 - 9.3 mi

Top 99%
×3stories
+67ft-78ft

Overall

26485

Females

11352

F45-49

11352

15K→20K

9.3 - 12.4 mi

Top 99%
×5stories
+106ft-86ft

Overall

26372

Females

11283

F45-49

11283

20K→Half

12.4 - 13.1 mi

Top 96%
×2stories
+19ft-37ft

Overall

25583

Females

10838

F45-49

10838

Half→25K

13.1 - 15.5 mi

Top 99%
×4stories
+66ft-88ft

Overall

26442

Females

11328

F45-49

11328

25K→30K

15.5 - 18.6 mi

Top 100%
×9stories
+181ft-148ft

Overall

26612

Females

11417

F45-49

11417

30K→20M

18.6 - 20.0 mi

Top 100%
×5stories
+64ft-50ft

Overall

26525

Females

11379

F45-49

11379

20M→21M

20.0 - 21.0 mi

Top 99%
×8stories
+106ft-24ft

Overall

26353

Females

11297

F45-49

11297

21M→35K

21.0 - 21.8 mi

Top 99%
×7stories
+17ft-86ft

Overall

26302

Females

11277

F45-49

11277

35K→23M

21.8 - 23.0 mi

Top 98%
×5stories
+23ft-63ft

Overall

26157

Females

11217

F45-49

11217

23M→24M

23.0 - 24.0 mi

Top 98%
×6stories
+12ft-82ft

Overall

26196

Females

11252

F45-49

11252

24M→40K

24.0 - 24.9 mi

Top 100%
×1story
+6ft-20ft

Overall

26538

Females

11394

F45-49

11394

40K→25.2M

24.9 - 25.2 mi

Top 89%
×1story
+13ft-16ft

Overall

23763

Females

10078

F45-49

10078

25.2M→Finish

25.2 - 26.2 mi

Top 94%
×2stories
+22ft-21ft

Overall

25156

Females

10748

F45-49

10748

Passing Analysis

Category:
Athletes Passed
236
Passed By
1494
Net Change
-1258
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25273
5K → 10K147190-43#25273#25316
10K → 15K3707-704#25316#26020
15K → 20K9146-137#26020#26157
20K → Half181+17#26157#26140
Half → 25K596-91#26140#26231
25K → 30K1267-266#26231#26497
30K → 20M135-34#26497#26531
20M → 21M18-7#26531#26538
21M → 35K45-1#26538#26539
35K → 23M116+5#26539#26534
23M → 24M510-5#26534#26539
24M → 40K122-21#26539#26560
40K → 25.2M110+11#26560#26549
25.2M → Finish191+18#26549#26531
TOTALS2361494-1258
📊

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