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BOSTON MARATHON 2023

Gillian Dean

Bib: 21607•F

BC

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
27:38
Rank: #19964
Start → 5K
27:38 | 8:54/mi
10K· 6.21 mi
55:52
Rank: #20617 (-653)
5K → 10K
28:14 | 9:05/mi
15K· 9.32 mi
1:24:21
Rank: #20794 (-177)
10K → 15K
28:29 | 9:10/mi
20K· 12.43 mi
1:53:13
Rank: #20823 (-29)
15K → 20K
28:52 | 9:17/mi
Half· 13.11 mi
1:59:25
Rank: #20821 (+2)
20K → Half
6:12 | 9:05/mi
25K· 15.53 mi
2:21:57
Rank: #20713 (+108)
Half → 25K
22:32 | 9:18/mi
30K· 18.64 mi
2:52:07
Rank: #20580 (+133)
25K → 30K
30:10 | 9:43/mi
20M
3:05:12
Rank: #20478 (+102)
30K → 20M
13:05 | 9:38/mi
21M
3:15:03
Rank: #20290 (+188)
20M → 21M
9:51 | 9:51/mi
35K· 21.75 mi
3:21:28
Rank: #20151 (+139)
21M → 35K
6:25 | 8:35/mi
23M
3:32:42
Rank: #19924 (+227)
35K → 23M
11:14 | 8:58/mi
24M
3:41:16
Rank: #19742 (+182)
23M → 24M
8:34 | 8:34/mi
40K· 24.85 mi
3:48:48
Rank: #19595 (+147)
24M → 40K
7:32 | 8:49/mi
25.2M
3:52:02
Rank: #19538 (+57)
40K → 25.2M
3:14 | 9:23/mi
Finish· 26.22 mi
4:00:48
Rank: #19443 (+95)
25.2M → Finish
8:46 | 8:36/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:59:25
Pace9:07 /mi
2nd Half
Distance13.11 mi
Time2:01:23
Pace9:16 /mi
📊Positive Split: 1.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:3927:388:5427:38
8:54
-
10K
6.21 mi11:48:5355:528:5928:14
9:05
+0:11
15K
9.32 mi12:17:221:24:219:0328:29
9:10
+0:05
20K
12.43 mi12:46:141:53:139:0728:52
9:17
+0:07
Half
13.11 mi12:52:261:59:259:076:12
9:05
-0:12
25K
15.53 mi13:14:582:21:579:0822:32
9:18
+0:13
30K
18.64 mi13:45:082:52:079:1430:10
9:43
+0:25
20M
20.00 mi13:58:133:05:129:1613:05
9:38
-0:05
21M
21.00 mi14:08:043:15:039:179:51
9:51
+0:13
35K
21.75 mi14:14:293:21:289:166:25
8:35
-1:16
23M
23.00 mi14:25:433:32:429:1511:14
8:58
+0:23
24M
24.00 mi14:34:173:41:169:138:34
8:34
-0:24
40K
24.85 mi14:41:493:48:489:127:32
8:49
+0:15
25.2M
25.20 mi14:45:033:52:029:123:14
9:23
+0:34
Finish
26.22 mi14:53:494:00:489:118:46
8:36
-0:47

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

8:34 /mi

Average Pace

9:11 /mi

Slowest Pace

9:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:07:42

78% of race

Time at Steady Pace

53:06

22% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:11 /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 mi11:20:3927:388:5427:38
8:54
#19964
10K
6.21 mi11:48:5355:528:5928:14
9:05
#20617
15K
9.32 mi12:17:221:24:219:0328:29
9:10
#20794
20K
12.43 mi12:46:141:53:139:0728:52
9:17
#20823
Half
13.11 mi12:52:261:59:259:076:12
9:05
#20821
25K
15.53 mi13:14:582:21:579:0822:32
9:18
#20713
30K
18.64 mi13:45:082:52:079:1430:10
9:43
#20580
20M
20.00 mi13:58:133:05:129:1613:05
9:38
#20478
21M
21.00 mi14:08:043:15:039:179:51
9:51
#20290
35K
21.75 mi14:14:293:21:289:166:25
8:35
#20151
23M
23.00 mi14:25:433:32:429:1511:14
8:58
#19924
24M
24.00 mi14:34:173:41:169:138:34
8:34
#19742
40K
24.85 mi14:41:493:48:489:127:32
8:49
#19595
25.2M
25.20 mi14:45:033:52:029:123:14
9:23
#19538
Finish
26.22 mi14:53:494:00:489:118:46
8:36
#19443
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi199647794779421191(Top 80%)8334(Top 73%)8334(Top 459%)
10K6.21 mi3.10 mi20617-6538097-3038097-30321218(Top 80%)8394(Top 73%)8394(Top 462%)
15K9.32 mi3.11 mi20794-1778173-768173-7621191(Top 80%)8334(Top 73%)8334(Top 459%)
20K12.43 mi3.11 mi20823-298172+18172+120934(Top 79%)8196(Top 72%)8196(Top 451%)
Half13.11 mi0.68 mi20821+28171+18171+120793(Top 78%)8117(Top 71%)8117(Top 447%)
25K15.53 mi2.42 mi20713+1088104+678104+6720191(Top 76%)7801(Top 68%)7801(Top 429%)
30K18.64 mi3.11 mi20580+1338052+528052+5220175(Top 76%)7872(Top 69%)7872(Top 433%)
20M20.00 mi1.36 mi20478+1028007+458007+4519331(Top 73%)7473(Top 65%)7473(Top 411%)
21M21.00 mi1.00 mi20290+1887918+897918+8917474(Top 66%)6476(Top 57%)6476(Top 356%)
35K21.75 mi0.75 mi20151+1397848+707848+7015793(Top 59%)5588(Top 49%)5588(Top 308%)
23M23.00 mi1.25 mi19924+2277721+1277721+12715951(Top 60%)5721(Top 50%)5721(Top 315%)
24M24.00 mi1.00 mi19742+1827618+1037618+10314924(Top 56%)5201(Top 46%)5201(Top 286%)
40K24.85 mi0.85 mi19595+1477541+777541+7715180(Top 57%)5410(Top 47%)5410(Top 298%)
25.2M25.20 mi0.35 mi19538+577517+247517+2414698(Top 55%)5164(Top 45%)5164(Top 284%)
Finish26.22 mi1.02 mi19443+957467+507467+5016045(Top 60%)5846(Top 51%)5846(Top 322%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×21stories
+97ft-345ft

Overall

21191

Females

8334

F45-49

8334

5K→10K

3.1 - 6.2 mi

Top 80%
×5stories
+79ft-138ft

Overall

21218

Females

8394

F45-49

8394

10K→15K

6.2 - 9.3 mi

Top 80%
×3stories
+67ft-78ft

Overall

21191

Females

8334

F45-49

8334

15K→20K

9.3 - 12.4 mi

Top 79%
×5stories
+106ft-86ft

Overall

20934

Females

8196

F45-49

8196

20K→Half

12.4 - 13.1 mi

Top 78%
×2stories
+19ft-37ft

Overall

20793

Females

8117

F45-49

8117

Half→25K

13.1 - 15.5 mi

Top 76%
×4stories
+66ft-88ft

Overall

20191

Females

7801

F45-49

7801

25K→30K

15.5 - 18.6 mi

Top 76%
×9stories
+181ft-148ft

Overall

20175

Females

7872

F45-49

7872

30K→20M

18.6 - 20.0 mi

Top 73%
×5stories
+64ft-50ft

Overall

19331

Females

7473

F45-49

7473

20M→21M

20.0 - 21.0 mi

Top 66%
×8stories
+106ft-24ft

Overall

17474

Females

6476

F45-49

6476

21M→35K

21.0 - 21.8 mi

Top 59%
×7stories
+17ft-86ft

Overall

15793

Females

5588

F45-49

5588

35K→23M

21.8 - 23.0 mi

Top 60%
×5stories
+23ft-63ft

Overall

15951

Females

5721

F45-49

5721

23M→24M

23.0 - 24.0 mi

Top 56%
×6stories
+12ft-82ft

Overall

14924

Females

5201

F45-49

5201

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

15180

Females

5410

F45-49

5410

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

14698

Females

5164

F45-49

5164

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2stories
+22ft-21ft

Overall

16045

Females

5846

F45-49

5846

Passing Analysis

Category:
Athletes Passed
1932
Passed By
1411
Net Change
+521
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19964
5K → 10K87740-653#19964#20617
10K → 15K104281-177#20617#20794
15K → 20K149178-29#20794#20823
20K → Half2927+2#20823#20821
Half → 25K15951+108#20821#20713
25K → 30K20875+133#20713#20580
30K → 20M12725+102#20580#20478
20M → 21M19810+188#20478#20290
21M → 35K1401+139#20290#20151
35K → 23M2281+227#20151#19924
23M → 24M1842+182#19924#19742
24M → 40K1525+147#19742#19595
40K → 25.2M603+57#19595#19538
25.2M → Finish10712+95#19538#19443
TOTALS19321411+521
📊

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