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BOSTON MARATHON 2023

Kristen Macglashing

Bib: 26318•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 (F40-44)
#0 / 1878
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
31:44
Rank: #23988
Start → 5K
31:44 | 10:13/mi
10K· 6.21 mi
1:03:50
Rank: #24213 (-225)
5K → 10K
32:06 | 10:20/mi
15K· 9.32 mi
1:35:23
Rank: #24085 (+128)
10K → 15K
31:33 | 10:09/mi
20K· 12.43 mi
2:06:42
Rank: #23815 (+270)
15K → 20K
31:19 | 10:05/mi
Half· 13.11 mi
2:13:29
Rank: #23771 (+44)
20K → Half
6:47 | 9:57/mi
25K· 15.53 mi
2:37:26
Rank: #23481 (+290)
Half → 25K
23:57 | 9:53/mi
30K· 18.64 mi
3:08:31
Rank: #23075 (+406)
25K → 30K
31:05 | 10:00/mi
20M
3:22:14
Rank: #22890 (+185)
30K → 20M
13:43 | 10:06/mi
21M
3:32:33
Rank: #22709 (+181)
20M → 21M
10:19 | 10:19/mi
35K· 21.75 mi
3:39:52
Rank: #22638 (+71)
21M → 35K
7:19 | 9:47/mi
23M
3:52:26
Rank: #22496 (+142)
35K → 23M
12:34 | 10:02/mi
24M
4:02:23
Rank: #22429 (+67)
23M → 24M
9:57 | 9:57/mi
40K· 24.85 mi
4:10:58
Rank: #22349 (+80)
24M → 40K
8:35 | 10:02/mi
25.2M
4:14:31
Rank: #22290 (+59)
40K → 25.2M
3:33 | 10:18/mi
Finish· 26.22 mi
4:23:57
Rank: #22210 (+80)
25.2M → Finish
9:26 | 9:15/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time2:13:29
Pace10:11 /mi
2nd Half✓ Faster
Distance13.11 mi
Time2:10:28
Pace9:57 /mi
📊Negative Split: 2.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:55:2431:4410:1331:44
10:13
-
10K
6.21 mi12:27:301:03:5010:1632:06
10:20
+0:07
15K
9.32 mi12:59:031:35:2310:1431:33
10:09
-0:11
20K
12.43 mi13:30:222:06:4210:1231:19
10:05
-0:04
Half
13.11 mi13:37:092:13:2910:116:47
9:57
-0:08
25K
15.53 mi14:01:062:37:2610:0823:57
9:53
-0:04
30K
18.64 mi14:32:113:08:3110:0731:05
10:00
+0:07
20M
20.00 mi14:45:543:22:1410:0713:43
10:06
+0:06
21M
21.00 mi14:56:133:32:3310:0710:19
10:19
+0:13
35K
21.75 mi15:03:323:39:5210:077:19
9:47
-0:32
23M
23.00 mi15:16:063:52:2610:0612:34
10:02
+0:15
24M
24.00 mi15:26:034:02:2310:069:57
9:57
-0:05
40K
24.85 mi15:34:384:10:5810:068:35
10:02
+0:05
25.2M
25.20 mi15:38:114:14:3110:063:33
10:18
+0:16
Finish
26.22 mi15:47:374:23:5710:049:26
9:15
-1:03

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

9:15 /mi

Average Pace

10:04 /mi

Slowest Pace

10:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:06:15

71% of race

Time at Steady Pace

1:17:42

29% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 10:04 /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 mi11:55:2431:4410:1331:44
10:13
#23988
10K
6.21 mi12:27:301:03:5010:1632:06
10:20
#24213
15K
9.32 mi12:59:031:35:2310:1431:33
10:09
#24085
20K
12.43 mi13:30:222:06:4210:1231:19
10:05
#23815
Half
13.11 mi13:37:092:13:2910:116:47
9:57
#23771
25K
15.53 mi14:01:062:37:2610:0823:57
9:53
#23481
30K
18.64 mi14:32:113:08:3110:0731:05
10:00
#23075
20M
20.00 mi14:45:543:22:1410:0713:43
10:06
#22890
21M
21.00 mi14:56:133:32:3310:0710:19
10:19
#22709
35K
21.75 mi15:03:323:39:5210:077:19
9:47
#22638
23M
23.00 mi15:16:063:52:2610:0612:34
10:02
#22496
24M
24.00 mi15:26:034:02:2310:069:57
9:57
#22429
40K
24.85 mi15:34:384:10:5810:068:35
10:02
#22349
25.2M
25.20 mi15:38:114:14:3110:063:33
10:18
#22290
Finish
26.22 mi15:47:374:23:5710:049:26
9:15
#22210
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi239889883988323788(Top 89%)9771(Top 86%)9771(Top 520%)
10K6.21 mi3.10 mi24213-22510003-12010003-12024358(Top 91%)10091(Top 88%)10091(Top 537%)
15K9.32 mi3.11 mi24085+1289938+659938+6523788(Top 89%)9771(Top 86%)9771(Top 520%)
20K12.43 mi3.11 mi23815+2709788+1509788+15023088(Top 87%)9397(Top 82%)9397(Top 500%)
Half13.11 mi0.68 mi23771+449761+279761+2723164(Top 87%)9443(Top 83%)9443(Top 503%)
25K15.53 mi2.42 mi23481+2909609+1529609+15221932(Top 82%)8801(Top 77%)8801(Top 469%)
30K18.64 mi3.11 mi23075+4069427+1829427+18221050(Top 79%)8375(Top 73%)8375(Top 446%)
20M20.00 mi1.36 mi22890+1859342+859342+8520742(Top 78%)8276(Top 72%)8276(Top 441%)
21M21.00 mi1.00 mi22709+1819254+889254+8819091(Top 72%)7396(Top 65%)7396(Top 394%)
35K21.75 mi0.75 mi22638+719228+269228+2620724(Top 78%)8355(Top 73%)8355(Top 445%)
23M23.00 mi1.25 mi22496+1429152+769152+7620116(Top 76%)8029(Top 70%)8029(Top 428%)
24M24.00 mi1.00 mi22429+679123+299123+2920680(Top 78%)8378(Top 73%)8378(Top 446%)
40K24.85 mi0.85 mi22349+809083+409083+4020096(Top 75%)8114(Top 71%)8114(Top 432%)
25.2M25.20 mi0.35 mi22290+599051+329051+3218526(Top 70%)7259(Top 64%)7259(Top 387%)
Finish26.22 mi1.02 mi22210+809015+369015+3619218(Top 72%)7572(Top 66%)7572(Top 403%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 89%
×21stories
+97ft-345ft

Overall

23788

Females

9771

F40-44

9771

5K→10K

3.1 - 6.2 mi

Top 91%
×5stories
+79ft-138ft

Overall

24358

Females

10091

F40-44

10091

10K→15K

6.2 - 9.3 mi

Top 89%
×3stories
+67ft-78ft

Overall

23788

Females

9771

F40-44

9771

15K→20K

9.3 - 12.4 mi

Top 87%
×5stories
+106ft-86ft

Overall

23088

Females

9397

F40-44

9397

20K→Half

12.4 - 13.1 mi

Top 87%
×2stories
+19ft-37ft

Overall

23164

Females

9443

F40-44

9443

Half→25K

13.1 - 15.5 mi

Top 82%
×4stories
+66ft-88ft

Overall

21932

Females

8801

F40-44

8801

25K→30K

15.5 - 18.6 mi

Top 79%
×9stories
+181ft-148ft

Overall

21050

Females

8375

F40-44

8375

30K→20M

18.6 - 20.0 mi

Top 78%
×5stories
+64ft-50ft

Overall

20742

Females

8276

F40-44

8276

20M→21M

20.0 - 21.0 mi

Top 72%
×8stories
+106ft-24ft

Overall

19091

Females

7396

F40-44

7396

21M→35K

21.0 - 21.8 mi

Top 78%
×7stories
+17ft-86ft

Overall

20724

Females

8355

F40-44

8355

35K→23M

21.8 - 23.0 mi

Top 76%
×5stories
+23ft-63ft

Overall

20116

Females

8029

F40-44

8029

23M→24M

23.0 - 24.0 mi

Top 78%
×6stories
+12ft-82ft

Overall

20680

Females

8378

F40-44

8378

24M→40K

24.0 - 24.9 mi

Top 75%
×1story
+6ft-20ft

Overall

20096

Females

8114

F40-44

8114

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

18526

Females

7259

F40-44

7259

25.2M→Finish

25.2 - 26.2 mi

Top 72%
×2stories
+22ft-21ft

Overall

19218

Females

7572

F40-44

7572

Passing Analysis

Category:
Athletes Passed
2238
Passed By
460
Net Change
+1778
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23988
5K → 10K104329-225#23988#24213
10K → 15K19971+128#24213#24085
15K → 20K29121+270#24085#23815
20K → Half473+44#23815#23771
Half → 25K2955+290#23771#23481
25K → 30K4082+406#23481#23075
30K → 20M1905+185#23075#22890
20M → 21M1832+181#22890#22709
21M → 35K754+71#22709#22638
35K → 23M1475+142#22638#22496
23M → 24M736+67#22496#22429
24M → 40K855+80#22429#22349
40K → 25.2M590+59#22349#22290
25.2M → Finish822+80#22290#22210
TOTALS2238460+1778
📊

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