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BOSTON MARATHON 2023

Melissa Mackenzie

Bib: 27482•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
30:35
Rank: #23038
Start → 5K
30:35 | 9:51/mi
10K· 6.21 mi
1:00:41
Rank: #23088 (-50)
5K → 10K
30:06 | 9:41/mi
15K· 9.32 mi
1:31:34
Rank: #23210 (-122)
10K → 15K
30:53 | 9:56/mi
20K· 12.43 mi
2:01:07
Rank: #22790 (+420)
15K → 20K
29:33 | 9:31/mi
Half· 13.11 mi
2:07:34
Rank: #22744 (+46)
20K → Half
6:27 | 9:27/mi
25K· 15.53 mi
2:32:13
Rank: #22715 (+29)
Half → 25K
24:39 | 10:10/mi
30K· 18.64 mi
3:05:09
Rank: #22640 (+75)
25K → 30K
32:56 | 10:36/mi
20M
3:19:24
Rank: #22564 (+76)
30K → 20M
14:15 | 10:29/mi
21M
3:29:40
Rank: #22379 (+185)
20M → 21M
10:16 | 10:16/mi
35K· 21.75 mi
3:36:52
Rank: #22304 (+75)
21M → 35K
7:12 | 9:37/mi
23M
3:50:13
Rank: #22272 (+32)
35K → 23M
13:21 | 10:40/mi
24M
4:00:29
Rank: #22233 (+39)
23M → 24M
10:16 | 10:16/mi
40K· 24.85 mi
4:09:06
Rank: #22161 (+72)
24M → 40K
8:37 | 10:05/mi
25.2M
4:12:37
Rank: #22105 (+56)
40K → 25.2M
3:31 | 10:12/mi
Finish· 26.22 mi
4:21:22
Rank: #21960 (+145)
25.2M → Finish
8:45 | 8:35/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:07:34
Pace9:44 /mi
2nd Half
Distance13.11 mi
Time2:13:48
Pace10:12 /mi
📊Positive Split: 4.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:1930:359:5130:35
9:51
-
10K
6.21 mi12:23:251:00:419:4630:06
9:41
-0:10
15K
9.32 mi12:54:181:31:349:4930:53
9:56
+0:15
20K
12.43 mi13:23:512:01:079:4529:33
9:31
-0:25
Half
13.11 mi13:30:182:07:349:446:27
9:27
-0:04
25K
15.53 mi13:54:572:32:139:4824:39
10:10
+0:43
30K
18.64 mi14:27:533:05:099:5632:56
10:36
+0:26
20M
20.00 mi14:42:083:19:249:5814:15
10:29
-0:07
21M
21.00 mi14:52:243:29:409:5910:16
10:16
-0:13
35K
21.75 mi14:59:363:36:529:587:12
9:37
-0:39
23M
23.00 mi15:12:573:50:1310:0113:21
10:40
+1:03
24M
24.00 mi15:23:134:00:2910:0110:16
10:16
-0:24
40K
24.85 mi15:31:504:09:0610:018:37
10:05
-0:11
25.2M
25.20 mi15:35:214:12:3710:013:31
10:12
+0:07
Finish
26.22 mi15:44:064:21:229:598:45
8:35
-1:37

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

8:35 /mi

Average Pace

9:59 /mi

Slowest Pace

10:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:22:03

31% of race

Time at Steady Pace

1:58:47

45% of race

Time at Slower Pace

1:00:32

23% of race

Average Pace: 9:58 /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 mi11:53:1930:359:5130:35
9:51
#23038
10K
6.21 mi12:23:251:00:419:4630:06
9:41
#23088
15K
9.32 mi12:54:181:31:349:4930:53
9:56
#23210
20K
12.43 mi13:23:512:01:079:4529:33
9:31
#22790
Half
13.11 mi13:30:182:07:349:446:27
9:27
#22744
25K
15.53 mi13:54:572:32:139:4824:39
10:10
#22715
30K
18.64 mi14:27:533:05:099:5632:56
10:36
#22640
20M
20.00 mi14:42:083:19:249:5814:15
10:29
#22564
21M
21.00 mi14:52:243:29:409:5910:16
10:16
#22379
35K
21.75 mi14:59:363:36:529:587:12
9:37
#22304
23M
23.00 mi15:12:573:50:1310:0113:21
10:40
#22272
24M
24.00 mi15:23:134:00:2910:0110:16
10:16
#22233
40K
24.85 mi15:31:504:09:0610:018:37
10:05
#22161
25.2M
25.20 mi15:35:214:12:3710:013:31
10:12
#22105
Finish
26.22 mi15:44:064:21:229:598:45
8:35
#21960
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi230389412941223399(Top 88%)9546(Top 84%)9546(Top 195%)
10K6.21 mi3.10 mi23088-509411+19411+123025(Top 86%)9344(Top 82%)9344(Top 191%)
15K9.32 mi3.11 mi23210-1229460-499460-4923399(Top 88%)9546(Top 84%)9546(Top 195%)
20K12.43 mi3.11 mi22790+4209235+2259235+22521598(Top 81%)8574(Top 75%)8574(Top 176%)
Half13.11 mi0.68 mi22744+469214+219214+2122003(Top 83%)8789(Top 77%)8789(Top 180%)
25K15.53 mi2.42 mi22715+299216-29216-222539(Top 85%)9137(Top 80%)9137(Top 187%)
30K18.64 mi3.11 mi22640+759202+149202+1422416(Top 84%)9134(Top 80%)9134(Top 187%)
20M20.00 mi1.36 mi22564+769172+309172+3021707(Top 82%)8814(Top 77%)8814(Top 180%)
21M21.00 mi1.00 mi22379+1859078+949078+9418955(Top 71%)7319(Top 64%)7319(Top 150%)
35K21.75 mi0.75 mi22304+759039+399039+3920257(Top 76%)8095(Top 71%)8095(Top 166%)
23M23.00 mi1.25 mi22272+329023+169023+1621687(Top 81%)8900(Top 78%)8900(Top 182%)
24M24.00 mi1.00 mi22233+399009+149009+1421494(Top 81%)8844(Top 77%)8844(Top 181%)
40K24.85 mi0.85 mi22161+728974+358974+3520202(Top 76%)8171(Top 72%)8171(Top 167%)
25.2M25.20 mi0.35 mi22105+568951+238951+2318196(Top 68%)7076(Top 62%)7076(Top 145%)
Finish26.22 mi1.02 mi21960+1458885+668885+6615959(Top 60%)5794(Top 51%)5794(Top 119%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21stories
+97ft-345ft

Overall

23399

Females

9546

F18-39

9546

5K→10K

3.1 - 6.2 mi

Top 86%
×5stories
+79ft-138ft

Overall

23025

Females

9344

F18-39

9344

10K→15K

6.2 - 9.3 mi

Top 88%
×3stories
+67ft-78ft

Overall

23399

Females

9546

F18-39

9546

15K→20K

9.3 - 12.4 mi

Top 81%
×5stories
+106ft-86ft

Overall

21598

Females

8574

F18-39

8574

20K→Half

12.4 - 13.1 mi

Top 83%
×2stories
+19ft-37ft

Overall

22003

Females

8789

F18-39

8789

Half→25K

13.1 - 15.5 mi

Top 85%
×4stories
+66ft-88ft

Overall

22539

Females

9137

F18-39

9137

25K→30K

15.5 - 18.6 mi

Top 84%
×9stories
+181ft-148ft

Overall

22416

Females

9134

F18-39

9134

30K→20M

18.6 - 20.0 mi

Top 82%
×5stories
+64ft-50ft

Overall

21707

Females

8814

F18-39

8814

20M→21M

20.0 - 21.0 mi

Top 71%
×8stories
+106ft-24ft

Overall

18955

Females

7319

F18-39

7319

21M→35K

21.0 - 21.8 mi

Top 76%
×7stories
+17ft-86ft

Overall

20257

Females

8095

F18-39

8095

35K→23M

21.8 - 23.0 mi

Top 81%
×5stories
+23ft-63ft

Overall

21687

Females

8900

F18-39

8900

23M→24M

23.0 - 24.0 mi

Top 81%
×6stories
+12ft-82ft

Overall

21494

Females

8844

F18-39

8844

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

20202

Females

8171

F18-39

8171

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

18196

Females

7076

F18-39

7076

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2stories
+22ft-21ft

Overall

15959

Females

5794

F18-39

5794

Passing Analysis

Category:
Athletes Passed
1807
Passed By
729
Net Change
+1078
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23038
5K → 10K194244-50#23038#23088
10K → 15K94216-122#23088#23210
15K → 20K4255+420#23210#22790
20K → Half548+46#22790#22744
Half → 25K11081+29#22744#22715
25K → 30K15378+75#22715#22640
30K → 20M10024+76#22640#22564
20M → 21M1861+185#22564#22379
21M → 35K805+75#22379#22304
35K → 23M7038+32#22304#22272
23M → 24M5617+39#22272#22233
24M → 40K8210+72#22233#22161
40K → 25.2M571+56#22161#22105
25.2M → Finish1461+145#22105#21960
TOTALS1807729+1078
📊

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