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BOSTON MARATHON 2023

Cassie Macrae

Bib: 11908•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 42%
Gender (Female)
#0 / 11423
Top 24%
Division (F18-39)
#0 / 4884
Top 40%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:45
Rank: #6269
Start → 5K
21:45 | 7:00/mi
10K· 6.21 mi
43:53
Rank: #6876 (-607)
5K → 10K
22:08 | 7:07/mi
15K· 9.32 mi
1:06:42
Rank: #7466 (-590)
10K → 15K
22:49 | 7:21/mi
20K· 12.43 mi
1:31:04
Rank: #8454 (-988)
15K → 20K
24:22 | 7:51/mi
Half· 13.11 mi
1:36:11
Rank: #8554 (-100)
20K → Half
5:07 | 7:30/mi
25K· 15.53 mi
1:55:00
Rank: #8859 (-305)
Half → 25K
18:49 | 7:46/mi
30K· 18.64 mi
2:20:47
Rank: #9610 (-751)
25K → 30K
25:47 | 8:18/mi
20M
2:32:32
Rank: #9949 (-339)
30K → 20M
11:45 | 8:39/mi
21M
2:41:51
Rank: #10282 (-333)
20M → 21M
9:19 | 9:19/mi
35K· 21.75 mi
2:48:18
Rank: #10493 (-211)
21M → 35K
6:27 | 8:37/mi
23M
2:59:15
Rank: #10762 (-269)
35K → 23M
10:57 | 8:45/mi
24M
3:07:50
Rank: #10949 (-187)
23M → 24M
8:35 | 8:35/mi
40K· 24.85 mi
3:15:22
Rank: #11123 (-174)
24M → 40K
7:32 | 8:49/mi
25.2M
3:18:29
Rank: #11146 (-23)
40K → 25.2M
3:07 | 9:02/mi
Finish· 26.22 mi
3:26:56
Rank: #11264 (-118)
25.2M → Finish
8:27 | 8:18/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:11
Pace7:20 /mi
2nd Half
Distance13.11 mi
Time1:50:45
Pace8:27 /mi
📊Positive Split: 15.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:37:1021:457:0021:45
7:00
-
10K
6.21 mi11:59:1843:537:0422:08
7:07
+0:07
15K
9.32 mi12:22:071:06:427:0922:49
7:21
+0:14
20K
12.43 mi12:46:291:31:047:2024:22
7:51
+0:30
Half
13.11 mi12:51:361:36:117:205:07
7:30
-0:21
25K
15.53 mi13:10:251:55:007:2418:49
7:46
+0:16
30K
18.64 mi13:36:122:20:477:3325:47
8:18
+0:32
20M
20.00 mi13:47:572:32:327:3811:45
8:39
+0:21
21M
21.00 mi13:57:162:41:517:429:19
9:19
+0:40
35K
21.75 mi14:03:432:48:187:446:27
8:37
-0:42
23M
23.00 mi14:14:402:59:157:4810:57
8:45
+0:08
24M
24.00 mi14:23:153:07:507:508:35
8:35
-0:10
40K
24.85 mi14:30:473:15:227:527:32
8:49
+0:14
25.2M
25.20 mi14:33:543:18:297:533:07
9:02
+0:13
Finish
26.22 mi14:42:213:26:567:548:27
8:18
-0:44

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

7:00 /mi

Average Pace

7:54 /mi

Slowest Pace

9:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:55:00

56% of race

Time at Steady Pace

49:16

24% of race

Time at Slower Pace

42:40

21% of race

Average Pace: 7:54 /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 mi11:37:1021:457:0021:45
7:00
#6269
10K
6.21 mi11:59:1843:537:0422:08
7:07
#6876
15K
9.32 mi12:22:071:06:427:0922:49
7:21
#7466
20K
12.43 mi12:46:291:31:047:2024:22
7:51
#8454
Half
13.11 mi12:51:361:36:117:205:07
7:30
#8554
25K
15.53 mi13:10:251:55:007:2418:49
7:46
#8859
30K
18.64 mi13:36:122:20:477:3325:47
8:18
#9610
20M
20.00 mi13:47:572:32:327:3811:45
8:39
#9949
21M
21.00 mi13:57:162:41:517:429:19
9:19
#10282
35K
21.75 mi14:03:432:48:187:446:27
8:37
#10493
23M
23.00 mi14:14:402:59:157:4810:57
8:45
#10762
24M
24.00 mi14:23:153:07:507:508:35
8:35
#10949
40K
24.85 mi14:30:473:15:227:527:32
8:49
#11123
25.2M
25.20 mi14:33:543:18:297:533:07
9:02
#11146
Finish
26.22 mi14:42:213:26:567:548:27
8:18
#11264
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi62695515518908(Top 33%)1417(Top 12%)1417(Top 29%)
10K6.21 mi3.10 mi6876-607698-147698-1477599(Top 29%)919(Top 8%)919(Top 19%)
15K9.32 mi3.11 mi7466-590860-162860-1628908(Top 33%)1417(Top 12%)1417(Top 29%)
20K12.43 mi3.11 mi8454-9881219-3591219-35912110(Top 45%)3033(Top 27%)3033(Top 62%)
Half13.11 mi0.68 mi8554-1001255-361255-3610319(Top 39%)2052(Top 18%)2052(Top 42%)
25K15.53 mi2.42 mi8859-3051395-1401395-14010811(Top 41%)2396(Top 21%)2396(Top 49%)
30K18.64 mi3.11 mi9610-7511719-3241719-32413024(Top 49%)3771(Top 33%)3771(Top 77%)
20M20.00 mi1.36 mi9949-3391896-1771896-17714551(Top 55%)4729(Top 41%)4729(Top 97%)
21M21.00 mi1.00 mi10282-3332090-1942090-19415073(Top 57%)5090(Top 45%)5090(Top 104%)
35K21.75 mi0.75 mi10493-2112213-1232213-12315969(Top 60%)5659(Top 50%)5659(Top 116%)
23M23.00 mi1.25 mi10762-2692389-1762389-17614670(Top 55%)4983(Top 44%)4983(Top 102%)
24M24.00 mi1.00 mi10949-1872499-1102499-11014966(Top 56%)5204(Top 46%)5204(Top 107%)
40K24.85 mi0.85 mi11123-1742611-1122611-11215134(Top 57%)5364(Top 47%)5364(Top 110%)
25.2M25.20 mi0.35 mi11146-232638-272638-2712758(Top 48%)4091(Top 36%)4091(Top 84%)
Finish26.22 mi1.02 mi11264-1182724-862724-8614064(Top 53%)4768(Top 42%)4768(Top 98%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21stories
+97ft-345ft

Overall

8908

Females

1417

F18-39

1417

5K→10K

3.1 - 6.2 mi

Top 29%
×5stories
+79ft-138ft

Overall

7599

Females

919

F18-39

919

10K→15K

6.2 - 9.3 mi

Top 33%
×3stories
+67ft-78ft

Overall

8908

Females

1417

F18-39

1417

15K→20K

9.3 - 12.4 mi

Top 45%
×5stories
+106ft-86ft

Overall

12110

Females

3033

F18-39

3033

20K→Half

12.4 - 13.1 mi

Top 39%
×2stories
+19ft-37ft

Overall

10319

Females

2052

F18-39

2052

Half→25K

13.1 - 15.5 mi

Top 41%
×4stories
+66ft-88ft

Overall

10811

Females

2396

F18-39

2396

25K→30K

15.5 - 18.6 mi

Top 49%
×9stories
+181ft-148ft

Overall

13024

Females

3771

F18-39

3771

30K→20M

18.6 - 20.0 mi

Top 55%
×5stories
+64ft-50ft

Overall

14551

Females

4729

F18-39

4729

20M→21M

20.0 - 21.0 mi

Top 57%
×8stories
+106ft-24ft

Overall

15073

Females

5090

F18-39

5090

21M→35K

21.0 - 21.8 mi

Top 60%
×7stories
+17ft-86ft

Overall

15969

Females

5659

F18-39

5659

35K→23M

21.8 - 23.0 mi

Top 55%
×5stories
+23ft-63ft

Overall

14670

Females

4983

F18-39

4983

23M→24M

23.0 - 24.0 mi

Top 56%
×6stories
+12ft-82ft

Overall

14966

Females

5204

F18-39

5204

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

15134

Females

5364

F18-39

5364

40K→25.2M

24.9 - 25.2 mi

Top 48%
×1story
+13ft-16ft

Overall

12758

Females

4091

F18-39

4091

25.2M→Finish

25.2 - 26.2 mi

Top 53%
×2stories
+22ft-21ft

Overall

14064

Females

4768

F18-39

4768

Passing Analysis

Category:
Athletes Passed
354
Passed By
5347
Net Change
-4995
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6269
5K → 10K35642-607#6269#6876
10K → 15K18608-590#6876#7466
15K → 20K8996-988#7466#8454
20K → Half2102-100#8454#8554
Half → 25K32337-305#8554#8859
25K → 30K39790-751#8859#9610
30K → 20M32371-339#9610#9949
20M → 21M23354-333#9949#10282
21M → 35K15226-211#10282#10493
35K → 23M29298-269#10493#10762
23M → 24M27214-187#10762#10949
24M → 40K28202-174#10949#11123
40K → 25.2M2649-23#11123#11146
25.2M → Finish40158-118#11146#11264
TOTALS3545347-4995
📊

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