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BOSTON MARATHON 2023

Brenda Mcrae

Bib: 7635•F

CT

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0:00
0:00
/ mi
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Overall
#0 / 26622
Top 43%
Gender (Female)
#0 / 11423
Top 25%
Age Group (F18-39)
#0 / 4884
Top 42%
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
24:45
Rank: #13769
Start → 5K
24:45 | 7:58/mi
10K· 6.21 mi
50:33
Rank: #15344 (-1575)
5K → 10K
25:48 | 8:18/mi
15K· 9.32 mi
1:15:46
Rank: #15329 (+15)
10K → 15K
25:13 | 8:07/mi
20K· 12.43 mi
1:40:50
Rank: #14972 (+357)
15K → 20K
25:04 | 8:04/mi
Half· 13.11 mi
1:46:13
Rank: #14899 (+73)
20K → Half
5:23 | 7:53/mi
25K· 15.53 mi
2:05:18
Rank: #14388 (+511)
Half → 25K
19:05 | 7:52/mi
30K· 18.64 mi
2:29:52
Rank: #13595 (+793)
25K → 30K
24:34 | 7:54/mi
20M
2:40:25
Rank: #13214 (+381)
30K → 20M
10:33 | 7:46/mi
21M
2:48:38
Rank: #12902 (+312)
20M → 21M
8:13 | 8:13/mi
35K· 21.75 mi
2:54:10
Rank: #12686 (+216)
21M → 35K
5:32 | 7:24/mi
23M
3:03:40
Rank: #12329 (+357)
35K → 23M
9:30 | 7:35/mi
24M
3:11:13
Rank: #12138 (+191)
23M → 24M
7:33 | 7:33/mi
40K· 24.85 mi
3:17:44
Rank: #11932 (+206)
24M → 40K
6:31 | 7:37/mi
25.2M
3:20:29
Rank: #11830 (+102)
40K → 25.2M
2:45 | 7:58/mi
Finish· 26.22 mi
3:27:45
Rank: #11533 (+297)
25.2M → Finish
7:16 | 7:08/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st Half
via Half
Distance13.11 mi
Time1:46:13
Pace8:06 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:41:32
Pace7:45 /mi
📊Negative Split: 4.4% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:31:1724:457:5824:45
7:58
-
10K
6.21 mi10:57:0550:338:0825:48
8:18
+0:20
15K
9.32 mi11:22:181:15:468:0825:13
8:07
-0:11
20K
12.43 mi11:47:221:40:508:0725:04
8:04
-0:03
Half
13.11 mi11:52:451:46:138:065:23
7:53
-0:11
25K
15.53 mi12:11:502:05:188:0419:05
7:52
-0:01
30K
18.64 mi12:36:242:29:528:0224:34
7:54
+0:02
20M
20.00 mi12:46:572:40:258:0110:33
7:46
-0:08
21M
21.00 mi12:55:102:48:388:028:13
8:13
+0:27
35K
21.75 mi13:00:422:54:108:015:32
7:24
-0:49
23M
23.00 mi13:10:123:03:407:599:30
7:35
+0:11
24M
24.00 mi13:17:453:11:137:587:33
7:33
-0:02
40K
24.85 mi13:24:163:17:447:576:31
7:37
+0:04
25.2M
25.20 mi13:27:013:20:297:572:45
7:58
+0:21
Finish
26.22 mi13:34:173:27:457:567:16
7:08
-0:50

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

7:08 /mi

Average Pace

7:56 /mi

Slowest Pace

8:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

46:55

23% of race

Time at Steady Pace

2:40:50

77% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:55 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:31:1724:457:5824:45
7:58
#13769
10K
6.21 mi10:57:0550:338:0825:48
8:18
#15344
15K
9.32 mi11:22:181:15:468:0825:13
8:07
#15329
20K
12.43 mi11:47:221:40:508:0725:04
8:04
#14972
Half
13.11 mi11:52:451:46:138:065:23
7:53
#14899
25K
15.53 mi12:11:502:05:188:0419:05
7:52
#14388
30K
18.64 mi12:36:242:29:528:0224:34
7:54
#13595
20M
20.00 mi12:46:572:40:258:0110:33
7:46
#13214
21M
21.00 mi12:55:102:48:388:028:13
8:13
#12902
35K
21.75 mi13:00:422:54:108:015:32
7:24
#12686
23M
23.00 mi13:10:123:03:407:599:30
7:35
#12329
24M
24.00 mi13:17:453:11:137:587:33
7:33
#12138
40K
24.85 mi13:24:163:17:447:576:31
7:37
#11932
25.2M
25.20 mi13:27:013:20:297:572:45
7:58
#11830
Finish
26.22 mi13:34:173:27:457:567:16
7:08
#11533
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi137693881388115278(Top 57%)4838(Top 42%)4838(Top 99%)
10K6.21 mi3.10 mi15344-15754864-9834864-98316949(Top 64%)5839(Top 51%)5839(Top 120%)
15K9.32 mi3.11 mi15329+154870-64870-615278(Top 57%)4838(Top 42%)4838(Top 99%)
20K12.43 mi3.11 mi14972+3574665+2054665+20513991(Top 53%)4098(Top 36%)4098(Top 84%)
Half13.11 mi0.68 mi14899+734625+404625+4013514(Top 51%)3790(Top 33%)3790(Top 78%)
25K15.53 mi2.42 mi14388+5114336+2894336+28911704(Top 44%)2897(Top 25%)2897(Top 59%)
30K18.64 mi3.11 mi13595+7933897+4393897+43910209(Top 38%)2262(Top 20%)2262(Top 46%)
20M20.00 mi1.36 mi13214+3813691+2063691+2068624(Top 32%)1657(Top 15%)1657(Top 34%)
21M21.00 mi1.00 mi12902+3123529+1623529+1628747(Top 33%)1832(Top 16%)1832(Top 38%)
35K21.75 mi0.75 mi12686+2163420+1093420+1097845(Top 29%)1453(Top 13%)1453(Top 30%)
23M23.00 mi1.25 mi12329+3573244+1763244+1767036(Top 26%)1197(Top 10%)1197(Top 25%)
24M24.00 mi1.00 mi12138+1913153+913153+918096(Top 30%)1729(Top 15%)1729(Top 35%)
40K24.85 mi0.85 mi11932+2063060+933060+937504(Top 28%)1577(Top 14%)1577(Top 32%)
25.2M25.20 mi0.35 mi11830+1023004+563004+566470(Top 24%)1254(Top 11%)1254(Top 26%)
Finish26.22 mi1.02 mi11533+2972873+1312873+1316038(Top 23%)1085(Top 9%)1085(Top 22%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21stories
+97ft-345ft

Overall

15278

Females

4838

F18-39

4838

5K→10K

3.1 - 6.2 mi

Top 64%
×5stories
+79ft-138ft

Overall

16949

Females

5839

F18-39

5839

10K→15K

6.2 - 9.3 mi

Top 57%
×3stories
+67ft-78ft

Overall

15278

Females

4838

F18-39

4838

15K→20K

9.3 - 12.4 mi

Top 53%
×5stories
+106ft-86ft

Overall

13991

Females

4098

F18-39

4098

20K→Half

12.4 - 13.1 mi

Top 51%
×2stories
+19ft-37ft

Overall

13514

Females

3790

F18-39

3790

Half→25K

13.1 - 15.5 mi

Top 44%
×4stories
+66ft-88ft

Overall

11704

Females

2897

F18-39

2897

25K→30K

15.5 - 18.6 mi

Top 38%
×9stories
+181ft-148ft

Overall

10209

Females

2262

F18-39

2262

30K→20M

18.6 - 20.0 mi

Top 32%
×5stories
+64ft-50ft

Overall

8624

Females

1657

F18-39

1657

20M→21M

20.0 - 21.0 mi

Top 33%
×8stories
+106ft-24ft

Overall

8747

Females

1832

F18-39

1832

21M→35K

21.0 - 21.8 mi

Top 29%
×7stories
+17ft-86ft

Overall

7845

Females

1453

F18-39

1453

35K→23M

21.8 - 23.0 mi

Top 26%
×5stories
+23ft-63ft

Overall

7036

Females

1197

F18-39

1197

23M→24M

23.0 - 24.0 mi

Top 30%
×6stories
+12ft-82ft

Overall

8096

Females

1729

F18-39

1729

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7504

Females

1577

F18-39

1577

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6470

Females

1254

F18-39

1254

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2stories
+22ft-21ft

Overall

6038

Females

1085

F18-39

1085

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
4079
Passed By
1843
Net Change
+2236
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13769
5K → 10K211596-1575#13769#15344
10K → 15K189174+15#15344#15329
15K → 20K39942+357#15329#14972
20K → Half807+73#14972#14899
Half → 25K5132+511#14899#14388
25K → 30K7963+793#14388#13595
30K → 20M3810+381#13595#13214
20M → 21M3186+312#13214#12902
21M → 35K2171+216#12902#12686
35K → 23M3603+357#12686#12329
23M → 24M1943+191#12329#12138
24M → 40K2104+206#12138#11932
40K → 25.2M1042+102#11932#11830
25.2M → Finish2970+297#11830#11533
TOTALS40791843+2236
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing