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BOSTON MARATHON 2023

Courtney Alsup

Bib: 9451•F

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 15%
Gender (Female)
#0 / 11423
Top 2%
Division (F18-39)
#0 / 4884
Top 4%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:54
Rank: #3925
Start → 5K
20:54 | 6:44/mi
10K· 6.21 mi
41:37
Rank: #3964 (-39)
5K → 10K
20:43 | 6:40/mi
15K· 9.32 mi
1:02:11
Rank: #3739 (+225)
10K → 15K
20:34 | 6:37/mi
20K· 12.43 mi
1:22:51
Rank: #3578 (+161)
15K → 20K
20:40 | 6:39/mi
Half· 13.11 mi
1:27:20
Rank: #3554 (+24)
20K → Half
4:29 | 6:34/mi
25K· 15.53 mi
1:43:32
Rank: #3473 (+81)
Half → 25K
16:12 | 6:41/mi
30K· 18.64 mi
2:05:16
Rank: #3614 (-141)
25K → 30K
21:44 | 7:00/mi
20M
2:14:58
Rank: #3689 (-75)
30K → 20M
9:42 | 7:08/mi
21M
2:22:33
Rank: #3761 (-72)
20M → 21M
7:35 | 7:35/mi
35K· 21.75 mi
2:27:41
Rank: #3791 (-30)
21M → 35K
5:08 | 6:52/mi
23M
2:36:38
Rank: #3844 (-53)
35K → 23M
8:57 | 7:09/mi
24M
2:43:28
Rank: #3828 (+16)
23M → 24M
6:50 | 6:50/mi
40K· 24.85 mi
2:49:30
Rank: #3843 (-15)
24M → 40K
6:02 | 7:03/mi
25.2M
2:52:01
Rank: #3811 (+32)
40K → 25.2M
2:31 | 7:18/mi
Finish· 26.22 mi
2:58:59
Rank: #3860 (-49)
25.2M → Finish
6:58 | 6:50/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:20
Pace6:40 /mi
2nd Half
Distance13.11 mi
Time1:31:39
Pace6:59 /mi
📊Positive Split: 4.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:2620:546:4420:54
6:44
-
10K
6.21 mi11:07:0941:376:4220:43
6:40
-0:04
15K
9.32 mi11:27:431:02:116:4020:34
6:37
-0:03
20K
12.43 mi11:48:231:22:516:4020:40
6:39
+0:02
Half
13.11 mi11:52:521:27:206:404:29
6:34
-0:05
25K
15.53 mi12:09:041:43:326:4016:12
6:41
+0:07
30K
18.64 mi12:30:482:05:166:4321:44
7:00
+0:19
20M
20.00 mi12:40:302:14:586:459:42
7:08
+0:08
21M
21.00 mi12:48:052:22:336:477:35
7:35
+0:27
35K
21.75 mi12:53:132:27:416:475:08
6:52
-0:43
23M
23.00 mi13:02:102:36:386:498:57
7:09
+0:17
24M
24.00 mi13:09:002:43:286:496:50
6:50
-0:19
40K
24.85 mi13:15:022:49:306:496:02
7:03
+0:13
25.2M
25.20 mi13:17:332:52:016:502:31
7:18
+0:15
Finish
26.22 mi13:24:312:58:596:506:58
6:50
-0:28

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

6:34 /mi

Average Pace

6:50 /mi

Slowest Pace

7:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:48:53

94% of race

Time at Steady Pace

10:06

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:50 /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 mi10:46:2620:546:4420:54
6:44
#3925
10K
6.21 mi11:07:0941:376:4220:43
6:40
#3964
15K
9.32 mi11:27:431:02:116:4020:34
6:37
#3739
20K
12.43 mi11:48:231:22:516:4020:40
6:39
#3578
Half
13.11 mi11:52:521:27:206:404:29
6:34
#3554
25K
15.53 mi12:09:041:43:326:4016:12
6:41
#3473
30K
18.64 mi12:30:482:05:166:4321:44
7:00
#3614
20M
20.00 mi12:40:302:14:586:459:42
7:08
#3689
21M
21.00 mi12:48:052:22:336:477:35
7:35
#3761
35K
21.75 mi12:53:132:27:416:475:08
6:52
#3791
23M
23.00 mi13:02:102:36:386:498:57
7:09
#3844
24M
24.00 mi13:09:002:43:286:496:50
6:50
#3828
40K
24.85 mi13:15:022:49:306:496:02
7:03
#3843
25.2M
25.20 mi13:17:332:52:016:502:31
7:18
#3811
Finish
26.22 mi13:24:312:58:596:506:58
6:50
#3860
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi39252382383469(Top 13%)178(Top 2%)178(Top 4%)
10K6.21 mi3.10 mi3964-39229+9229+94058(Top 15%)239(Top 2%)239(Top 5%)
15K9.32 mi3.11 mi3739+225206+23206+233469(Top 13%)178(Top 2%)178(Top 4%)
20K12.43 mi3.11 mi3578+161188+18188+183213(Top 12%)160(Top 1%)160(Top 3%)
Half13.11 mi0.68 mi3554+24186+2186+23304(Top 12%)156(Top 1%)156(Top 3%)
25K15.53 mi2.42 mi3473+81174+12174+123261(Top 12%)158(Top 1%)158(Top 3%)
30K18.64 mi3.11 mi3614-141193-19193-194324(Top 16%)300(Top 3%)300(Top 6%)
20M20.00 mi1.36 mi3689-75201-8201-84823(Top 18%)420(Top 4%)420(Top 9%)
21M21.00 mi1.00 mi3761-72213-12213-125018(Top 19%)521(Top 5%)521(Top 11%)
35K21.75 mi0.75 mi3791-30218-5218-54602(Top 17%)409(Top 4%)409(Top 8%)
23M23.00 mi1.25 mi3844-53224-6224-64570(Top 17%)427(Top 4%)427(Top 9%)
24M24.00 mi1.00 mi3828+16228-4228-43871(Top 15%)329(Top 3%)329(Top 7%)
40K24.85 mi0.85 mi3843-15231-3231-34172(Top 16%)440(Top 4%)440(Top 9%)
25.2M25.20 mi0.35 mi3811+32228+3228+33023(Top 11%)252(Top 2%)252(Top 5%)
Finish26.22 mi1.02 mi3860-49234-6234-64299(Top 16%)524(Top 5%)524(Top 11%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 13%
×21stories
+97ft-345ft

Overall

3469

Females

178

F18-39

178

5K→10K

3.1 - 6.2 mi

Top 15%
×5stories
+79ft-138ft

Overall

4058

Females

239

F18-39

239

10K→15K

6.2 - 9.3 mi

Top 13%
×3stories
+67ft-78ft

Overall

3469

Females

178

F18-39

178

15K→20K

9.3 - 12.4 mi

Top 12%
×5stories
+106ft-86ft

Overall

3213

Females

160

F18-39

160

20K→Half

12.4 - 13.1 mi

Top 12%
×2stories
+19ft-37ft

Overall

3304

Females

156

F18-39

156

Half→25K

13.1 - 15.5 mi

Top 12%
×4stories
+66ft-88ft

Overall

3261

Females

158

F18-39

158

25K→30K

15.5 - 18.6 mi

Top 16%
×9stories
+181ft-148ft

Overall

4324

Females

300

F18-39

300

30K→20M

18.6 - 20.0 mi

Top 18%
×5stories
+64ft-50ft

Overall

4823

Females

420

F18-39

420

20M→21M

20.0 - 21.0 mi

Top 19%
×8stories
+106ft-24ft

Overall

5018

Females

521

F18-39

521

21M→35K

21.0 - 21.8 mi

Top 17%
×7stories
+17ft-86ft

Overall

4602

Females

409

F18-39

409

35K→23M

21.8 - 23.0 mi

Top 17%
×5stories
+23ft-63ft

Overall

4570

Females

427

F18-39

427

23M→24M

23.0 - 24.0 mi

Top 15%
×6stories
+12ft-82ft

Overall

3871

Females

329

F18-39

329

24M→40K

24.0 - 24.9 mi

Top 16%
×1story
+6ft-20ft

Overall

4172

Females

440

F18-39

440

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

3023

Females

252

F18-39

252

25.2M→Finish

25.2 - 26.2 mi

Top 16%
×2stories
+22ft-21ft

Overall

4299

Females

524

F18-39

524

Passing Analysis

Category:
Athletes Passed
1183
Passed By
1118
Net Change
+65
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3925
5K → 10K210249-39#3925#3964
10K → 15K26035+225#3964#3739
15K → 20K18928+161#3739#3578
20K → Half317+24#3578#3554
Half → 25K11635+81#3554#3473
25K → 30K60201-141#3473#3614
30K → 20M38113-75#3614#3689
20M → 21M38110-72#3689#3761
21M → 35K1848-30#3761#3791
35K → 23M4598-53#3791#3844
23M → 24M5438+16#3844#3828
24M → 40K5166-15#3828#3843
40K → 25.2M408+32#3843#3811
25.2M → Finish3382-49#3811#3860
TOTALS11831118+65
📊

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