Boston Marathon logo
BOSTON MARATHON 2023

Alannah Maclean

Bib: 4212•F

ON

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 14%
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
20:49
Rank: #3691
Start → 5K
20:49 | 6:42/mi
10K· 6.21 mi
41:39
Rank: #4024 (-333)
5K → 10K
20:50 | 6:42/mi
15K· 9.32 mi
1:02:29
Rank: #4060 (-36)
10K → 15K
20:50 | 6:42/mi
20K· 12.43 mi
1:23:19
Rank: #3916 (+144)
15K → 20K
20:50 | 6:42/mi
Half· 13.11 mi
1:27:53
Rank: #3926 (-10)
20K → Half
4:34 | 6:42/mi
25K· 15.53 mi
1:44:15
Rank: #3876 (+50)
Half → 25K
16:22 | 6:45/mi
30K· 18.64 mi
2:05:45
Rank: #3814 (+62)
25K → 30K
21:30 | 6:55/mi
20M
2:15:14
Rank: #3790 (+24)
30K → 20M
9:29 | 6:59/mi
21M
2:22:29
Rank: #3738 (+52)
20M → 21M
7:15 | 7:15/mi
35K· 21.75 mi
2:27:37
Rank: #3768 (-30)
21M → 35K
5:08 | 6:52/mi
23M
2:36:20
Rank: #3723 (+45)
35K → 23M
8:43 | 6:58/mi
24M
2:43:09
Rank: #3710 (+13)
23M → 24M
6:49 | 6:49/mi
40K· 24.85 mi
2:49:04
Rank: #3679 (+31)
24M → 40K
5:55 | 6:55/mi
25.2M
2:51:37
Rank: #3656 (+23)
40K → 25.2M
2:33 | 7:24/mi
Finish· 26.22 mi
2:58:32
Rank: #3679 (-23)
25.2M → Finish
6:55 | 6:47/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:53
Pace6:42 /mi
2nd Half
Distance13.11 mi
Time1:30:39
Pace6:55 /mi
📊Positive Split: 3.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:4320:496:4220:49
6:42
-
10K
6.21 mi10:43:3341:396:4220:50
6:42
0:00
15K
9.32 mi11:04:231:02:296:4220:50
6:42
0:00
20K
12.43 mi11:25:131:23:196:4220:50
6:42
0:00
Half
13.11 mi11:29:471:27:536:424:34
6:42
0:00
25K
15.53 mi11:46:091:44:156:4316:22
6:45
+0:03
30K
18.64 mi12:07:392:05:456:4521:30
6:55
+0:10
20M
20.00 mi12:17:082:15:146:469:29
6:59
+0:04
21M
21.00 mi12:24:232:22:296:477:15
7:15
+0:16
35K
21.75 mi12:29:312:27:376:475:08
6:52
-0:23
23M
23.00 mi12:38:142:36:206:488:43
6:58
+0:06
24M
24.00 mi12:45:032:43:096:486:49
6:49
-0:09
40K
24.85 mi12:50:582:49:046:485:55
6:55
+0:06
25.2M
25.20 mi12:53:312:51:376:492:33
7:24
+0:29
Finish
26.22 mi13:00:262:58:326:496:55
6:47
-0:37

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

6:42 /mi

Average Pace

6:49 /mi

Slowest Pace

7:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:55:59

99% of race

Time at Steady Pace

2:33

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:49 /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 mi10:22:4320:496:4220:49
6:42
#3691
10K
6.21 mi10:43:3341:396:4220:50
6:42
#4024
15K
9.32 mi11:04:231:02:296:4220:50
6:42
#4060
20K
12.43 mi11:25:131:23:196:4220:50
6:42
#3916
Half
13.11 mi11:29:471:27:536:424:34
6:42
#3926
25K
15.53 mi11:46:091:44:156:4316:22
6:45
#3876
30K
18.64 mi12:07:392:05:456:4521:30
6:55
#3814
20M
20.00 mi12:17:082:15:146:469:29
6:59
#3790
21M
21.00 mi12:24:232:22:296:477:15
7:15
#3738
35K
21.75 mi12:29:312:27:376:475:08
6:52
#3768
23M
23.00 mi12:38:142:36:206:488:43
6:58
#3723
24M
24.00 mi12:45:032:43:096:486:49
6:49
#3710
40K
24.85 mi12:50:582:49:046:485:55
6:55
#3679
25.2M
25.20 mi12:53:312:51:376:492:33
7:24
#3656
Finish
26.22 mi13:00:262:58:326:496:55
6:47
#3679
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi36912152154213(Top 16%)256(Top 2%)256(Top 5%)
10K6.21 mi3.10 mi4024-333238-23238-234408(Top 17%)277(Top 2%)277(Top 6%)
15K9.32 mi3.11 mi4060-362382384213(Top 16%)256(Top 2%)256(Top 5%)
20K12.43 mi3.11 mi3916+144226+12226+123642(Top 14%)193(Top 2%)193(Top 4%)
Half13.11 mi0.68 mi3926-102262264370(Top 16%)279(Top 2%)279(Top 6%)
25K15.53 mi2.42 mi3876+50217+9217+93770(Top 14%)220(Top 2%)220(Top 5%)
30K18.64 mi3.11 mi3814+62214+3214+33805(Top 14%)234(Top 2%)234(Top 5%)
20M20.00 mi1.36 mi3790+24211+3211+33931(Top 15%)273(Top 2%)273(Top 6%)
21M21.00 mi1.00 mi3738+52210+1210+13390(Top 13%)232(Top 2%)232(Top 5%)
35K21.75 mi0.75 mi3768-30214-4214-44601(Top 17%)408(Top 4%)408(Top 8%)
23M23.00 mi1.25 mi3723+45213+1213+13606(Top 14%)262(Top 2%)262(Top 5%)
24M24.00 mi1.00 mi3710+13214-1214-13770(Top 14%)314(Top 3%)314(Top 6%)
40K24.85 mi0.85 mi3679+31216-2216-23464(Top 13%)299(Top 3%)299(Top 6%)
25.2M25.20 mi0.35 mi3656+23213+3213+33462(Top 13%)325(Top 3%)325(Top 7%)
Finish26.22 mi1.02 mi3679-23218-5218-54025(Top 15%)461(Top 4%)461(Top 9%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4213

Females

256

F18-39

256

5K→10K

3.1 - 6.2 mi

Top 17%
×5stories
+79ft-138ft

Overall

4408

Females

277

F18-39

277

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4213

Females

256

F18-39

256

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

3642

Females

193

F18-39

193

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4370

Females

279

F18-39

279

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3770

Females

220

F18-39

220

25K→30K

15.5 - 18.6 mi

Top 14%
×9stories
+181ft-148ft

Overall

3805

Females

234

F18-39

234

30K→20M

18.6 - 20.0 mi

Top 15%
×5stories
+64ft-50ft

Overall

3931

Females

273

F18-39

273

20M→21M

20.0 - 21.0 mi

Top 13%
×8stories
+106ft-24ft

Overall

3390

Females

232

F18-39

232

21M→35K

21.0 - 21.8 mi

Top 17%
×7stories
+17ft-86ft

Overall

4601

Females

408

F18-39

408

35K→23M

21.8 - 23.0 mi

Top 14%
×5stories
+23ft-63ft

Overall

3606

Females

262

F18-39

262

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

3770

Females

314

F18-39

314

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3464

Females

299

F18-39

299

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3462

Females

325

F18-39

325

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2stories
+22ft-21ft

Overall

4025

Females

461

F18-39

461

Passing Analysis

Category:
Athletes Passed
1097
Passed By
1085
Net Change
+12
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3691
5K → 10K100433-333#3691#4024
10K → 15K101137-36#4024#4060
15K → 20K19349+144#4060#3916
20K → Half1525-10#3916#3926
Half → 25K10050+50#3926#3876
25K → 30K14078+62#3876#3814
30K → 20M7248+24#3814#3790
20M → 21M8230+52#3790#3738
21M → 35K1848-30#3738#3768
35K → 23M8540+45#3768#3723
23M → 24M5340+13#3723#3710
24M → 40K6029+31#3710#3679
40K → 25.2M329+23#3679#3656
25.2M → Finish4669-23#3656#3679
TOTALS10971085+12
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing