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BOSTON MARATHON 2023

Alexandra Macdonald

Bib: 12263•F

BC

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 20%
Gender (Female)
#0 / 11423
Top 4%
Division (F18-39)
#0 / 4884
Top 8%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:54
Rank: #8601
Start → 5K
22:54 | 7:22/mi
10K· 6.21 mi
45:07
Rank: #8194 (+407)
5K → 10K
22:13 | 7:09/mi
15K· 9.32 mi
1:07:11
Rank: #7804 (+390)
10K → 15K
22:04 | 7:06/mi
20K· 12.43 mi
1:29:05
Rank: #7335 (+469)
15K → 20K
21:54 | 7:03/mi
Half· 13.11 mi
1:33:42
Rank: #7221 (+114)
20K → Half
4:37 | 6:46/mi
25K· 15.53 mi
1:50:43
Rank: #6934 (+287)
Half → 25K
17:01 | 7:01/mi
30K· 18.64 mi
2:12:59
Rank: #6591 (+343)
25K → 30K
22:16 | 7:10/mi
20M
2:22:41
Rank: #6430 (+161)
30K → 20M
9:42 | 7:08/mi
21M
2:30:17
Rank: #6326 (+104)
20M → 21M
7:36 | 7:36/mi
35K· 21.75 mi
2:35:16
Rank: #6204 (+122)
21M → 35K
4:59 | 6:40/mi
23M
2:43:56
Rank: #5973 (+231)
35K → 23M
8:40 | 6:55/mi
24M
2:50:51
Rank: #5835 (+138)
23M → 24M
6:55 | 6:55/mi
40K· 24.85 mi
2:56:46
Rank: #5714 (+121)
24M → 40K
5:55 | 6:55/mi
25.2M
2:59:05
Rank: #5593 (+121)
40K → 25.2M
2:19 | 6:43/mi
Finish· 26.22 mi
3:05:53
Rank: #5443 (+150)
25.2M → Finish
6:48 | 6:40/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:33:42
Pace7:09 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:32:11
Pace7:02 /mi
📊Negative Split: 1.6% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:2622:547:2222:54
7:22
-
10K
6.21 mi11:12:3945:077:1622:13
7:09
-0:13
15K
9.32 mi11:34:431:07:117:1222:04
7:06
-0:03
20K
12.43 mi11:56:371:29:057:1021:54
7:03
-0:03
Half
13.11 mi12:01:141:33:427:094:37
6:46
-0:17
25K
15.53 mi12:18:151:50:437:0817:01
7:01
+0:15
30K
18.64 mi12:40:312:12:597:0822:16
7:10
+0:09
20M
20.00 mi12:50:132:22:417:089:42
7:08
-0:02
21M
21.00 mi12:57:492:30:177:097:36
7:36
+0:28
35K
21.75 mi13:02:482:35:167:084:59
6:40
-0:56
23M
23.00 mi13:11:282:43:567:088:40
6:55
+0:15
24M
24.00 mi13:18:232:50:517:076:55
6:55
0:00
40K
24.85 mi13:24:182:56:467:075:55
6:55
0:00
25.2M
25.20 mi13:26:372:59:057:062:19
6:43
-0:12
Finish
26.22 mi13:33:253:05:537:066:48
6:40
-0:03

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

6:40 /mi

Average Pace

7:06 /mi

Slowest Pace

7:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:35:23

84% of race

Time at Steady Pace

30:30

16% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:05 /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 mi10:50:2622:547:2222:54
7:22
#8601
10K
6.21 mi11:12:3945:077:1622:13
7:09
#8194
15K
9.32 mi11:34:431:07:117:1222:04
7:06
#7804
20K
12.43 mi11:56:371:29:057:1021:54
7:03
#7335
Half
13.11 mi12:01:141:33:427:094:37
6:46
#7221
25K
15.53 mi12:18:151:50:437:0817:01
7:01
#6934
30K
18.64 mi12:40:312:12:597:0822:16
7:10
#6591
20M
20.00 mi12:50:132:22:417:089:42
7:08
#6430
21M
21.00 mi12:57:492:30:177:097:36
7:36
#6326
35K
21.75 mi13:02:482:35:167:084:59
6:40
#6204
23M
23.00 mi13:11:282:43:567:088:40
6:55
#5973
24M
24.00 mi13:18:232:50:517:076:55
6:55
#5835
40K
24.85 mi13:24:182:56:467:075:55
6:55
#5714
25.2M
25.20 mi13:26:372:59:057:062:19
6:43
#5593
Finish
26.22 mi13:33:253:05:537:066:48
6:40
#5443
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8601123112317169(Top 27%)794(Top 7%)794(Top 16%)
10K6.21 mi3.10 mi8194+4071101+1301101+1307780(Top 29%)973(Top 9%)973(Top 20%)
15K9.32 mi3.11 mi7804+390965+136965+1367169(Top 27%)794(Top 7%)794(Top 16%)
20K12.43 mi3.11 mi7335+469832+133832+1336289(Top 24%)592(Top 5%)592(Top 12%)
Half13.11 mi0.68 mi7221+114804+28804+285081(Top 19%)381(Top 3%)381(Top 8%)
25K15.53 mi2.42 mi6934+287735+69735+695693(Top 21%)473(Top 4%)473(Top 10%)
30K18.64 mi3.11 mi6591+343672+63672+635324(Top 20%)462(Top 4%)462(Top 9%)
20M20.00 mi1.36 mi6430+161643+29643+294830(Top 18%)427(Top 4%)427(Top 9%)
21M21.00 mi1.00 mi6326+104629+14629+145118(Top 19%)554(Top 5%)554(Top 11%)
35K21.75 mi0.75 mi6204+122604+25604+253400(Top 13%)243(Top 2%)243(Top 5%)
23M23.00 mi1.25 mi5973+231568+36568+363402(Top 13%)250(Top 2%)250(Top 5%)
24M24.00 mi1.00 mi5835+138545+23545+234285(Top 16%)392(Top 3%)392(Top 8%)
40K24.85 mi0.85 mi5714+121530+15530+153477(Top 13%)312(Top 3%)312(Top 6%)
25.2M25.20 mi0.35 mi5593+121504+26504+26989(Top 4%)52(Top 0.5%)52(Top 1%)
Finish26.22 mi1.02 mi5443+150480+24480+243400(Top 13%)349(Top 3%)349(Top 7%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 27%
×21stories
+97ft-345ft

Overall

7169

Females

794

F18-39

794

5K→10K

3.1 - 6.2 mi

Top 29%
×5stories
+79ft-138ft

Overall

7780

Females

973

F18-39

973

10K→15K

6.2 - 9.3 mi

Top 27%
×3stories
+67ft-78ft

Overall

7169

Females

794

F18-39

794

15K→20K

9.3 - 12.4 mi

Top 24%
×5stories
+106ft-86ft

Overall

6289

Females

592

F18-39

592

20K→Half

12.4 - 13.1 mi

Top 19%
×2stories
+19ft-37ft

Overall

5081

Females

381

F18-39

381

Half→25K

13.1 - 15.5 mi

Top 21%
×4stories
+66ft-88ft

Overall

5693

Females

473

F18-39

473

25K→30K

15.5 - 18.6 mi

Top 20%
×9stories
+181ft-148ft

Overall

5324

Females

462

F18-39

462

30K→20M

18.6 - 20.0 mi

Top 18%
×5stories
+64ft-50ft

Overall

4830

Females

427

F18-39

427

20M→21M

20.0 - 21.0 mi

Top 19%
×8stories
+106ft-24ft

Overall

5118

Females

554

F18-39

554

21M→35K

21.0 - 21.8 mi

Top 13%
×7stories
+17ft-86ft

Overall

3400

Females

243

F18-39

243

35K→23M

21.8 - 23.0 mi

Top 13%
×5stories
+23ft-63ft

Overall

3402

Females

250

F18-39

250

23M→24M

23.0 - 24.0 mi

Top 16%
×6stories
+12ft-82ft

Overall

4285

Females

392

F18-39

392

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3477

Females

312

F18-39

312

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

989

Females

52

F18-39

52

25.2M→Finish

25.2 - 26.2 mi

Top 13%
×2stories
+22ft-21ft

Overall

3400

Females

349

F18-39

349

Passing Analysis

Category:
Athletes Passed
3308
Passed By
150
Net Change
+3158
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8601
5K → 10K50194+407#8601#8194
10K → 15K40616+390#8194#7804
15K → 20K4723+469#7804#7335
20K → Half1140+114#7335#7221
Half → 25K2892+287#7221#6934
25K → 30K3507+343#6934#6591
30K → 20M1676+161#6591#6430
20M → 21M11713+104#6430#6326
21M → 35K1220+122#6326#6204
35K → 23M2321+231#6204#5973
23M → 24M1413+138#5973#5835
24M → 40K1221+121#5835#5714
40K → 25.2M1210+121#5714#5593
25.2M → Finish1544+150#5593#5443
TOTALS3308150+3158
📊

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