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BOSTON MARATHON 2023

Alexandra Roberts

Bib: 10132•F

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 24%
Gender (Female)
#0 / 11423
Top 6%
Division (F18-39)
#0 / 4884
Top 12%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:44
Rank: #8220
Start → 5K
22:44 | 7:19/mi
10K· 6.21 mi
44:48
Rank: #7834 (+386)
5K → 10K
22:04 | 7:06/mi
15K· 9.32 mi
1:06:54
Rank: #7600 (+234)
10K → 15K
22:06 | 7:07/mi
20K· 12.43 mi
1:29:16
Rank: #7428 (+172)
15K → 20K
22:22 | 7:12/mi
Half· 13.11 mi
1:34:09
Rank: #7426 (+2)
20K → Half
4:53 | 7:09/mi
25K· 15.53 mi
1:51:40
Rank: #7299 (+127)
Half → 25K
17:31 | 7:13/mi
30K· 18.64 mi
2:14:37
Rank: #7105 (+194)
25K → 30K
22:57 | 7:23/mi
20M
2:24:51
Rank: #7066 (+39)
30K → 20M
10:14 | 7:32/mi
21M
2:32:23
Rank: #6907 (+159)
20M → 21M
7:32 | 7:32/mi
35K· 21.75 mi
2:37:47
Rank: #6876 (+31)
21M → 35K
5:24 | 7:13/mi
23M
2:46:57
Rank: #6743 (+133)
35K → 23M
9:10 | 7:19/mi
24M
2:54:06
Rank: #6654 (+89)
23M → 24M
7:09 | 7:09/mi
40K· 24.85 mi
3:00:15
Rank: #6534 (+120)
24M → 40K
6:09 | 7:12/mi
25.2M
3:02:53
Rank: #6487 (+47)
40K → 25.2M
2:38 | 7:38/mi
Finish· 26.22 mi
3:10:02
Rank: #6433 (+54)
25.2M → Finish
7:09 | 7:01/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:09
Pace7:11 /mi
2nd Half
Distance13.11 mi
Time1:35:53
Pace7:19 /mi
📊Positive Split: 1.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:1222:447:1922:44
7:19
-
10K
6.21 mi11:11:1644:487:1322:04
7:06
-0:13
15K
9.32 mi11:33:221:06:547:1122:06
7:07
+0:01
20K
12.43 mi11:55:441:29:167:1122:22
7:12
+0:05
Half
13.11 mi12:00:371:34:097:114:53
7:09
-0:03
25K
15.53 mi12:18:081:51:407:1117:31
7:13
+0:04
30K
18.64 mi12:41:052:14:377:1322:57
7:23
+0:10
20M
20.00 mi12:51:192:24:517:1510:14
7:32
+0:09
21M
21.00 mi12:58:512:32:237:157:32
7:32
0:00
35K
21.75 mi13:04:152:37:477:155:24
7:13
-0:19
23M
23.00 mi13:13:252:46:577:169:10
7:19
+0:06
24M
24.00 mi13:20:342:54:067:157:09
7:09
-0:10
40K
24.85 mi13:26:433:00:157:156:09
7:12
+0:03
25.2M
25.20 mi13:29:213:02:537:152:38
7:38
+0:26
Finish
26.22 mi13:36:303:10:027:157:09
7:01
-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

7:01 /mi

Average Pace

7:15 /mi

Slowest Pace

7:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:26:41

77% of race

Time at Steady Pace

43:21

23% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:15 /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 mi10:49:1222:447:1922:44
7:19
#8220
10K
6.21 mi11:11:1644:487:1322:04
7:06
#7834
15K
9.32 mi11:33:221:06:547:1122:06
7:07
#7600
20K
12.43 mi11:55:441:29:167:1122:22
7:12
#7428
Half
13.11 mi12:00:371:34:097:114:53
7:09
#7426
25K
15.53 mi12:18:081:51:407:1117:31
7:13
#7299
30K
18.64 mi12:41:052:14:377:1322:57
7:23
#7105
20M
20.00 mi12:51:192:24:517:1510:14
7:32
#7066
21M
21.00 mi12:58:512:32:237:157:32
7:32
#6907
35K
21.75 mi13:04:152:37:477:155:24
7:13
#6876
23M
23.00 mi13:13:252:46:577:169:10
7:19
#6743
24M
24.00 mi13:20:342:54:067:157:09
7:09
#6654
40K
24.85 mi13:26:433:00:157:156:09
7:12
#6534
25.2M
25.20 mi13:29:213:02:537:152:38
7:38
#6487
Finish
26.22 mi13:36:303:10:027:157:09
7:01
#6433
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 mi8220109110917233(Top 27%)816(Top 7%)816(Top 17%)
10K6.21 mi3.10 mi7834+386959+132959+1327472(Top 28%)881(Top 8%)881(Top 18%)
15K9.32 mi3.11 mi7600+234900+59900+597233(Top 27%)816(Top 7%)816(Top 17%)
20K12.43 mi3.11 mi7428+172861+39861+397102(Top 27%)806(Top 7%)806(Top 17%)
Half13.11 mi0.68 mi7426+28618617597(Top 29%)940(Top 8%)940(Top 19%)
25K15.53 mi2.42 mi7299+127835+26835+266829(Top 26%)790(Top 7%)790(Top 16%)
30K18.64 mi3.11 mi7105+194805+30805+306545(Top 25%)775(Top 7%)775(Top 16%)
20M20.00 mi1.36 mi7066+39803+2803+27034(Top 26%)1041(Top 9%)1041(Top 21%)
21M21.00 mi1.00 mi6907+159771+32771+324708(Top 18%)456(Top 4%)456(Top 9%)
35K21.75 mi0.75 mi6876+31778-7778-76664(Top 25%)966(Top 8%)966(Top 20%)
23M23.00 mi1.25 mi6743+133764+14764+145451(Top 20%)650(Top 6%)650(Top 13%)
24M24.00 mi1.00 mi6654+89753+11753+115493(Top 21%)718(Top 6%)718(Top 15%)
40K24.85 mi0.85 mi6534+120736+17736+174882(Top 18%)612(Top 5%)612(Top 13%)
25.2M25.20 mi0.35 mi6487+47730+6730+64636(Top 17%)608(Top 5%)608(Top 12%)
Finish26.22 mi1.02 mi6433+54724+6724+65334(Top 20%)833(Top 7%)833(Top 17%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 27%
×21stories
+97ft-345ft

Overall

7233

Females

816

F18-39

816

5K→10K

3.1 - 6.2 mi

Top 28%
×5stories
+79ft-138ft

Overall

7472

Females

881

F18-39

881

10K→15K

6.2 - 9.3 mi

Top 27%
×3stories
+67ft-78ft

Overall

7233

Females

816

F18-39

816

15K→20K

9.3 - 12.4 mi

Top 27%
×5stories
+106ft-86ft

Overall

7102

Females

806

F18-39

806

20K→Half

12.4 - 13.1 mi

Top 29%
×2stories
+19ft-37ft

Overall

7597

Females

940

F18-39

940

Half→25K

13.1 - 15.5 mi

Top 26%
×4stories
+66ft-88ft

Overall

6829

Females

790

F18-39

790

25K→30K

15.5 - 18.6 mi

Top 25%
×9stories
+181ft-148ft

Overall

6545

Females

775

F18-39

775

30K→20M

18.6 - 20.0 mi

Top 26%
×5stories
+64ft-50ft

Overall

7034

Females

1041

F18-39

1041

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

4708

Females

456

F18-39

456

21M→35K

21.0 - 21.8 mi

Top 25%
×7stories
+17ft-86ft

Overall

6664

Females

966

F18-39

966

35K→23M

21.8 - 23.0 mi

Top 20%
×5stories
+23ft-63ft

Overall

5451

Females

650

F18-39

650

23M→24M

23.0 - 24.0 mi

Top 21%
×6stories
+12ft-82ft

Overall

5493

Females

718

F18-39

718

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

4882

Females

612

F18-39

612

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4636

Females

608

F18-39

608

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2stories
+22ft-21ft

Overall

5334

Females

833

F18-39

833

Passing Analysis

Category:
Athletes Passed
2160
Passed By
373
Net Change
+1787
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8220
5K → 10K48296+386#8220#7834
10K → 15K27844+234#7834#7600
15K → 20K21240+172#7600#7428
20K → Half2321+2#7428#7426
Half → 25K14922+127#7426#7299
25K → 30K23137+194#7299#7105
30K → 20M7738+39#7105#7066
20M → 21M1634+159#7066#6907
21M → 35K5423+31#6907#6876
35K → 23M14310+133#6876#6743
23M → 24M978+89#6743#6654
24M → 40K1266+120#6654#6534
40K → 25.2M514+47#6534#6487
25.2M → Finish7420+54#6487#6433
TOTALS2160373+1787
📊

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