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BOSTON MARATHON 2023

Heather Anzallo

Bib: 9879•F

VA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 21%
Gender (Female)
#0 / 11423
Top 5%
Division (F18-39)
#0 / 4884
Top 9%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:38
Rank: #8029
Start → 5K
22:38 | 7:17/mi
10K· 6.21 mi
44:32
Rank: #7551 (+478)
5K → 10K
21:54 | 7:03/mi
15K· 9.32 mi
1:06:21
Rank: #7235 (+316)
10K → 15K
21:49 | 7:01/mi
20K· 12.43 mi
1:28:20
Rank: #6987 (+248)
15K → 20K
21:59 | 7:05/mi
Half· 13.11 mi
1:33:06
Rank: #6951 (+36)
20K → Half
4:46 | 6:59/mi
25K· 15.53 mi
1:50:10
Rank: #6725 (+226)
Half → 25K
17:04 | 7:02/mi
30K· 18.64 mi
2:12:23
Rank: #6423 (+302)
25K → 30K
22:13 | 7:09/mi
20M
2:22:08
Rank: #6271 (+152)
30K → 20M
9:45 | 7:10/mi
21M
2:29:45
Rank: #6178 (+93)
20M → 21M
7:37 | 7:37/mi
35K· 21.75 mi
2:35:05
Rank: #6154 (+24)
21M → 35K
5:20 | 7:08/mi
23M
2:44:18
Rank: #6065 (+89)
35K → 23M
9:13 | 7:22/mi
24M
2:51:27
Rank: #5995 (+70)
23M → 24M
7:09 | 7:09/mi
40K· 24.85 mi
2:57:37
Rank: #5908 (+87)
24M → 40K
6:10 | 7:13/mi
25.2M
3:00:14
Rank: #5864 (+44)
40K → 25.2M
2:37 | 7:35/mi
Finish· 26.22 mi
3:07:06
Rank: #5725 (+139)
25.2M → Finish
6:52 | 6:44/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:33:06
Pace7:06 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:34:00
Pace7:10 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:3222:387:1722:38
7:17
-
10K
6.21 mi11:10:2644:327:1021:54
7:03
-0:14
15K
9.32 mi11:32:151:06:217:0721:49
7:01
-0:02
20K
12.43 mi11:54:141:28:207:0621:59
7:05
+0:04
Half
13.11 mi11:59:001:33:067:064:46
6:59
-0:06
25K
15.53 mi12:16:041:50:107:0617:04
7:02
+0:03
30K
18.64 mi12:38:172:12:237:0622:13
7:09
+0:07
20M
20.00 mi12:48:022:22:087:069:45
7:10
+0:01
21M
21.00 mi12:55:392:29:457:087:37
7:37
+0:27
35K
21.75 mi13:00:592:35:057:085:20
7:08
-0:29
23M
23.00 mi13:10:122:44:187:099:13
7:22
+0:14
24M
24.00 mi13:17:212:51:277:097:09
7:09
-0:13
40K
24.85 mi13:23:312:57:377:096:10
7:13
+0:04
25.2M
25.20 mi13:26:083:00:147:092:37
7:35
+0:22
Finish
26.22 mi13:33:003:07:067:086:52
6:44
-0:51

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

6:44 /mi

Average Pace

7:08 /mi

Slowest Pace

7:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:56:52

95% of race

Time at Steady Pace

10:14

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:08 /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 mi10:48:3222:387:1722:38
7:17
#8029
10K
6.21 mi11:10:2644:327:1021:54
7:03
#7551
15K
9.32 mi11:32:151:06:217:0721:49
7:01
#7235
20K
12.43 mi11:54:141:28:207:0621:59
7:05
#6987
Half
13.11 mi11:59:001:33:067:064:46
6:59
#6951
25K
15.53 mi12:16:041:50:107:0617:04
7:02
#6725
30K
18.64 mi12:38:172:12:237:0622:13
7:09
#6423
20M
20.00 mi12:48:022:22:087:069:45
7:10
#6271
21M
21.00 mi12:55:392:29:457:087:37
7:37
#6178
35K
21.75 mi13:00:592:35:057:085:20
7:08
#6154
23M
23.00 mi13:10:122:44:187:099:13
7:22
#6065
24M
24.00 mi13:17:212:51:277:097:09
7:09
#5995
40K
24.85 mi13:23:312:57:377:096:10
7:13
#5908
25.2M
25.20 mi13:26:083:00:147:092:37
7:35
#5864
Finish
26.22 mi13:33:003:07:067:086:52
6:44
#5725
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8029101810186714(Top 25%)680(Top 6%)680(Top 14%)
10K6.21 mi3.10 mi7551+478868+150868+1507128(Top 27%)784(Top 7%)784(Top 16%)
15K9.32 mi3.11 mi7235+316802+66802+666714(Top 25%)680(Top 6%)680(Top 14%)
20K12.43 mi3.11 mi6987+248735+67735+676432(Top 24%)632(Top 6%)632(Top 13%)
Half13.11 mi0.68 mi6951+36731+4731+46500(Top 24%)623(Top 5%)623(Top 13%)
25K15.53 mi2.42 mi6725+226687+44687+445808(Top 22%)502(Top 4%)502(Top 10%)
30K18.64 mi3.11 mi6423+302628+59628+595234(Top 20%)449(Top 4%)449(Top 9%)
20M20.00 mi1.36 mi6271+152607+21607+215015(Top 19%)461(Top 4%)461(Top 9%)
21M21.00 mi1.00 mi6178+93599+8599+85213(Top 20%)584(Top 5%)584(Top 12%)
35K21.75 mi0.75 mi6154+24597+2597+26120(Top 23%)791(Top 7%)791(Top 16%)
23M23.00 mi1.25 mi6065+89588+9588+95660(Top 21%)698(Top 6%)698(Top 14%)
24M24.00 mi1.00 mi5995+70585+3585+35489(Top 21%)714(Top 6%)714(Top 15%)
40K24.85 mi0.85 mi5908+87575+10575+104983(Top 19%)641(Top 6%)641(Top 13%)
25.2M25.20 mi0.35 mi5864+44568+7568+74390(Top 16%)545(Top 5%)545(Top 11%)
Finish26.22 mi1.02 mi5725+139551+17551+173762(Top 14%)413(Top 4%)413(Top 8%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 25%
×21stories
+97ft-345ft

Overall

6714

Females

680

F18-39

680

5K→10K

3.1 - 6.2 mi

Top 27%
×5stories
+79ft-138ft

Overall

7128

Females

784

F18-39

784

10K→15K

6.2 - 9.3 mi

Top 25%
×3stories
+67ft-78ft

Overall

6714

Females

680

F18-39

680

15K→20K

9.3 - 12.4 mi

Top 24%
×5stories
+106ft-86ft

Overall

6432

Females

632

F18-39

632

20K→Half

12.4 - 13.1 mi

Top 24%
×2stories
+19ft-37ft

Overall

6500

Females

623

F18-39

623

Half→25K

13.1 - 15.5 mi

Top 22%
×4stories
+66ft-88ft

Overall

5808

Females

502

F18-39

502

25K→30K

15.5 - 18.6 mi

Top 20%
×9stories
+181ft-148ft

Overall

5234

Females

449

F18-39

449

30K→20M

18.6 - 20.0 mi

Top 19%
×5stories
+64ft-50ft

Overall

5015

Females

461

F18-39

461

20M→21M

20.0 - 21.0 mi

Top 20%
×8stories
+106ft-24ft

Overall

5213

Females

584

F18-39

584

21M→35K

21.0 - 21.8 mi

Top 23%
×7stories
+17ft-86ft

Overall

6120

Females

791

F18-39

791

35K→23M

21.8 - 23.0 mi

Top 21%
×5stories
+23ft-63ft

Overall

5660

Females

698

F18-39

698

23M→24M

23.0 - 24.0 mi

Top 21%
×6stories
+12ft-82ft

Overall

5489

Females

714

F18-39

714

24M→40K

24.0 - 24.9 mi

Top 19%
×1story
+6ft-20ft

Overall

4983

Females

641

F18-39

641

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4390

Females

545

F18-39

545

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2stories
+22ft-21ft

Overall

3762

Females

413

F18-39

413

Passing Analysis

Category:
Athletes Passed
2537
Passed By
233
Net Change
+2304
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8029
5K → 10K55173+478#8029#7551
10K → 15K34428+316#7551#7235
15K → 20K25911+248#7235#6987
20K → Half404+36#6987#6951
Half → 25K2293+226#6951#6725
25K → 30K31210+302#6725#6423
30K → 20M1575+152#6423#6271
20M → 21M10916+93#6271#6178
21M → 35K4218+24#6178#6154
35K → 23M11223+89#6154#6065
23M → 24M8717+70#6065#5995
24M → 40K10013+87#5995#5908
40K → 25.2M473+44#5908#5864
25.2M → Finish1489+139#5864#5725
TOTALS2537233+2304
📊

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