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BOSTON MARATHON 2023

Anna Dennis

Bib: 20012•F

AZ

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 40%
Division (F40-44)
#0 / 1878
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:06
Rank: #19033
Start → 5K
27:06 | 8:43/mi
10K· 6.21 mi
54:08
Rank: #19175 (-142)
5K → 10K
27:02 | 8:42/mi
15K· 9.32 mi
1:20:28
Rank: #18654 (+521)
10K → 15K
26:20 | 8:29/mi
20K· 12.43 mi
1:47:00
Rank: #18265 (+389)
15K → 20K
26:32 | 8:32/mi
Half· 13.11 mi
1:52:33
Rank: #18119 (+146)
20K → Half
5:33 | 8:08/mi
25K· 15.53 mi
2:13:09
Rank: #17761 (+358)
Half → 25K
20:36 | 8:30/mi
30K· 18.64 mi
2:40:25
Rank: #17394 (+367)
25K → 30K
27:16 | 8:47/mi
20M
2:52:40
Rank: #17323 (+71)
30K → 20M
12:15 | 9:01/mi
21M
3:01:58
Rank: #17183 (+140)
20M → 21M
9:18 | 9:18/mi
35K· 21.75 mi
3:08:36
Rank: #17179 (+4)
21M → 35K
6:38 | 8:52/mi
23M
3:19:28
Rank: #17000 (+179)
35K → 23M
10:52 | 8:41/mi
24M
3:27:40
Rank: #16838 (+162)
23M → 24M
8:12 | 8:12/mi
40K· 24.85 mi
3:34:47
Rank: #16656 (+182)
24M → 40K
7:07 | 8:19/mi
25.2M
3:37:59
Rank: #16603 (+53)
40K → 25.2M
3:12 | 9:17/mi
Finish· 26.22 mi
3:46:14
Rank: #16447 (+156)
25.2M → Finish
8:15 | 8:06/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:33
Pace8:35 /mi
2nd Half
Distance13.11 mi
Time1:53:41
Pace8:40 /mi
📊Positive Split: 1.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:1127:068:4327:06
8:43
-
10K
6.21 mi11:47:1354:088:4327:02
8:42
-0:01
15K
9.32 mi12:13:331:20:288:3826:20
8:29
-0:13
20K
12.43 mi12:40:051:47:008:3726:32
8:32
+0:03
Half
13.11 mi12:45:381:52:338:355:33
8:08
-0:24
25K
15.53 mi13:06:142:13:098:3420:36
8:30
+0:22
30K
18.64 mi13:33:302:40:258:3627:16
8:47
+0:17
20M
20.00 mi13:45:452:52:408:3812:15
9:01
+0:14
21M
21.00 mi13:55:033:01:588:409:18
9:18
+0:17
35K
21.75 mi14:01:413:08:368:406:38
8:52
-0:26
23M
23.00 mi14:12:333:19:288:4010:52
8:41
-0:11
24M
24.00 mi14:20:453:27:408:398:12
8:12
-0:29
40K
24.85 mi14:27:523:34:478:387:07
8:19
+0:07
25.2M
25.20 mi14:31:043:37:598:393:12
9:17
+0:58
Finish
26.22 mi14:39:193:46:148:388:15
8:06
-1:11

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

8:06 /mi

Average Pace

8:38 /mi

Slowest Pace

9:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:21:29

89% of race

Time at Steady Pace

24:45

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:38 /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 mi11:20:1127:068:4327:06
8:43
#19033
10K
6.21 mi11:47:1354:088:4327:02
8:42
#19175
15K
9.32 mi12:13:331:20:288:3826:20
8:29
#18654
20K
12.43 mi12:40:051:47:008:3726:32
8:32
#18265
Half
13.11 mi12:45:381:52:338:355:33
8:08
#18119
25K
15.53 mi13:06:142:13:098:3420:36
8:30
#17761
30K
18.64 mi13:33:302:40:258:3627:16
8:47
#17394
20M
20.00 mi13:45:452:52:408:3812:15
9:01
#17323
21M
21.00 mi13:55:033:01:588:409:18
9:18
#17183
35K
21.75 mi14:01:413:08:368:406:38
8:52
#17179
23M
23.00 mi14:12:333:19:288:4010:52
8:41
#17000
24M
24.00 mi14:20:453:27:408:398:12
8:12
#16838
40K
24.85 mi14:27:523:34:478:387:07
8:19
#16656
25.2M
25.20 mi14:31:043:37:598:393:12
9:17
#16603
Finish
26.22 mi14:39:193:46:148:388:15
8:06
#16447
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi190337219721917640(Top 66%)6295(Top 55%)6295(Top 335%)
10K6.21 mi3.10 mi19175-1427262-437262-4319441(Top 73%)7343(Top 64%)7343(Top 391%)
15K9.32 mi3.11 mi18654+5216914+3486914+34817640(Top 66%)6295(Top 55%)6295(Top 335%)
20K12.43 mi3.11 mi18265+3896667+2476667+24717123(Top 64%)6002(Top 53%)6002(Top 320%)
Half13.11 mi0.68 mi18119+1466579+886579+8815414(Top 58%)4948(Top 43%)4948(Top 263%)
25K15.53 mi2.42 mi17761+3586390+1896390+18916189(Top 61%)5555(Top 49%)5555(Top 296%)
30K18.64 mi3.11 mi17394+3676184+2066184+20615923(Top 60%)5457(Top 48%)5457(Top 291%)
20M20.00 mi1.36 mi17323+716171+136171+1316631(Top 62%)5933(Top 52%)5933(Top 316%)
21M21.00 mi1.00 mi17183+1406101+706101+7015011(Top 56%)5065(Top 44%)5065(Top 270%)
35K21.75 mi0.75 mi17179+46104-36104-317292(Top 65%)6432(Top 56%)6432(Top 342%)
23M23.00 mi1.25 mi17000+1796025+796025+7914290(Top 54%)4790(Top 42%)4790(Top 255%)
24M24.00 mi1.00 mi16838+1625950+755950+7512662(Top 48%)3962(Top 35%)3962(Top 211%)
40K24.85 mi0.85 mi16656+1825856+945856+9412265(Top 46%)3822(Top 33%)3822(Top 204%)
25.2M25.20 mi0.35 mi16603+535831+255831+2514173(Top 53%)4857(Top 43%)4857(Top 259%)
Finish26.22 mi1.02 mi16447+1565754+775754+7712797(Top 48%)4121(Top 36%)4121(Top 219%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21stories
+97ft-345ft

Overall

17640

Females

6295

F40-44

6295

5K→10K

3.1 - 6.2 mi

Top 73%
×5stories
+79ft-138ft

Overall

19441

Females

7343

F40-44

7343

10K→15K

6.2 - 9.3 mi

Top 66%
×3stories
+67ft-78ft

Overall

17640

Females

6295

F40-44

6295

15K→20K

9.3 - 12.4 mi

Top 64%
×5stories
+106ft-86ft

Overall

17123

Females

6002

F40-44

6002

20K→Half

12.4 - 13.1 mi

Top 58%
×2stories
+19ft-37ft

Overall

15414

Females

4948

F40-44

4948

Half→25K

13.1 - 15.5 mi

Top 61%
×4stories
+66ft-88ft

Overall

16189

Females

5555

F40-44

5555

25K→30K

15.5 - 18.6 mi

Top 60%
×9stories
+181ft-148ft

Overall

15923

Females

5457

F40-44

5457

30K→20M

18.6 - 20.0 mi

Top 62%
×5stories
+64ft-50ft

Overall

16631

Females

5933

F40-44

5933

20M→21M

20.0 - 21.0 mi

Top 56%
×8stories
+106ft-24ft

Overall

15011

Females

5065

F40-44

5065

21M→35K

21.0 - 21.8 mi

Top 65%
×7stories
+17ft-86ft

Overall

17292

Females

6432

F40-44

6432

35K→23M

21.8 - 23.0 mi

Top 54%
×5stories
+23ft-63ft

Overall

14290

Females

4790

F40-44

4790

23M→24M

23.0 - 24.0 mi

Top 48%
×6stories
+12ft-82ft

Overall

12662

Females

3962

F40-44

3962

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

12265

Females

3822

F40-44

3822

40K→25.2M

24.9 - 25.2 mi

Top 53%
×1story
+13ft-16ft

Overall

14173

Females

4857

F40-44

4857

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2stories
+22ft-21ft

Overall

12797

Females

4121

F40-44

4121

Passing Analysis

Category:
Athletes Passed
3270
Passed By
684
Net Change
+2586
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19033
5K → 10K274416-142#19033#19175
10K → 15K56140+521#19175#18654
15K → 20K41526+389#18654#18265
20K → Half1471+146#18265#18119
Half → 25K3679+358#18119#17761
25K → 30K39326+367#17761#17394
30K → 20M12958+71#17394#17323
20M → 21M16626+140#17323#17183
21M → 35K4238+4#17183#17179
35K → 23M19920+179#17179#17000
23M → 24M1675+162#17000#16838
24M → 40K1842+182#16838#16656
40K → 25.2M6310+53#16656#16603
25.2M → Finish1637+156#16603#16447
TOTALS3270684+2586
📊

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