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BOSTON MARATHON 2023

Tiffany Dou

Bib: 18213•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
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
26:54
Rank: #18639
Start → 5K
26:54 | 8:39/mi
10K· 6.21 mi
54:04
Rank: #19119 (-480)
5K → 10K
27:10 | 8:45/mi
15K· 9.32 mi
1:22:06
Rank: #19646 (-527)
10K → 15K
28:02 | 9:01/mi
20K· 12.43 mi
1:50:45
Rank: #19917 (-271)
15K → 20K
28:39 | 9:13/mi
Half· 13.11 mi
1:57:01
Rank: #20004 (-87)
20K → Half
6:16 | 9:11/mi
25K· 15.53 mi
2:20:10
Rank: #20228 (-224)
Half → 25K
23:09 | 9:33/mi
30K· 18.64 mi
2:49:58
Rank: #20145 (+83)
25K → 30K
29:48 | 9:36/mi
20M
3:02:45
Rank: #19986 (+159)
30K → 20M
12:47 | 9:24/mi
21M
3:12:34
Rank: #19804 (+182)
20M → 21M
9:49 | 9:49/mi
35K· 21.75 mi
3:19:11
Rank: #19714 (+90)
21M → 35K
6:37 | 8:51/mi
23M
3:30:35
Rank: #19548 (+166)
35K → 23M
11:24 | 9:06/mi
24M
3:39:28
Rank: #19431 (+117)
23M → 24M
8:53 | 8:53/mi
40K· 24.85 mi
3:47:21
Rank: #19360 (+71)
24M → 40K
7:53 | 9:13/mi
25.2M
3:50:49
Rank: #19336 (+24)
40K → 25.2M
3:28 | 10:03/mi
Finish· 26.22 mi
3:59:52
Rank: #19285 (+51)
25.2M → Finish
9:03 | 8:53/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:57:01
Pace8:56 /mi
2nd Half
Distance13.11 mi
Time2:02:51
Pace9:22 /mi
📊Positive Split: 5.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:1026:548:3926:54
8:39
-
10K
6.21 mi11:45:2054:048:4227:10
8:45
+0:06
15K
9.32 mi12:13:221:22:068:4928:02
9:01
+0:16
20K
12.43 mi12:42:011:50:458:5528:39
9:13
+0:12
Half
13.11 mi12:48:171:57:018:566:16
9:11
-0:02
25K
15.53 mi13:11:262:20:109:0123:09
9:33
+0:22
30K
18.64 mi13:41:142:49:589:0729:48
9:36
+0:03
20M
20.00 mi13:54:013:02:459:0812:47
9:24
-0:12
21M
21.00 mi14:03:503:12:349:109:49
9:49
+0:25
35K
21.75 mi14:10:273:19:119:106:37
8:51
-0:58
23M
23.00 mi14:21:513:30:359:0911:24
9:06
+0:15
24M
24.00 mi14:30:443:39:289:098:53
8:53
-0:13
40K
24.85 mi14:38:373:47:219:097:53
9:13
+0:20
25.2M
25.20 mi14:42:053:50:499:103:28
10:03
+0:50
Finish
26.22 mi14:51:083:59:529:099:03
8:53
-1:10

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

8:39 /mi

Average Pace

9:09 /mi

Slowest Pace

10:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:53:38

72% of race

Time at Steady Pace

1:06:14

28% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:09 /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 mi11:18:1026:548:3926:54
8:39
#18639
10K
6.21 mi11:45:2054:048:4227:10
8:45
#19119
15K
9.32 mi12:13:221:22:068:4928:02
9:01
#19646
20K
12.43 mi12:42:011:50:458:5528:39
9:13
#19917
Half
13.11 mi12:48:171:57:018:566:16
9:11
#20004
25K
15.53 mi13:11:262:20:109:0123:09
9:33
#20228
30K
18.64 mi13:41:142:49:589:0729:48
9:36
#20145
20M
20.00 mi13:54:013:02:459:0812:47
9:24
#19986
21M
21.00 mi14:03:503:12:349:109:49
9:49
#19804
35K
21.75 mi14:10:273:19:119:106:37
8:51
#19714
23M
23.00 mi14:21:513:30:359:0911:24
9:06
#19548
24M
24.00 mi14:30:443:39:289:098:53
8:53
#19431
40K
24.85 mi14:38:373:47:219:097:53
9:13
#19360
25.2M
25.20 mi14:42:053:50:499:103:28
10:03
#19336
Finish
26.22 mi14:51:083:59:529:099:03
8:53
#19285
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi186396962696220609(Top 77%)8015(Top 70%)8015(Top 427%)
10K6.21 mi3.10 mi19119-4807229-2677229-26719659(Top 74%)7488(Top 66%)7488(Top 399%)
15K9.32 mi3.11 mi19646-5277536-3077536-30720609(Top 77%)8015(Top 70%)8015(Top 427%)
20K12.43 mi3.11 mi19917-2717676-1407676-14020659(Top 78%)8033(Top 70%)8033(Top 428%)
Half13.11 mi0.68 mi20004-877726-507726-5021108(Top 79%)8302(Top 73%)8302(Top 442%)
25K15.53 mi2.42 mi20228-2247831-1057831-10520998(Top 79%)8264(Top 72%)8264(Top 440%)
30K18.64 mi3.11 mi20145+837810+217810+2119767(Top 74%)7632(Top 67%)7632(Top 406%)
20M20.00 mi1.36 mi19986+1597734+767734+7618505(Top 70%)7035(Top 62%)7035(Top 375%)
21M21.00 mi1.00 mi19804+1827626+1087626+10817344(Top 65%)6401(Top 56%)6401(Top 341%)
35K21.75 mi0.75 mi19714+907580+467580+4617229(Top 65%)6414(Top 56%)6414(Top 342%)
23M23.00 mi1.25 mi19548+1667493+877493+8716596(Top 62%)6085(Top 53%)6085(Top 324%)
24M24.00 mi1.00 mi19431+1177438+557438+5516727(Top 63%)6221(Top 54%)6221(Top 331%)
40K24.85 mi0.85 mi19360+717405+337405+3317218(Top 65%)6530(Top 57%)6530(Top 348%)
25.2M25.20 mi0.35 mi19336+247393+127393+1217657(Top 66%)6784(Top 59%)6784(Top 361%)
Finish26.22 mi1.02 mi19285+517372+217372+2117446(Top 66%)6620(Top 58%)6620(Top 353%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 77%
×21stories
+97ft-345ft

Overall

20609

Females

8015

F40-44

8015

5K→10K

3.1 - 6.2 mi

Top 74%
×5stories
+79ft-138ft

Overall

19659

Females

7488

F40-44

7488

10K→15K

6.2 - 9.3 mi

Top 77%
×3stories
+67ft-78ft

Overall

20609

Females

8015

F40-44

8015

15K→20K

9.3 - 12.4 mi

Top 78%
×5stories
+106ft-86ft

Overall

20659

Females

8033

F40-44

8033

20K→Half

12.4 - 13.1 mi

Top 79%
×2stories
+19ft-37ft

Overall

21108

Females

8302

F40-44

8302

Half→25K

13.1 - 15.5 mi

Top 79%
×4stories
+66ft-88ft

Overall

20998

Females

8264

F40-44

8264

25K→30K

15.5 - 18.6 mi

Top 74%
×9stories
+181ft-148ft

Overall

19767

Females

7632

F40-44

7632

30K→20M

18.6 - 20.0 mi

Top 70%
×5stories
+64ft-50ft

Overall

18505

Females

7035

F40-44

7035

20M→21M

20.0 - 21.0 mi

Top 65%
×8stories
+106ft-24ft

Overall

17344

Females

6401

F40-44

6401

21M→35K

21.0 - 21.8 mi

Top 65%
×7stories
+17ft-86ft

Overall

17229

Females

6414

F40-44

6414

35K→23M

21.8 - 23.0 mi

Top 62%
×5stories
+23ft-63ft

Overall

16596

Females

6085

F40-44

6085

23M→24M

23.0 - 24.0 mi

Top 63%
×6stories
+12ft-82ft

Overall

16727

Females

6221

F40-44

6221

24M→40K

24.0 - 24.9 mi

Top 65%
×1story
+6ft-20ft

Overall

17218

Females

6530

F40-44

6530

40K→25.2M

24.9 - 25.2 mi

Top 66%
×1story
+13ft-16ft

Overall

17657

Females

6784

F40-44

6784

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2stories
+22ft-21ft

Overall

17446

Females

6620

F40-44

6620

Passing Analysis

Category:
Athletes Passed
1533
Passed By
2179
Net Change
-646
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18639
5K → 10K160640-480#18639#19119
10K → 15K45572-527#19119#19646
15K → 20K90361-271#19646#19917
20K → Half1299-87#19917#20004
Half → 25K75299-224#20004#20228
25K → 30K17996+83#20228#20145
30K → 20M17819+159#20145#19986
20M → 21M19513+182#19986#19804
21M → 35K988+90#19804#19714
35K → 23M1726+166#19714#19548
23M → 24M1258+117#19548#19431
24M → 40K9120+71#19431#19360
40K → 25.2M3410+24#19360#19336
25.2M → Finish7928+51#19336#19285
TOTALS15332179-646
📊

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