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BOSTON MARATHON 2023

Danielle Clifford

Bib: 12485•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 31%
Gender (Female)
#0 / 11423
Top 12%
Division (F18-39)
#0 / 4884
Top 21%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:42
Rank: #10809
Start → 5K
23:42 | 7:38/mi
10K· 6.21 mi
46:41
Rank: #10162 (+647)
5K → 10K
22:59 | 7:24/mi
15K· 9.32 mi
1:09:35
Rank: #9753 (+409)
10K → 15K
22:54 | 7:22/mi
20K· 12.43 mi
1:32:42
Rank: #9486 (+267)
15K → 20K
23:07 | 7:26/mi
Half· 13.11 mi
1:37:41
Rank: #9438 (+48)
20K → Half
4:59 | 7:18/mi
25K· 15.53 mi
1:55:36
Rank: #9154 (+284)
Half → 25K
17:55 | 7:23/mi
30K· 18.64 mi
2:19:26
Rank: #9006 (+148)
25K → 30K
23:50 | 7:40/mi
20M
2:29:51
Rank: #8890 (+116)
30K → 20M
10:25 | 7:40/mi
21M
2:37:49
Rank: #8764 (+126)
20M → 21M
7:58 | 7:58/mi
35K· 21.75 mi
2:43:24
Rank: #8731 (+33)
21M → 35K
5:35 | 7:28/mi
23M
2:52:59
Rank: #8627 (+104)
35K → 23M
9:35 | 7:39/mi
24M
3:00:13
Rank: #8465 (+162)
23M → 24M
7:14 | 7:14/mi
40K· 24.85 mi
3:06:27
Rank: #8328 (+137)
24M → 40K
6:14 | 7:17/mi
25.2M
3:09:17
Rank: #8300 (+28)
40K → 25.2M
2:50 | 8:13/mi
Finish· 26.22 mi
3:16:30
Rank: #8166 (+134)
25.2M → Finish
7:13 | 7:05/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:41
Pace7:27 /mi
2nd Half
Distance13.11 mi
Time1:38:49
Pace7:32 /mi
📊Positive Split: 1.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:3423:427:3823:42
7:38
-
10K
6.21 mi11:14:3346:417:3122:59
7:24
-0:14
15K
9.32 mi11:37:271:09:357:2822:54
7:22
-0:02
20K
12.43 mi12:00:341:32:427:2823:07
7:26
+0:04
Half
13.11 mi12:05:331:37:417:274:59
7:18
-0:08
25K
15.53 mi12:23:281:55:367:2617:55
7:23
+0:05
30K
18.64 mi12:47:182:19:267:2923:50
7:40
+0:17
20M
20.00 mi12:57:432:29:517:3010:25
7:40
0:00
21M
21.00 mi13:05:412:37:497:317:58
7:58
+0:18
35K
21.75 mi13:11:162:43:247:315:35
7:28
-0:30
23M
23.00 mi13:20:512:52:597:319:35
7:39
+0:11
24M
24.00 mi13:28:053:00:137:317:14
7:14
-0:25
40K
24.85 mi13:34:193:06:277:306:14
7:17
+0:03
25.2M
25.20 mi13:37:093:09:177:312:50
8:13
+0:56
Finish
26.22 mi13:44:223:16:307:307:13
7:05
-1:08

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

7:05 /mi

Average Pace

7:30 /mi

Slowest Pace

8:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:05:42

95% of race

Time at Steady Pace

10:48

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:30 /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 mi10:51:3423:427:3823:42
7:38
#10809
10K
6.21 mi11:14:3346:417:3122:59
7:24
#10162
15K
9.32 mi11:37:271:09:357:2822:54
7:22
#9753
20K
12.43 mi12:00:341:32:427:2823:07
7:26
#9486
Half
13.11 mi12:05:331:37:417:274:59
7:18
#9438
25K
15.53 mi12:23:281:55:367:2617:55
7:23
#9154
30K
18.64 mi12:47:182:19:267:2923:50
7:40
#9006
20M
20.00 mi12:57:432:29:517:3010:25
7:40
#8890
21M
21.00 mi13:05:412:37:497:317:58
7:58
#8764
35K
21.75 mi13:11:162:43:247:315:35
7:28
#8731
23M
23.00 mi13:20:512:52:597:319:35
7:39
#8627
24M
24.00 mi13:28:053:00:137:317:14
7:14
#8465
40K
24.85 mi13:34:193:06:277:306:14
7:17
#8328
25.2M
25.20 mi13:37:093:09:177:312:50
8:13
#8300
Finish
26.22 mi13:44:223:16:307:307:13
7:05
#8166
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi10809222622269112(Top 34%)1488(Top 13%)1488(Top 30%)
10K6.21 mi3.10 mi10162+6471907+3191907+3199620(Top 36%)1663(Top 15%)1663(Top 34%)
15K9.32 mi3.11 mi9753+4091728+1791728+1799112(Top 34%)1488(Top 13%)1488(Top 30%)
20K12.43 mi3.11 mi9486+2671623+1051623+1058843(Top 33%)1421(Top 12%)1421(Top 29%)
Half13.11 mi0.68 mi9438+481606+171606+178698(Top 33%)1358(Top 12%)1358(Top 28%)
25K15.53 mi2.42 mi9154+2841502+1041502+1047958(Top 30%)1171(Top 10%)1171(Top 24%)
30K18.64 mi3.11 mi9006+1481488+141488+148447(Top 32%)1483(Top 13%)1483(Top 30%)
20M20.00 mi1.36 mi8890+1161460+281460+287959(Top 30%)1382(Top 12%)1382(Top 28%)
21M21.00 mi1.00 mi8764+1261430+301430+307171(Top 27%)1196(Top 10%)1196(Top 24%)
35K21.75 mi0.75 mi8731+331431-11431-18303(Top 31%)1605(Top 14%)1605(Top 33%)
23M23.00 mi1.25 mi8627+1041418+131418+137479(Top 28%)1366(Top 12%)1366(Top 28%)
24M24.00 mi1.00 mi8465+1621378+401378+405982(Top 22%)890(Top 8%)890(Top 18%)
40K24.85 mi0.85 mi8328+1371344+341344+345443(Top 20%)798(Top 7%)798(Top 16%)
25.2M25.20 mi0.35 mi8300+281345-11345-17834(Top 29%)1746(Top 15%)1746(Top 36%)
Finish26.22 mi1.02 mi8166+1341318+271318+275752(Top 22%)988(Top 9%)988(Top 20%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21stories
+97ft-345ft

Overall

9112

Females

1488

F18-39

1488

5K→10K

3.1 - 6.2 mi

Top 36%
×5stories
+79ft-138ft

Overall

9620

Females

1663

F18-39

1663

10K→15K

6.2 - 9.3 mi

Top 34%
×3stories
+67ft-78ft

Overall

9112

Females

1488

F18-39

1488

15K→20K

9.3 - 12.4 mi

Top 33%
×5stories
+106ft-86ft

Overall

8843

Females

1421

F18-39

1421

20K→Half

12.4 - 13.1 mi

Top 33%
×2stories
+19ft-37ft

Overall

8698

Females

1358

F18-39

1358

Half→25K

13.1 - 15.5 mi

Top 30%
×4stories
+66ft-88ft

Overall

7958

Females

1171

F18-39

1171

25K→30K

15.5 - 18.6 mi

Top 32%
×9stories
+181ft-148ft

Overall

8447

Females

1483

F18-39

1483

30K→20M

18.6 - 20.0 mi

Top 30%
×5stories
+64ft-50ft

Overall

7959

Females

1382

F18-39

1382

20M→21M

20.0 - 21.0 mi

Top 27%
×8stories
+106ft-24ft

Overall

7171

Females

1196

F18-39

1196

21M→35K

21.0 - 21.8 mi

Top 31%
×7stories
+17ft-86ft

Overall

8303

Females

1605

F18-39

1605

35K→23M

21.8 - 23.0 mi

Top 28%
×5stories
+23ft-63ft

Overall

7479

Females

1366

F18-39

1366

23M→24M

23.0 - 24.0 mi

Top 22%
×6stories
+12ft-82ft

Overall

5982

Females

890

F18-39

890

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5443

Females

798

F18-39

798

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1story
+13ft-16ft

Overall

7834

Females

1746

F18-39

1746

25.2M→Finish

25.2 - 26.2 mi

Top 22%
×2stories
+22ft-21ft

Overall

5752

Females

988

F18-39

988

Passing Analysis

Category:
Athletes Passed
3032*
Passed By
389
Net Change
+2643
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10809
5K → 10K728*81+647#10809#10162
10K → 15K448*39+409#10162#9753
15K → 20K301*34+267#9753#9486
20K → Half557+48#9486#9438
Half → 25K2917+284#9438#9154
25K → 30K23688+148#9154#9006
30K → 20M13923+116#9006#8890
20M → 21M15327+126#8890#8764
21M → 35K5724+33#8764#8731
35K → 23M12925+104#8731#8627
23M → 24M1686+162#8627#8465
24M → 40K1447+137#8465#8328
40K → 25.2M4113+28#8328#8300
25.2M → Finish1428+134#8300#8166
TOTALS3032*389+2643

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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