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BOSTON MARATHON 2023

Rachael Blair

Bib: 12359•F

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 37%
Gender (Female)
#0 / 11423
Top 18%
Masters (Masters Women)
#0 / 6539
Top 8%
Division (F45-49)
#0 / 1817
Top 7%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:44
Rank: #10928
Start → 5K
23:44 | 7:38/mi
10K· 6.21 mi
46:55
Rank: #10481 (+447)
5K → 10K
23:11 | 7:28/mi
15K· 9.32 mi
1:09:56
Rank: #10097 (+384)
10K → 15K
23:01 | 7:25/mi
20K· 12.43 mi
1:33:08
Rank: #9775 (+322)
15K → 20K
23:12 | 7:28/mi
Half· 13.11 mi
1:38:10
Rank: #9751 (+24)
20K → Half
5:02 | 7:23/mi
25K· 15.53 mi
1:56:17
Rank: #9524 (+227)
Half → 25K
18:07 | 7:28/mi
30K· 18.64 mi
2:20:11
Rank: #9317 (+207)
25K → 30K
23:54 | 7:42/mi
20M
2:30:51
Rank: #9292 (+25)
30K → 20M
10:40 | 7:51/mi
21M
2:39:39
Rank: #9454 (-162)
20M → 21M
8:48 | 8:48/mi
35K· 21.75 mi
2:45:34
Rank: #9519 (-65)
21M → 35K
5:55 | 7:55/mi
23M
2:55:46
Rank: #9545 (-26)
35K → 23M
10:12 | 8:09/mi
24M
3:03:52
Rank: #9623 (-78)
23M → 24M
8:06 | 8:06/mi
40K· 24.85 mi
3:10:54
Rank: #9674 (-51)
24M → 40K
7:02 | 8:14/mi
25.2M
3:14:04
Rank: #9732 (-58)
40K → 25.2M
3:10 | 9:11/mi
Finish· 26.22 mi
3:22:40
Rank: #9942 (-210)
25.2M → Finish
8:36 | 8:26/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:10
Pace7:29 /mi
2nd Half
Distance13.11 mi
Time1:44:30
Pace7:58 /mi
📊Positive Split: 6.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:0523:447:3823:44
7:38
-
10K
6.21 mi11:14:1646:557:3323:11
7:28
-0:10
15K
9.32 mi11:37:171:09:567:3023:01
7:25
-0:03
20K
12.43 mi12:00:291:33:087:3023:12
7:28
+0:03
Half
13.11 mi12:05:311:38:107:295:02
7:23
-0:05
25K
15.53 mi12:23:381:56:177:2918:07
7:28
+0:05
30K
18.64 mi12:47:322:20:117:3123:54
7:42
+0:14
20M
20.00 mi12:58:122:30:517:3310:40
7:51
+0:09
21M
21.00 mi13:07:002:39:397:368:48
8:48
+0:57
35K
21.75 mi13:12:552:45:347:375:55
7:55
-0:53
23M
23.00 mi13:23:072:55:467:3910:12
8:09
+0:14
24M
24.00 mi13:31:133:03:527:408:06
8:06
-0:03
40K
24.85 mi13:38:153:10:547:417:02
8:14
+0:08
25.2M
25.20 mi13:41:253:14:047:423:10
9:11
+0:57
Finish
26.22 mi13:50:013:22:407:448:36
8:26
-0:45

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

7:23 /mi

Average Pace

7:44 /mi

Slowest Pace

9:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:32:33

46% of race

Time at Steady Pace

1:12:19

36% of race

Time at Slower Pace

37:48

19% of race

Average Pace: 7:44 /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 mi10:51:0523:447:3823:44
7:38
#10928
10K
6.21 mi11:14:1646:557:3323:11
7:28
#10481
15K
9.32 mi11:37:171:09:567:3023:01
7:25
#10097
20K
12.43 mi12:00:291:33:087:3023:12
7:28
#9775
Half
13.11 mi12:05:311:38:107:295:02
7:23
#9751
25K
15.53 mi12:23:381:56:177:2918:07
7:28
#9524
30K
18.64 mi12:47:322:20:117:3123:54
7:42
#9317
20M
20.00 mi12:58:122:30:517:3310:40
7:51
#9292
21M
21.00 mi13:07:002:39:397:368:48
8:48
#9454
35K
21.75 mi13:12:552:45:347:375:55
7:55
#9519
23M
23.00 mi13:23:072:55:467:3910:12
8:09
#9545
24M
24.00 mi13:31:133:03:527:408:06
8:06
#9623
40K
24.85 mi13:38:153:10:547:417:02
8:14
#9674
25.2M
25.20 mi13:41:253:14:047:423:10
9:11
#9732
Finish
26.22 mi13:50:013:22:407:448:36
8:26
#9942
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi10928229422949428(Top 35%)1595(Top 14%)1595(Top 88%)
10K6.21 mi3.10 mi10481+4472061+2332061+23310173(Top 38%)1900(Top 17%)1900(Top 105%)
15K9.32 mi3.11 mi10097+3841863+1981863+1989428(Top 35%)1595(Top 14%)1595(Top 88%)
20K12.43 mi3.11 mi9775+3221740+1231740+1239072(Top 34%)1524(Top 13%)1524(Top 84%)
Half13.11 mi0.68 mi9751+241730+101730+109329(Top 35%)1621(Top 14%)1621(Top 89%)
25K15.53 mi2.42 mi9524+2271661+691661+698593(Top 32%)1384(Top 12%)1384(Top 76%)
30K18.64 mi3.11 mi9317+2071614+471614+478608(Top 32%)1559(Top 14%)1559(Top 86%)
20M20.00 mi1.36 mi9292+251631-171631-179252(Top 35%)1911(Top 17%)1911(Top 105%)
21M21.00 mi1.00 mi9454-1621717-861717-8612255(Top 46%)3532(Top 31%)3532(Top 194%)
35K21.75 mi0.75 mi9519-651756-391756-3911463(Top 43%)3103(Top 27%)3103(Top 171%)
23M23.00 mi1.25 mi9545-261785-291785-2910813(Top 41%)2915(Top 26%)2915(Top 160%)
24M24.00 mi1.00 mi9623-781852-671852-6711947(Top 45%)3548(Top 31%)3548(Top 195%)
40K24.85 mi0.85 mi9674-511902-501902-5011552(Top 43%)3430(Top 30%)3430(Top 189%)
25.2M25.20 mi0.35 mi9732-581944-421944-4213559(Top 51%)4496(Top 39%)4496(Top 247%)
Finish26.22 mi1.02 mi9942-2102066-1222066-12215008(Top 56%)5243(Top 46%)5243(Top 289%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21stories
+97ft-345ft

Overall

9428

Females

1595

F45-49

1595

5K→10K

3.1 - 6.2 mi

Top 38%
×5stories
+79ft-138ft

Overall

10173

Females

1900

F45-49

1900

10K→15K

6.2 - 9.3 mi

Top 35%
×3stories
+67ft-78ft

Overall

9428

Females

1595

F45-49

1595

15K→20K

9.3 - 12.4 mi

Top 34%
×5stories
+106ft-86ft

Overall

9072

Females

1524

F45-49

1524

20K→Half

12.4 - 13.1 mi

Top 35%
×2stories
+19ft-37ft

Overall

9329

Females

1621

F45-49

1621

Half→25K

13.1 - 15.5 mi

Top 32%
×4stories
+66ft-88ft

Overall

8593

Females

1384

F45-49

1384

25K→30K

15.5 - 18.6 mi

Top 32%
×9stories
+181ft-148ft

Overall

8608

Females

1559

F45-49

1559

30K→20M

18.6 - 20.0 mi

Top 35%
×5stories
+64ft-50ft

Overall

9252

Females

1911

F45-49

1911

20M→21M

20.0 - 21.0 mi

Top 46%
×8stories
+106ft-24ft

Overall

12255

Females

3532

F45-49

3532

21M→35K

21.0 - 21.8 mi

Top 43%
×7stories
+17ft-86ft

Overall

11463

Females

3103

F45-49

3103

35K→23M

21.8 - 23.0 mi

Top 41%
×5stories
+23ft-63ft

Overall

10813

Females

2915

F45-49

2915

23M→24M

23.0 - 24.0 mi

Top 45%
×6stories
+12ft-82ft

Overall

11947

Females

3548

F45-49

3548

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

11552

Females

3430

F45-49

3430

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

13559

Females

4496

F45-49

4496

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2stories
+22ft-21ft

Overall

15008

Females

5243

F45-49

5243

Passing Analysis

Category:
Athletes Passed
2298*
Passed By
1312
Net Change
+986
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10928
5K → 10K556*109+447#10928#10481
10K → 15K43046+384#10481#10097
15K → 20K367*45+322#10097#9775
20K → Half4824+24#9775#9751
Half → 25K24417+227#9751#9524
25K → 30K280*73+207#9524#9317
30K → 20M8863+25#9317#9292
20M → 21M46208-162#9292#9454
21M → 35K35100-65#9454#9519
35K → 23M79105-26#9519#9545
23M → 24M38116-78#9545#9623
24M → 40K43*94-51#9623#9674
40K → 25.2M1876-58#9674#9732
25.2M → Finish26*236-210#9732#9942
TOTALS2298*1312+986

* 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