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BOSTON MARATHON 2023

Holly Blais

Bib: 12702•F

NH

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 41%
Gender (Female)
#0 / 11423
Top 22%
Masters (Masters Women)
#0 / 6539
Top 10%
Division (F45-49)
#0 / 1817
Top 11%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:43/mi
24:00
↑ 97↓ 3451.5%
10K· 6.21 mi
7:43/mi
48:00
↑ 79↓ 1380.4%
15K· 9.32 mi
7:44/mi
1:12:03
↑ 67↓ 78
20K· 12.43 mi
7:53/mi
1:36:34
↑ 106↓ 860.1%
Half· 13.11 mi
7:50/mi
1:41:55
↑ 19↓ 370.5%
25K· 15.53 mi
7:55/mi
2:01:07
↑ 66↓ 880.2%
30K· 18.64 mi
8:11/mi
2:26:32
↑ 181↓ 1480.2%
20M
8:03/mi
2:37:29
↑ 64↓ 500.2%
21M
8:38/mi
2:46:07
↑ 106↓ 241.6%
35K· 21.75 mi
7:34/mi
2:51:47
↑ 17↓ 861.7%
23M
7:50/mi
3:01:35
↑ 23↓ 630.6%
24M
7:30/mi
3:09:05
↓ 821.3%
40K· 24.85 mi
7:38/mi
3:15:37
↓ 200.3%
25.2M
8:10/mi
3:18:26
↑ 13↓ 160.2%
Finish· 26.22 mi
7:18/mi
3:25:52
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:55
Pace7:46 /mi
2nd Half
Distance13.11 mi
Time1:43:57
Pace7:56 /mi
📊Positive Split: 2.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:0924:007:4324:00
7:43
-
10K
6.21 mi11:19:0948:007:4324:00
7:43
0:00
15K
9.32 mi11:43:121:12:037:4424:03
7:44
+0:01
20K
12.43 mi12:07:431:36:347:4624:31
7:53
+0:09
Half
13.11 mi12:13:041:41:557:465:21
7:50
-0:03
25K
15.53 mi12:32:162:01:077:4819:12
7:55
+0:05
30K
18.64 mi12:57:412:26:327:5225:25
8:11
+0:16
20M
20.00 mi13:08:382:37:297:5210:57
8:03
-0:08
21M
21.00 mi13:17:162:46:077:558:38
8:38
+0:35
35K
21.75 mi13:22:562:51:477:545:40
7:34
-1:04
23M
23.00 mi13:32:443:01:357:549:48
7:50
+0:16
24M
24.00 mi13:40:143:09:057:537:30
7:30
-0:20
40K
24.85 mi13:46:463:15:377:526:32
7:38
+0:08
25.2M
25.20 mi13:49:353:18:267:522:49
8:10
+0:32
Finish
26.22 mi13:57:013:25:527:517:26
7:18
-0:52

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

7:18 /mi

Average Pace

7:51 /mi

Slowest Pace

8:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:38:03

77% of race

Time at Steady Pace

39:11

19% of race

Time at Slower Pace

8:38

4% of race

Average Pace: 7:51 /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 mi10:55:0924:007:4324:00
7:43
#11688
10K
6.21 mi11:19:0948:007:4324:00
7:43
#12059
15K
9.32 mi11:43:121:12:037:4424:03
7:44
#12078
20K
12.43 mi12:07:431:36:347:4624:31
7:53
#12129
Half
13.11 mi12:13:041:41:557:465:21
7:50
#12181
25K
15.53 mi12:32:162:01:077:4819:12
7:55
#12154
30K
18.64 mi12:57:412:26:327:5225:25
8:11
#12128
20M
20.00 mi13:08:382:37:297:5210:57
8:03
#11999
21M
21.00 mi13:17:162:46:077:558:38
8:38
#11951
35K
21.75 mi13:22:562:51:477:545:40
7:34
#11838
23M
23.00 mi13:32:443:01:357:549:48
7:50
#11606
24M
24.00 mi13:40:143:09:057:537:30
7:30
#11397
40K
24.85 mi13:46:463:15:377:526:32
7:38
#11214
25.2M
25.20 mi13:49:353:18:267:522:49
8:10
#11127
Finish
26.22 mi13:57:013:25:527:517:26
7:18
#10935
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi116882686268612215(Top 46%)3021(Top 26%)3021(Top 166%)
10K6.21 mi3.10 mi12059-3712892-2062892-20612476(Top 47%)3132(Top 27%)3132(Top 172%)
15K9.32 mi3.11 mi12078-192934-422934-4212215(Top 46%)3021(Top 26%)3021(Top 166%)
20K12.43 mi3.11 mi12129-512995-612995-6112548(Top 47%)3279(Top 29%)3279(Top 180%)
Half13.11 mi0.68 mi12181-523026-313026-3113104(Top 49%)3538(Top 31%)3538(Top 195%)
25K15.53 mi2.42 mi12154+273025+13025+112052(Top 45%)3102(Top 27%)3102(Top 171%)
30K18.64 mi3.11 mi12128+263047-223047-2212198(Top 46%)3295(Top 29%)3295(Top 181%)
20M20.00 mi1.36 mi11999+1292997+502997+5010726(Top 40%)2594(Top 23%)2594(Top 143%)
21M21.00 mi1.00 mi11951+482985+122985+1211270(Top 42%)3009(Top 26%)3009(Top 166%)
35K21.75 mi0.75 mi11838+1132935+502935+509149(Top 34%)1999(Top 17%)1999(Top 110%)
23M23.00 mi1.25 mi11606+2322829+1062829+1068632(Top 32%)1859(Top 16%)1859(Top 102%)
24M24.00 mi1.00 mi11397+2092733+962733+967747(Top 29%)1587(Top 14%)1587(Top 87%)
40K24.85 mi0.85 mi11214+1832663+702663+707613(Top 29%)1620(Top 14%)1620(Top 89%)
25.2M25.20 mi0.35 mi11127+872629+342629+347605(Top 29%)1675(Top 15%)1675(Top 92%)
Finish26.22 mi1.02 mi10935+1922561+682561+687147(Top 27%)1494(Top 13%)1494(Top 82%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21story building
+97ft-345ft

Overall

12215

Females

3021

F45-49

3021

5K→10K

3.1 - 6.2 mi

Top 47%
×5story building
+79ft-138ft

Overall

12476

Females

3132

F45-49

3132

10K→15K

6.2 - 9.3 mi

Top 46%
×3story building
+67ft-78ft

Overall

12215

Females

3021

F45-49

3021

15K→20K

9.3 - 12.4 mi

Top 47%
×5story building
+106ft-86ft

Overall

12548

Females

3279

F45-49

3279

20K→Half

12.4 - 13.1 mi

Top 49%
×2story building
+19ft-37ft

Overall

13104

Females

3538

F45-49

3538

Half→25K

13.1 - 15.5 mi

Top 45%
×4story building
+66ft-88ft

Overall

12052

Females

3102

F45-49

3102

25K→30K

15.5 - 18.6 mi

Top 46%
×9story building
+181ft-148ft

Overall

12198

Females

3295

F45-49

3295

30K→20M

18.6 - 20.0 mi

Top 40%
×5story building
+64ft-50ft

Overall

10726

Females

2594

F45-49

2594

20M→21M

20.0 - 21.0 mi

Top 42%
×8story building
+106ft-24ft

Overall

11270

Females

3009

F45-49

3009

21M→35K

21.0 - 21.8 mi

Top 34%
×7story building
+17ft-86ft

Overall

9149

Females

1999

F45-49

1999

35K→23M

21.8 - 23.0 mi

Top 32%
×5story building
+23ft-63ft

Overall

8632

Females

1859

F45-49

1859

23M→24M

23.0 - 24.0 mi

Top 29%
×6story building
+12ft-82ft

Overall

7747

Females

1587

F45-49

1587

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

7613

Females

1620

F45-49

1620

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1story
+13ft-16ft

Overall

7605

Females

1675

F45-49

1675

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2story building
+22ft-21ft

Overall

7147

Females

1494

F45-49

1494

Passing Analysis

Category:
Athletes Passed
2196
Passed By
1443
Net Change
+753
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11688
5K → 10K161532-371#11688#12059
10K → 15K196215-19#12059#12078
15K → 20K153204-51#12078#12129
20K → Half1466-52#12129#12181
Half → 25K141114+27#12181#12154
25K → 30K209183+26#12154#12128
30K → 20M16637+129#12128#11999
20M → 21M10860+48#11999#11951
21M → 35K1207+113#11951#11838
35K → 23M24311+232#11838#11606
23M → 24M2123+209#11606#11397
24M → 40K1863+183#11397#11214
40K → 25.2M914+87#11214#11127
25.2M → Finish1964+192#11127#10935
TOTALS21961443+753
📊

Passing Visuals

Category:
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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