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BOSTON MARATHON 2023

Jennifer Nichols

Bib: 20226•F

CO

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 41%
Division (F40-44)
#0 / 1878
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
8:36/mi
26:44
↑ 97↓ 3451.5%
10K· 6.21 mi
8:20/mi
52:36
↑ 79↓ 1380.4%
15K· 9.32 mi
8:47/mi
1:19:52
↑ 67↓ 78
20K· 12.43 mi
8:17/mi
1:45:37
↑ 106↓ 860.1%
Half· 13.11 mi
8:15/mi
1:51:15
↑ 19↓ 370.5%
25K· 15.53 mi
9:13/mi
2:13:35
↑ 66↓ 880.2%
30K· 18.64 mi
8:42/mi
2:40:36
↑ 181↓ 1480.2%
20M
8:33/mi
2:52:13
↑ 64↓ 500.2%
21M
10:49/mi
3:03:02
↑ 106↓ 241.6%
35K· 21.75 mi
8:19/mi
3:09:15
↑ 17↓ 861.7%
23M
8:42/mi
3:20:09
↑ 23↓ 630.6%
24M
8:22/mi
3:28:31
↓ 821.3%
40K· 24.85 mi
8:24/mi
3:35:42
↓ 200.3%
25.2M
8:51/mi
3:38:45
↑ 13↓ 160.2%
Finish· 26.22 mi
8:01/mi
3:46:55
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:15
Pace8:29 /mi
2nd Half
Distance13.11 mi
Time1:55:40
Pace8:49 /mi
📊Positive Split: 4.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:1026:448:3626:44
8:36
-
10K
6.21 mi11:45:0252:368:2825:52
8:20
-0:16
15K
9.32 mi12:12:181:19:528:3427:16
8:47
+0:27
20K
12.43 mi12:38:031:45:378:3025:45
8:17
-0:30
Half
13.11 mi12:43:411:51:158:295:38
8:15
-0:02
25K
15.53 mi13:06:012:13:358:3622:20
9:13
+0:58
30K
18.64 mi13:33:022:40:368:3727:01
8:42
-0:31
20M
20.00 mi13:44:392:52:138:3711:37
8:33
-0:09
21M
21.00 mi13:55:283:03:028:4310:49
10:49
+2:16
35K
21.75 mi14:01:413:09:158:426:13
8:19
-2:30
23M
23.00 mi14:12:353:20:098:4210:54
8:42
+0:23
24M
24.00 mi14:20:573:28:318:418:22
8:22
-0:20
40K
24.85 mi14:28:083:35:428:417:11
8:24
+0:02
25.2M
25.20 mi14:31:113:38:458:413:03
8:51
+0:27
Finish
26.22 mi14:39:213:46:558:408:10
8:01
-0:50

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

8:01 /mi

Average Pace

8:40 /mi

Slowest Pace

10:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

8:10

4% of race

Time at Steady Pace

3:05:36

82% of race

Time at Slower Pace

33:09

15% of race

Average Pace: 8:39 /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 mi11:19:1026:448:3626:44
8:36
#18264
10K
6.21 mi11:45:0252:368:2825:52
8:20
#17684
15K
9.32 mi12:12:181:19:528:3427:16
8:47
#18292
20K
12.43 mi12:38:031:45:378:3025:45
8:17
#17556
Half
13.11 mi12:43:411:51:158:295:38
8:15
#17462
25K
15.53 mi13:06:012:13:358:3622:20
9:13
#17946
30K
18.64 mi13:33:022:40:368:3727:01
8:42
#17464
20M
20.00 mi13:44:392:52:138:3711:37
8:33
#17203
21M
21.00 mi13:55:283:03:028:4310:49
10:49
#17480
35K
21.75 mi14:01:413:09:158:426:13
8:19
#17351
23M
23.00 mi14:12:353:20:098:4210:54
8:42
#17183
24M
24.00 mi14:20:573:28:318:418:22
8:22
#17026
40K
24.85 mi14:28:083:35:428:417:11
8:24
#16861
25.2M
25.20 mi14:31:113:38:458:413:03
8:51
#16780
Finish
26.22 mi14:39:213:46:558:408:10
8:01
#16603
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi182646715671519380(Top 73%)7315(Top 64%)7315(Top 390%)
10K6.21 mi3.10 mi17684+5806335+3806335+38017105(Top 64%)5937(Top 52%)5937(Top 316%)
15K9.32 mi3.11 mi18292-6086685-3506685-35019380(Top 73%)7315(Top 64%)7315(Top 390%)
20K12.43 mi3.11 mi17556+7366251+4346251+43415555(Top 58%)5069(Top 44%)5069(Top 270%)
Half13.11 mi0.68 mi17462+946199+526199+5216268(Top 61%)5469(Top 48%)5469(Top 291%)
25K15.53 mi2.42 mi17946-4846506-3076506-30719898(Top 75%)7634(Top 67%)7634(Top 406%)
30K18.64 mi3.11 mi17464+4826233+2736233+27315504(Top 58%)5224(Top 46%)5224(Top 278%)
20M20.00 mi1.36 mi17203+2616099+1346099+13413963(Top 52%)4397(Top 38%)4397(Top 234%)
21M21.00 mi1.00 mi17480-2776280-1816280-18120416(Top 77%)8151(Top 71%)8151(Top 434%)
35K21.75 mi0.75 mi17351+1296212+686212+6814216(Top 53%)4696(Top 41%)4696(Top 250%)
23M23.00 mi1.25 mi17183+1686124+886124+8814449(Top 54%)4886(Top 43%)4886(Top 260%)
24M24.00 mi1.00 mi17026+1576061+636061+6313696(Top 51%)4515(Top 40%)4515(Top 240%)
40K24.85 mi0.85 mi16861+1655981+805981+8012766(Top 48%)4104(Top 36%)4104(Top 219%)
25.2M25.20 mi0.35 mi16780+815937+445937+4411732(Top 44%)3628(Top 32%)3628(Top 193%)
Finish26.22 mi1.02 mi16603+1775842+955842+9512280(Top 46%)3864(Top 34%)3864(Top 206%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 73%
×21story building
+97ft-345ft

Overall

19380

Females

7315

F40-44

7315

5K→10K

3.1 - 6.2 mi

Top 64%
×5story building
+79ft-138ft

Overall

17105

Females

5937

F40-44

5937

10K→15K

6.2 - 9.3 mi

Top 73%
×3story building
+67ft-78ft

Overall

19380

Females

7315

F40-44

7315

15K→20K

9.3 - 12.4 mi

Top 58%
×5story building
+106ft-86ft

Overall

15555

Females

5069

F40-44

5069

20K→Half

12.4 - 13.1 mi

Top 61%
×2story building
+19ft-37ft

Overall

16268

Females

5469

F40-44

5469

Half→25K

13.1 - 15.5 mi

Top 75%
×4story building
+66ft-88ft

Overall

19898

Females

7634

F40-44

7634

25K→30K

15.5 - 18.6 mi

Top 58%
×9story building
+181ft-148ft

Overall

15504

Females

5224

F40-44

5224

30K→20M

18.6 - 20.0 mi

Top 52%
×5story building
+64ft-50ft

Overall

13963

Females

4397

F40-44

4397

20M→21M

20.0 - 21.0 mi

Top 77%
×8story building
+106ft-24ft

Overall

20416

Females

8151

F40-44

8151

21M→35K

21.0 - 21.8 mi

Top 53%
×7story building
+17ft-86ft

Overall

14216

Females

4696

F40-44

4696

35K→23M

21.8 - 23.0 mi

Top 54%
×5story building
+23ft-63ft

Overall

14449

Females

4886

F40-44

4886

23M→24M

23.0 - 24.0 mi

Top 51%
×6story building
+12ft-82ft

Overall

13696

Females

4515

F40-44

4515

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

12766

Females

4104

F40-44

4104

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

11732

Females

3628

F40-44

3628

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2story building
+22ft-21ft

Overall

12280

Females

3864

F40-44

3864

Passing Analysis

Category:
Athletes Passed
3334
Passed By
1673
Net Change
+1661
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18264
5K → 10K713133+580#18264#17684
10K → 15K47655-608#17684#18292
15K → 20K7415+736#18292#17556
20K → Half10410+94#17556#17462
Half → 25K34518-484#17462#17946
25K → 30K49513+482#17946#17464
30K → 20M2654+261#17464#17203
20M → 21M21298-277#17203#17480
21M → 35K1334+129#17480#17351
35K → 23M18315+168#17351#17183
23M → 24M1625+157#17183#17026
24M → 40K1672+165#17026#16861
40K → 25.2M832+81#16861#16780
25.2M → Finish1869+177#16780#16603
TOTALS33341673+1661
📊

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