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BOSTON MARATHON 2023

Nichole Bosson

Bib: 12295•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 36%
Gender (Female)
#0 / 11423
Top 17%
Masters (Masters Women)
#0 / 6539
Top 7%
Division (F40-44)
#0 / 1878
Top 14%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:35
Rank: #10462
Start → 5K
23:35 | 7:35/mi
10K· 6.21 mi
47:03
Rank: #10663 (-201)
5K → 10K
23:28 | 7:33/mi
15K· 9.32 mi
1:10:42
Rank: #10804 (-141)
10K → 15K
23:39 | 7:37/mi
20K· 12.43 mi
1:34:16
Rank: #10578 (+226)
15K → 20K
23:34 | 7:35/mi
Half· 13.11 mi
1:39:26
Rank: #10589 (-11)
20K → Half
5:10 | 7:34/mi
25K· 15.53 mi
1:57:57
Rank: #10430 (+159)
Half → 25K
18:31 | 7:38/mi
30K· 18.64 mi
2:22:09
Rank: #10177 (+253)
25K → 30K
24:12 | 7:47/mi
20M
2:32:44
Rank: #10043 (+134)
30K → 20M
10:35 | 7:47/mi
21M
2:40:56
Rank: #9917 (+126)
20M → 21M
8:12 | 8:12/mi
35K· 21.75 mi
2:46:34
Rank: #9869 (+48)
21M → 35K
5:38 | 7:32/mi
23M
2:56:25
Rank: #9781 (+88)
35K → 23M
9:51 | 7:52/mi
24M
3:04:03
Rank: #9685 (+96)
23M → 24M
7:38 | 7:38/mi
40K· 24.85 mi
3:10:42
Rank: #9606 (+79)
24M → 40K
6:39 | 7:47/mi
25.2M
3:13:34
Rank: #9563 (+43)
40K → 25.2M
2:52 | 8:19/mi
Finish· 26.22 mi
3:21:25
Rank: #9562 (+1)
25.2M → Finish
7:51 | 7:42/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:26
Pace7:35 /mi
2nd Half
Distance13.11 mi
Time1:41:59
Pace7:47 /mi
📊Positive Split: 2.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:0823:357:3523:35
7:35
-
10K
6.21 mi11:14:3647:037:3423:28
7:33
-0:02
15K
9.32 mi11:38:151:10:427:3523:39
7:37
+0:04
20K
12.43 mi12:01:491:34:167:3523:34
7:35
-0:02
Half
13.11 mi12:06:591:39:267:355:10
7:34
-0:01
25K
15.53 mi12:25:301:57:577:3618:31
7:38
+0:04
30K
18.64 mi12:49:422:22:097:3824:12
7:47
+0:09
20M
20.00 mi13:00:172:32:447:3810:35
7:47
0:00
21M
21.00 mi13:08:292:40:567:408:12
8:12
+0:25
35K
21.75 mi13:14:072:46:347:405:38
7:32
-0:40
23M
23.00 mi13:23:582:56:257:409:51
7:52
+0:20
24M
24.00 mi13:31:363:04:037:407:38
7:38
-0:14
40K
24.85 mi13:38:153:10:427:406:39
7:47
+0:09
25.2M
25.20 mi13:41:073:13:347:412:52
8:19
+0:32
Finish
26.22 mi13:48:583:21:257:417:51
7:42
-0:37

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

7:32 /mi

Average Pace

7:41 /mi

Slowest Pace

8:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:18:33

99% of race

Time at Steady Pace

2:52

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:41 /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 mi10:51:0823:357:3523:35
7:35
#10462
10K
6.21 mi11:14:3647:037:3423:28
7:33
#10663
15K
9.32 mi11:38:151:10:427:3523:39
7:37
#10804
20K
12.43 mi12:01:491:34:167:3523:34
7:35
#10578
Half
13.11 mi12:06:591:39:267:355:10
7:34
#10589
25K
15.53 mi12:25:301:57:577:3618:31
7:38
#10430
30K
18.64 mi12:49:422:22:097:3824:12
7:47
#10177
20M
20.00 mi13:00:172:32:447:3810:35
7:47
#10043
21M
21.00 mi13:08:292:40:567:408:12
8:12
#9917
35K
21.75 mi13:14:072:46:347:405:38
7:32
#9869
23M
23.00 mi13:23:582:56:257:409:51
7:52
#9781
24M
24.00 mi13:31:363:04:037:407:38
7:38
#9685
40K
24.85 mi13:38:153:10:427:406:39
7:47
#9606
25.2M
25.20 mi13:41:073:13:347:412:52
8:19
#9563
Finish
26.22 mi13:48:583:21:257:417:51
7:42
#9562
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi104622067206711126(Top 42%)2417(Top 21%)2417(Top 129%)
10K6.21 mi3.10 mi10663-2012152-852152-8510912(Top 41%)2264(Top 20%)2264(Top 121%)
15K9.32 mi3.11 mi10804-1412234-822234-8211126(Top 42%)2417(Top 21%)2417(Top 129%)
20K12.43 mi3.11 mi10578+2262113+1212113+1219990(Top 38%)1908(Top 17%)1908(Top 102%)
Half13.11 mi0.68 mi10589-112114-12114-110847(Top 41%)2276(Top 20%)2276(Top 121%)
25K15.53 mi2.42 mi10430+1592060+542060+549834(Top 37%)1931(Top 17%)1931(Top 103%)
30K18.64 mi3.11 mi10177+2531979+811979+819291(Top 35%)1832(Top 16%)1832(Top 98%)
20M20.00 mi1.36 mi10043+1341942+371942+378796(Top 33%)1716(Top 15%)1716(Top 91%)
21M21.00 mi1.00 mi9917+1261910+321910+328645(Top 32%)1774(Top 16%)1774(Top 94%)
35K21.75 mi0.75 mi9869+481903+71903+78781(Top 33%)1814(Top 16%)1814(Top 97%)
23M23.00 mi1.25 mi9781+881902+11902+18884(Top 33%)1966(Top 17%)1966(Top 105%)
24M24.00 mi1.00 mi9685+961881+211881+218656(Top 33%)1943(Top 17%)1943(Top 103%)
40K24.85 mi0.85 mi9606+791872+91872+98563(Top 32%)1965(Top 17%)1965(Top 105%)
25.2M25.20 mi0.35 mi9563+431869+31869+38445(Top 32%)1996(Top 17%)1996(Top 106%)
Finish26.22 mi1.02 mi9562+11894-251894-2510014(Top 38%)2701(Top 24%)2701(Top 144%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21stories
+97ft-345ft

Overall

11126

Females

2417

F40-44

2417

5K→10K

3.1 - 6.2 mi

Top 41%
×5stories
+79ft-138ft

Overall

10912

Females

2264

F40-44

2264

10K→15K

6.2 - 9.3 mi

Top 42%
×3stories
+67ft-78ft

Overall

11126

Females

2417

F40-44

2417

15K→20K

9.3 - 12.4 mi

Top 38%
×5stories
+106ft-86ft

Overall

9990

Females

1908

F40-44

1908

20K→Half

12.4 - 13.1 mi

Top 41%
×2stories
+19ft-37ft

Overall

10847

Females

2276

F40-44

2276

Half→25K

13.1 - 15.5 mi

Top 37%
×4stories
+66ft-88ft

Overall

9834

Females

1931

F40-44

1931

25K→30K

15.5 - 18.6 mi

Top 35%
×9stories
+181ft-148ft

Overall

9291

Females

1832

F40-44

1832

30K→20M

18.6 - 20.0 mi

Top 33%
×5stories
+64ft-50ft

Overall

8796

Females

1716

F40-44

1716

20M→21M

20.0 - 21.0 mi

Top 32%
×8stories
+106ft-24ft

Overall

8645

Females

1774

F40-44

1774

21M→35K

21.0 - 21.8 mi

Top 33%
×7stories
+17ft-86ft

Overall

8781

Females

1814

F40-44

1814

35K→23M

21.8 - 23.0 mi

Top 33%
×5stories
+23ft-63ft

Overall

8884

Females

1966

F40-44

1966

23M→24M

23.0 - 24.0 mi

Top 33%
×6stories
+12ft-82ft

Overall

8656

Females

1943

F40-44

1943

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

8563

Females

1965

F40-44

1965

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

8445

Females

1996

F40-44

1996

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2stories
+22ft-21ft

Overall

10014

Females

2701

F40-44

2701

Passing Analysis

Category:
Athletes Passed
2000*
Passed By
1100
Net Change
+900
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10462
5K → 10K204405-201#10462#10663
10K → 15K135276-141#10663#10804
15K → 20K28963+226#10804#10578
20K → Half3243-11#10578#10589
Half → 25K20546+159#10589#10430
25K → 30K294*41+253#10430#10177
30K → 20M162*28+134#10177#10043
20M → 21M155*29+126#10043#9917
21M → 35K6517+48#9917#9869
35K → 23M12840+88#9869#9781
23M → 24M11014+96#9781#9685
24M → 40K95*16+79#9685#9606
40K → 25.2M5815+43#9606#9563
25.2M → Finish6867+1#9563#9562
TOTALS2000*1100+900

* 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