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BOSTON MARATHON 2023

John Nichols

Bib: 1495•M

CO

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 7%
Gender (Male)
#0 / 15176
Top 12%
Masters (Masters Men)
#0 / 9891
Top 3%
Division (M40-44)
#0 / 2241
Top 10%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:59
Rank: #1944
Start → 5K
19:59 | 6:26/mi
10K· 6.21 mi
39:37
Rank: #1876 (+68)
5K → 10K
19:38 | 6:19/mi
15K· 9.32 mi
59:01
Rank: #1716 (+160)
10K → 15K
19:24 | 6:15/mi
20K· 12.43 mi
1:18:37
Rank: #1641 (+75)
15K → 20K
19:36 | 6:19/mi
Half· 13.11 mi
1:22:55
Rank: #1649 (-8)
20K → Half
4:18 | 6:18/mi
25K· 15.53 mi
1:38:12
Rank: #1573 (+76)
Half → 25K
15:17 | 6:18/mi
30K· 18.64 mi
1:58:31
Rank: #1584 (-11)
25K → 30K
20:19 | 6:32/mi
20M
2:07:26
Rank: #1568 (+16)
30K → 20M
8:55 | 6:34/mi
21M
2:14:35
Rank: #1604 (-36)
20M → 21M
7:09 | 7:09/mi
35K· 21.75 mi
2:19:21
Rank: #1602 (+2)
21M → 35K
4:46 | 6:22/mi
23M
2:27:52
Rank: #1636 (-34)
35K → 23M
8:31 | 6:48/mi
24M
2:34:41
Rank: #1694 (-58)
23M → 24M
6:49 | 6:49/mi
40K· 24.85 mi
2:40:34
Rank: #1712 (-18)
24M → 40K
5:53 | 6:53/mi
25.2M
2:43:13
Rank: #1746 (-34)
40K → 25.2M
2:39 | 7:41/mi
Finish· 26.22 mi
2:50:22
Rank: #1834 (-88)
25.2M → Finish
7:09 | 7:01/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:22:55
Pace6:19 /mi
2nd Half
Distance13.11 mi
Time1:27:27
Pace6:40 /mi
📊Positive Split: 5.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:3219:596:2619:59
6:26
-
10K
6.21 mi10:40:1039:376:2319:38
6:19
-0:07
15K
9.32 mi10:59:3459:016:2019:24
6:15
-0:04
20K
12.43 mi11:19:101:18:376:2019:36
6:19
+0:04
Half
13.11 mi11:23:281:22:556:194:18
6:18
-0:01
25K
15.53 mi11:38:451:38:126:1915:17
6:18
0:00
30K
18.64 mi11:59:041:58:316:2120:19
6:32
+0:14
20M
20.00 mi12:07:592:07:266:228:55
6:34
+0:02
21M
21.00 mi12:15:082:14:356:257:09
7:09
+0:35
35K
21.75 mi12:19:542:19:216:244:46
6:22
-0:47
23M
23.00 mi12:28:252:27:526:268:31
6:48
+0:26
24M
24.00 mi12:35:142:34:416:276:49
6:49
+0:01
40K
24.85 mi12:41:072:40:346:285:53
6:53
+0:04
25.2M
25.20 mi12:43:462:43:136:292:39
7:41
+0:48
Finish
26.22 mi12:50:552:50:226:307:09
7:01
-0:40

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

6:15 /mi

Average Pace

6:30 /mi

Slowest Pace

7:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:18:13

46% of race

Time at Steady Pace

53:59

32% of race

Time at Slower Pace

38:10

22% of race

Average Pace: 6:30 /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 mi10:20:3219:596:2619:59
6:26
#1944
10K
6.21 mi10:40:1039:376:2319:38
6:19
#1876
15K
9.32 mi10:59:3459:016:2019:24
6:15
#1716
20K
12.43 mi11:19:101:18:376:2019:36
6:19
#1641
Half
13.11 mi11:23:281:22:556:194:18
6:18
#1649
25K
15.53 mi11:38:451:38:126:1915:17
6:18
#1573
30K
18.64 mi11:59:041:58:316:2120:19
6:32
#1584
20M
20.00 mi12:07:592:07:266:228:55
6:34
#1568
21M
21.00 mi12:15:082:14:356:257:09
7:09
#1604
35K
21.75 mi12:19:542:19:216:244:46
6:22
#1602
23M
23.00 mi12:28:252:27:526:268:31
6:48
#1636
24M
24.00 mi12:35:142:34:416:276:49
6:49
#1694
40K
24.85 mi12:41:072:40:346:285:53
6:53
#1712
25.2M
25.20 mi12:43:462:43:136:292:39
7:41
#1746
Finish
26.22 mi12:50:552:50:226:307:09
7:01
#1834
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi1944185518551409(Top 5%)1342(Top 9%)1342(Top 60%)
10K6.21 mi3.10 mi1876+681796+591796+591841(Top 7%)1762(Top 12%)1762(Top 79%)
15K9.32 mi3.11 mi1716+1601639+1571639+1571409(Top 5%)1342(Top 9%)1342(Top 60%)
20K12.43 mi3.11 mi1641+751570+691570+691421(Top 5%)1358(Top 9%)1358(Top 61%)
Half13.11 mi0.68 mi1649-81578-81578-81835(Top 7%)1760(Top 12%)1760(Top 79%)
25K15.53 mi2.42 mi1573+761505+731505+731338(Top 5%)1278(Top 8%)1278(Top 57%)
30K18.64 mi3.11 mi1584-111515-101515-101716(Top 6%)1643(Top 11%)1643(Top 73%)
20M20.00 mi1.36 mi1568+161498+171498+171688(Top 6%)1611(Top 11%)1611(Top 72%)
21M21.00 mi1.00 mi1604-361533-351533-352813(Top 11%)2638(Top 17%)2638(Top 118%)
35K21.75 mi0.75 mi1602+21531+21531+21845(Top 7%)1751(Top 12%)1751(Top 78%)
23M23.00 mi1.25 mi1636-341565-341565-342645(Top 10%)2478(Top 16%)2478(Top 111%)
24M24.00 mi1.00 mi1694-581621-561621-563704(Top 14%)3390(Top 22%)3390(Top 151%)
40K24.85 mi0.85 mi1712-181637-161637-163182(Top 12%)2912(Top 19%)2912(Top 130%)
25.2M25.20 mi0.35 mi1746-341669-321669-324691(Top 18%)4044(Top 27%)4044(Top 180%)
Finish26.22 mi1.02 mi1834-881752-831752-835265(Top 20%)4445(Top 29%)4445(Top 198%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21stories
+97ft-345ft

Overall

1409

Males

1342

M40-44

1342

5K→10K

3.1 - 6.2 mi

Top 7%
×5stories
+79ft-138ft

Overall

1841

Males

1762

M40-44

1762

10K→15K

6.2 - 9.3 mi

Top 5%
×3stories
+67ft-78ft

Overall

1409

Males

1342

M40-44

1342

15K→20K

9.3 - 12.4 mi

Top 5%
×5stories
+106ft-86ft

Overall

1421

Males

1358

M40-44

1358

20K→Half

12.4 - 13.1 mi

Top 7%
×2stories
+19ft-37ft

Overall

1835

Males

1760

M40-44

1760

Half→25K

13.1 - 15.5 mi

Top 5%
×4stories
+66ft-88ft

Overall

1338

Males

1278

M40-44

1278

25K→30K

15.5 - 18.6 mi

Top 6%
×9stories
+181ft-148ft

Overall

1716

Males

1643

M40-44

1643

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1688

Males

1611

M40-44

1611

20M→21M

20.0 - 21.0 mi

Top 11%
×8stories
+106ft-24ft

Overall

2813

Males

2638

M40-44

2638

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

1845

Males

1751

M40-44

1751

35K→23M

21.8 - 23.0 mi

Top 10%
×5stories
+23ft-63ft

Overall

2645

Males

2478

M40-44

2478

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

3704

Males

3390

M40-44

3390

24M→40K

24.0 - 24.9 mi

Top 12%
×1story
+6ft-20ft

Overall

3182

Males

2912

M40-44

2912

40K→25.2M

24.9 - 25.2 mi

Top 18%
×1story
+13ft-16ft

Overall

4691

Males

4044

M40-44

4044

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2stories
+22ft-21ft

Overall

5265

Males

4445

M40-44

4445

Passing Analysis

Category:
Athletes Passed
667
Passed By
557
Net Change
+110
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1944
5K → 10K13769+68#1944#1876
10K → 15K17010+160#1876#1716
15K → 20K9520+75#1716#1641
20K → Half816-8#1641#1649
Half → 25K848+76#1649#1573
25K → 30K5162-11#1573#1584
30K → 20M3418+16#1584#1568
20M → 21M1349-36#1568#1604
21M → 35K1412+2#1604#1602
35K → 23M1650-34#1602#1636
23M → 24M866-58#1636#1694
24M → 40K2341-18#1694#1712
40K → 25.2M236-34#1712#1746
25.2M → Finish12100-88#1746#1834
TOTALS667557+110
📊

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