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BOSTON MARATHON 2023

Nicholas Collier

Bib: 4423•M

CO

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 14%
Gender (Male)
#0 / 15176
Top 23%
Masters (Masters Men)
#0 / 9891
Top 10%
Division (M40-44)
#0 / 2241
Top 26%
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
6:43/mi
20:53
↑ 97↓ 3451.5%
10K· 6.21 mi
6:40/mi
41:35
↑ 79↓ 1380.4%
15K· 9.32 mi
6:39/mi
1:02:16
↑ 67↓ 78
20K· 12.43 mi
6:47/mi
1:23:20
↑ 106↓ 860.1%
Half· 13.11 mi
6:45/mi
1:27:56
↑ 19↓ 370.5%
25K· 15.53 mi
6:45/mi
1:44:18
↑ 66↓ 880.2%
30K· 18.64 mi
6:57/mi
2:05:55
↑ 181↓ 1480.2%
20M
6:58/mi
2:15:23
↑ 64↓ 500.2%
21M
7:25/mi
2:22:48
↑ 106↓ 241.6%
35K· 21.75 mi
6:49/mi
2:27:54
↑ 17↓ 861.7%
23M
6:56/mi
2:36:35
↑ 23↓ 630.6%
24M
6:44/mi
2:43:19
↓ 821.3%
40K· 24.85 mi
6:55/mi
2:49:14
↓ 200.3%
25.2M
7:29/mi
2:51:49
↑ 13↓ 160.2%
Finish· 26.22 mi
6:46/mi
2:58:43
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:56
Pace6:42 /mi
2nd Half
Distance13.11 mi
Time1:30:47
Pace6:56 /mi
📊Positive Split: 3.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:0820:536:4320:53
6:43
-
10K
6.21 mi10:43:5041:356:4220:42
6:40
-0:03
15K
9.32 mi11:04:311:02:166:4120:41
6:39
-0:01
20K
12.43 mi11:25:351:23:206:4221:04
6:47
+0:08
Half
13.11 mi11:30:111:27:566:424:36
6:45
-0:02
25K
15.53 mi11:46:331:44:186:4316:22
6:45
0:00
30K
18.64 mi12:08:102:05:556:4521:37
6:57
+0:12
20M
20.00 mi12:17:382:15:236:469:28
6:58
+0:01
21M
21.00 mi12:25:032:22:486:487:25
7:25
+0:27
35K
21.75 mi12:30:092:27:546:485:06
6:49
-0:36
23M
23.00 mi12:38:502:36:356:488:41
6:56
+0:07
24M
24.00 mi12:45:342:43:196:486:44
6:44
-0:12
40K
24.85 mi12:51:292:49:146:495:55
6:55
+0:11
25.2M
25.20 mi12:54:042:51:496:492:35
7:29
+0:34
Finish
26.22 mi13:00:582:58:436:496:54
6:46
-0:43

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

6:39 /mi

Average Pace

6:49 /mi

Slowest Pace

7:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:48:43

94% of race

Time at Steady Pace

10:00

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:49 /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 mi10:23:0820:536:4320:53
6:43
#3863
10K
6.21 mi10:43:5041:356:4220:42
6:40
#3892
15K
9.32 mi11:04:311:02:166:4120:41
6:39
#3820
20K
12.43 mi11:25:351:23:206:4221:04
6:47
#3919
Half
13.11 mi11:30:111:27:566:424:36
6:45
#3957
25K
15.53 mi11:46:331:44:186:4316:22
6:45
#3898
30K
18.64 mi12:08:102:05:556:4521:37
6:57
#3897
20M
20.00 mi12:17:382:15:236:469:28
6:58
#3863
21M
21.00 mi12:25:032:22:486:487:25
7:25
#3863
35K
21.75 mi12:30:092:27:546:485:06
6:49
#3884
23M
23.00 mi12:38:502:36:356:488:41
6:56
#3818
24M
24.00 mi12:45:342:43:196:486:44
6:44
#3768
40K
24.85 mi12:51:292:49:146:495:55
6:55
#3735
25.2M
25.20 mi12:54:042:51:496:492:35
7:29
#3740
Finish
26.22 mi13:00:582:58:436:496:54
6:46
#3749
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi3863362936293744(Top 14%)3528(Top 23%)3528(Top 157%)
10K6.21 mi3.10 mi3892-293664-353664-353984(Top 15%)3750(Top 25%)3750(Top 167%)
15K9.32 mi3.11 mi3820+723604+603604+603744(Top 14%)3528(Top 23%)3528(Top 157%)
20K12.43 mi3.11 mi3919-993689-853689-854246(Top 16%)3974(Top 26%)3974(Top 177%)
Half13.11 mi0.68 mi3957-383722-333722-334671(Top 18%)4333(Top 29%)4333(Top 193%)
25K15.53 mi2.42 mi3898+593672+503672+503748(Top 14%)3528(Top 23%)3528(Top 157%)
30K18.64 mi3.11 mi3897+13674-23674-24059(Top 15%)3789(Top 25%)3789(Top 169%)
20M20.00 mi1.36 mi3863+343638+363638+363810(Top 14%)3546(Top 23%)3546(Top 158%)
21M21.00 mi1.00 mi3863363836384181(Top 16%)3833(Top 25%)3833(Top 171%)
35K21.75 mi0.75 mi3884-213652-143652-144264(Top 16%)3899(Top 26%)3899(Top 174%)
23M23.00 mi1.25 mi3818+663594+583594+583434(Top 13%)3182(Top 21%)3182(Top 142%)
24M24.00 mi1.00 mi3768+503544+503544+503289(Top 12%)3044(Top 20%)3044(Top 136%)
40K24.85 mi0.85 mi3735+333511+333511+333427(Top 13%)3128(Top 21%)3128(Top 140%)
25.2M25.20 mi0.35 mi3740-53515-43515-43818(Top 14%)3408(Top 22%)3408(Top 152%)
Finish26.22 mi1.02 mi3749-93521-63521-63889(Top 15%)3445(Top 23%)3445(Top 154%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21story building
+97ft-345ft

Overall

3744

Males

3528

M40-44

3528

5K→10K

3.1 - 6.2 mi

Top 15%
×5story building
+79ft-138ft

Overall

3984

Males

3750

M40-44

3750

10K→15K

6.2 - 9.3 mi

Top 14%
×3story building
+67ft-78ft

Overall

3744

Males

3528

M40-44

3528

15K→20K

9.3 - 12.4 mi

Top 16%
×5story building
+106ft-86ft

Overall

4246

Males

3974

M40-44

3974

20K→Half

12.4 - 13.1 mi

Top 18%
×2story building
+19ft-37ft

Overall

4671

Males

4333

M40-44

4333

Half→25K

13.1 - 15.5 mi

Top 14%
×4story building
+66ft-88ft

Overall

3748

Males

3528

M40-44

3528

25K→30K

15.5 - 18.6 mi

Top 15%
×9story building
+181ft-148ft

Overall

4059

Males

3789

M40-44

3789

30K→20M

18.6 - 20.0 mi

Top 14%
×5story building
+64ft-50ft

Overall

3810

Males

3546

M40-44

3546

20M→21M

20.0 - 21.0 mi

Top 16%
×8story building
+106ft-24ft

Overall

4181

Males

3833

M40-44

3833

21M→35K

21.0 - 21.8 mi

Top 16%
×7story building
+17ft-86ft

Overall

4264

Males

3899

M40-44

3899

35K→23M

21.8 - 23.0 mi

Top 13%
×5story building
+23ft-63ft

Overall

3434

Males

3182

M40-44

3182

23M→24M

23.0 - 24.0 mi

Top 12%
×6story building
+12ft-82ft

Overall

3289

Males

3044

M40-44

3044

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3427

Males

3128

M40-44

3128

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3818

Males

3408

M40-44

3408

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2story building
+22ft-21ft

Overall

3889

Males

3445

M40-44

3445

Passing Analysis

Category:
Athletes Passed
1119
Passed By
1005
Net Change
+114
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3863
5K → 10K201230-29#3863#3892
10K → 15K15684+72#3892#3820
15K → 20K77176-99#3820#3919
20K → Half846-38#3919#3957
Half → 25K10748+59#3957#3898
25K → 30K109108+1#3898#3897
30K → 20M8450+34#3897#3863
20M → 21M67670#3863#3863
21M → 35K2445-21#3863#3884
35K → 23M8620+66#3884#3818
23M → 24M6919+50#3818#3768
24M → 40K6532+33#3768#3735
40K → 25.2M1722-5#3735#3740
25.2M → Finish4958-9#3740#3749
TOTALS11191005+114
📊

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