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BOSTON MARATHON 2023

James Hazeldine

Bib: 31776•M

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:01
Rank: #14372
Start → 5K
25:01 | 8:03/mi
10K· 6.21 mi
49:53
Rank: #14571 (-199)
5K → 10K
24:52 | 8:00/mi
15K· 9.32 mi
1:14:56
Rank: #14652 (-81)
10K → 15K
25:03 | 8:04/mi
20K· 12.43 mi
1:40:15
Rank: #14619 (+33)
15K → 20K
25:19 | 8:09/mi
Half· 13.11 mi
1:45:57
Rank: #14744 (-125)
20K → Half
5:42 | 8:21/mi
25K· 15.53 mi
2:07:03
Rank: #15200 (-456)
Half → 25K
21:06 | 8:42/mi
30K· 18.64 mi
2:34:36
Rank: #15428 (-228)
25K → 30K
27:33 | 8:52/mi
20M
2:46:36
Rank: #15446 (-18)
30K → 20M
12:00 | 8:50/mi
21M
2:56:13
Rank: #15463 (-17)
20M → 21M
9:37 | 9:37/mi
35K· 21.75 mi
3:02:35
Rank: #15464 (-1)
21M → 35K
6:22 | 8:31/mi
23M
3:13:59
Rank: #15526 (-62)
35K → 23M
11:24 | 9:06/mi
24M
3:22:49
Rank: #15552 (-26)
23M → 24M
8:50 | 8:50/mi
40K· 24.85 mi
3:30:23
Rank: #15542 (+10)
24M → 40K
7:34 | 8:51/mi
25.2M
3:33:38
Rank: #15540 (+2)
40K → 25.2M
3:15 | 9:25/mi
Finish· 26.22 mi
3:42:19
Rank: #15522 (+18)
25.2M → Finish
8:41 | 8:31/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:57
Pace8:05 /mi
2nd Half
Distance13.11 mi
Time1:56:22
Pace8:53 /mi
📊Positive Split: 9.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:42:1725:018:0325:01
8:03
-
10K
6.21 mi12:07:0949:538:0224:52
8:00
-0:03
15K
9.32 mi12:32:121:14:568:0225:03
8:04
+0:04
20K
12.43 mi12:57:311:40:158:0425:19
8:09
+0:05
Half
13.11 mi13:03:131:45:578:055:42
8:21
+0:12
25K
15.53 mi13:24:192:07:038:1121:06
8:42
+0:21
30K
18.64 mi13:51:522:34:368:1827:33
8:52
+0:10
20M
20.00 mi14:03:522:46:368:2012:00
8:50
-0:02
21M
21.00 mi14:13:292:56:138:239:37
9:37
+0:47
35K
21.75 mi14:19:513:02:358:246:22
8:31
-1:06
23M
23.00 mi14:31:153:13:598:2611:24
9:06
+0:35
24M
24.00 mi14:40:053:22:498:278:50
8:50
-0:16
40K
24.85 mi14:47:393:30:238:287:34
8:51
+0:01
25.2M
25.20 mi14:50:543:33:388:293:15
9:25
+0:34
Finish
26.22 mi14:59:353:42:198:298:41
8:31
-0:54

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

8:00 /mi

Average Pace

8:29 /mi

Slowest Pace

9:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:45:57

48% of race

Time at Steady Pace

1:32:06

41% of race

Time at Slower Pace

24:16

11% of race

Average Pace: 8:29 /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 mi11:42:1725:018:0325:01
8:03
#14372
10K
6.21 mi12:07:0949:538:0224:52
8:00
#14571
15K
9.32 mi12:32:121:14:568:0225:03
8:04
#14652
20K
12.43 mi12:57:311:40:158:0425:19
8:09
#14619
Half
13.11 mi13:03:131:45:578:055:42
8:21
#14744
25K
15.53 mi13:24:192:07:038:1121:06
8:42
#15200
30K
18.64 mi13:51:522:34:368:1827:33
8:52
#15428
20M
20.00 mi14:03:522:46:368:2012:00
8:50
#15446
21M
21.00 mi14:13:292:56:138:239:37
9:37
#15463
35K
21.75 mi14:19:513:02:358:246:22
8:31
#15464
23M
23.00 mi14:31:153:13:598:2611:24
9:06
#15526
24M
24.00 mi14:40:053:22:498:278:50
8:50
#15552
40K
24.85 mi14:47:393:30:238:287:34
8:51
#15542
25.2M
25.20 mi14:50:543:33:388:293:15
9:25
#15540
Finish
26.22 mi14:59:353:42:198:298:41
8:31
#15522
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi14372101041010414900(Top 56%)10266(Top 68%)10266(Top 194%)
10K6.21 mi3.10 mi14571-19910164-6010164-6014825(Top 56%)10245(Top 68%)10245(Top 194%)
15K9.32 mi3.11 mi14652-8110184-2010184-2014900(Top 56%)10266(Top 68%)10266(Top 194%)
20K12.43 mi3.11 mi14619+3310156+2810156+2814579(Top 55%)10114(Top 67%)10114(Top 191%)
Half13.11 mi0.68 mi14744-12510201-4510201-4516775(Top 63%)10976(Top 72%)10976(Top 208%)
25K15.53 mi2.42 mi15200-45610339-13810339-13817375(Top 65%)11137(Top 73%)11137(Top 211%)
30K18.64 mi3.11 mi15428-22810377-3810377-3816460(Top 62%)10676(Top 70%)10676(Top 202%)
20M20.00 mi1.36 mi15446-1810368+910368+915585(Top 59%)10236(Top 67%)10236(Top 194%)
21M21.00 mi1.00 mi15463-1710345+2310345+2316474(Top 62%)10551(Top 70%)10551(Top 200%)
35K21.75 mi0.75 mi15464-110336+910336+915360(Top 58%)10013(Top 66%)10013(Top 189%)
23M23.00 mi1.25 mi15526-6210324+1210324+1216549(Top 62%)10478(Top 69%)10478(Top 198%)
24M24.00 mi1.00 mi15552-2610316+810316+816370(Top 61%)10339(Top 68%)10339(Top 196%)
40K24.85 mi0.85 mi15542+1010308+810308+815332(Top 58%)9830(Top 65%)9830(Top 186%)
25.2M25.20 mi0.35 mi15540+210305+310305+314775(Top 55%)9579(Top 63%)9579(Top 181%)
Finish26.22 mi1.02 mi15522+1810283+2210283+2215534(Top 58%)9961(Top 66%)9961(Top 188%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 56%
×21stories
+97ft-345ft

Overall

14900

Males

10266

M18-39

10266

5K→10K

3.1 - 6.2 mi

Top 56%
×5stories
+79ft-138ft

Overall

14825

Males

10245

M18-39

10245

10K→15K

6.2 - 9.3 mi

Top 56%
×3stories
+67ft-78ft

Overall

14900

Males

10266

M18-39

10266

15K→20K

9.3 - 12.4 mi

Top 55%
×5stories
+106ft-86ft

Overall

14579

Males

10114

M18-39

10114

20K→Half

12.4 - 13.1 mi

Top 63%
×2stories
+19ft-37ft

Overall

16775

Males

10976

M18-39

10976

Half→25K

13.1 - 15.5 mi

Top 65%
×4stories
+66ft-88ft

Overall

17375

Males

11137

M18-39

11137

25K→30K

15.5 - 18.6 mi

Top 62%
×9stories
+181ft-148ft

Overall

16460

Males

10676

M18-39

10676

30K→20M

18.6 - 20.0 mi

Top 59%
×5stories
+64ft-50ft

Overall

15585

Males

10236

M18-39

10236

20M→21M

20.0 - 21.0 mi

Top 62%
×8stories
+106ft-24ft

Overall

16474

Males

10551

M18-39

10551

21M→35K

21.0 - 21.8 mi

Top 58%
×7stories
+17ft-86ft

Overall

15360

Males

10013

M18-39

10013

35K→23M

21.8 - 23.0 mi

Top 62%
×5stories
+23ft-63ft

Overall

16549

Males

10478

M18-39

10478

23M→24M

23.0 - 24.0 mi

Top 61%
×6stories
+12ft-82ft

Overall

16370

Males

10339

M18-39

10339

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

15332

Males

9830

M18-39

9830

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

14775

Males

9579

M18-39

9579

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2stories
+22ft-21ft

Overall

15534

Males

9961

M18-39

9961

Passing Analysis

Category:
Athletes Passed
1236
Passed By
2386
Net Change
-1150
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14372
5K → 10K203402-199#14372#14571
10K → 15K164245-81#14571#14652
15K → 20K203170+33#14652#14619
20K → Half3128-125#14619#14744
Half → 25K51507-456#14744#15200
25K → 30K115343-228#15200#15428
30K → 20M7189-18#15428#15446
20M → 21M85102-17#15446#15463
21M → 35K4748-1#15463#15464
35K → 23M76138-62#15464#15526
23M → 24M5278-26#15526#15552
24M → 40K5848+10#15552#15542
40K → 25.2M3129+2#15542#15540
25.2M → Finish7759+18#15540#15522
TOTALS12362386-1150
📊

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