Boston Marathon logo
BOSTON MARATHON 2023

Bennett Coffman

Bib: 4584•M

UT

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 17%
Gender (Male)
#0 / 15176
Top 28%
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
21:37
Rank: #5969
Start → 5K
21:37 | 6:57/mi
10K· 6.21 mi
42:55
Rank: #5864 (+105)
5K → 10K
21:18 | 6:51/mi
15K· 9.32 mi
1:04:06
Rank: #5685 (+179)
10K → 15K
21:11 | 6:49/mi
20K· 12.43 mi
1:25:22
Rank: #5473 (+212)
15K → 20K
21:16 | 6:51/mi
Half· 13.11 mi
1:29:54
Rank: #5409 (+64)
20K → Half
4:32 | 6:39/mi
25K· 15.53 mi
1:46:14
Rank: #5082 (+327)
Half → 25K
16:20 | 6:44/mi
30K· 18.64 mi
2:08:02
Rank: #4912 (+170)
25K → 30K
21:48 | 7:01/mi
20M
2:17:53
Rank: #4946 (-34)
30K → 20M
9:51 | 7:15/mi
21M
2:25:23
Rank: #4905 (+41)
20M → 21M
7:30 | 7:30/mi
35K· 21.75 mi
2:30:32
Rank: #4883 (+22)
21M → 35K
5:09 | 6:53/mi
23M
2:39:17
Rank: #4753 (+130)
35K → 23M
8:45 | 6:59/mi
24M
2:46:12
Rank: #4705 (+48)
23M → 24M
6:55 | 6:55/mi
40K· 24.85 mi
2:52:17
Rank: #4670 (+35)
24M → 40K
6:05 | 7:07/mi
25.2M
2:55:02
Rank: #4672 (-2)
40K → 25.2M
2:45 | 7:58/mi
Finish· 26.22 mi
3:02:06
Rank: #4632 (+40)
25.2M → Finish
7:04 | 6:56/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:54
Pace6:51 /mi
2nd Half
Distance13.11 mi
Time1:32:12
Pace7:02 /mi
📊Positive Split: 2.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:5921:376:5721:37
6:57
-
10K
6.21 mi10:45:1742:556:5421:18
6:51
-0:06
15K
9.32 mi11:06:281:04:066:5321:11
6:49
-0:02
20K
12.43 mi11:27:441:25:226:5221:16
6:51
+0:02
Half
13.11 mi11:32:161:29:546:514:32
6:39
-0:12
25K
15.53 mi11:48:361:46:146:5016:20
6:44
+0:05
30K
18.64 mi12:10:242:08:026:5221:48
7:01
+0:17
20M
20.00 mi12:20:152:17:536:549:51
7:15
+0:14
21M
21.00 mi12:27:452:25:236:557:30
7:30
+0:15
35K
21.75 mi12:32:542:30:326:555:09
6:53
-0:37
23M
23.00 mi12:41:392:39:176:568:45
6:59
+0:06
24M
24.00 mi12:48:342:46:126:566:55
6:55
-0:04
40K
24.85 mi12:54:392:52:176:566:05
7:07
+0:12
25.2M
25.20 mi12:57:242:55:026:572:45
7:58
+0:51
Finish
26.22 mi13:04:283:02:066:577:04
6:56
-1:02

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

6:57 /mi

Slowest Pace

7:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:51:51

94% of race

Time at Steady Pace

7:30

4% of race

Time at Slower Pace

2:45

2% of race

Average Pace: 6:57 /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 mi10:23:5921:376:5721:37
6:57
#5969
10K
6.21 mi10:45:1742:556:5421:18
6:51
#5864
15K
9.32 mi11:06:281:04:066:5321:11
6:49
#5685
20K
12.43 mi11:27:441:25:226:5221:16
6:51
#5473
Half
13.11 mi11:32:161:29:546:514:32
6:39
#5409
25K
15.53 mi11:48:361:46:146:5016:20
6:44
#5082
30K
18.64 mi12:10:242:08:026:5221:48
7:01
#4912
20M
20.00 mi12:20:152:17:536:549:51
7:15
#4946
21M
21.00 mi12:27:452:25:236:557:30
7:30
#4905
35K
21.75 mi12:32:542:30:326:555:09
6:53
#4883
23M
23.00 mi12:41:392:39:176:568:45
6:59
#4753
24M
24.00 mi12:48:342:46:126:566:55
6:55
#4705
40K
24.85 mi12:54:392:52:176:566:05
7:07
#4670
25.2M
25.20 mi12:57:242:55:026:572:45
7:58
#4672
Finish
26.22 mi13:04:283:02:066:577:04
6:56
#4632
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5969546154615283(Top 20%)4880(Top 32%)4880(Top 92%)
10K6.21 mi3.10 mi5864+1055374+875374+875792(Top 22%)5293(Top 35%)5293(Top 100%)
15K9.32 mi3.11 mi5685+1795224+1505224+1505283(Top 20%)4880(Top 32%)4880(Top 92%)
20K12.43 mi3.11 mi5473+2125050+1745050+1744859(Top 18%)4511(Top 30%)4511(Top 85%)
Half13.11 mi0.68 mi5409+645000+505000+503850(Top 14%)3634(Top 24%)3634(Top 69%)
25K15.53 mi2.42 mi5082+3274717+2834717+2833663(Top 14%)3452(Top 23%)3452(Top 65%)
30K18.64 mi3.11 mi4912+1704570+1474570+1474456(Top 17%)4133(Top 27%)4133(Top 78%)
20M20.00 mi1.36 mi4946-344590-204590-205340(Top 20%)4802(Top 32%)4802(Top 91%)
21M21.00 mi1.00 mi4905+414552+384552+384565(Top 17%)4152(Top 27%)4152(Top 79%)
35K21.75 mi0.75 mi4883+224532+204532+204670(Top 18%)4235(Top 28%)4235(Top 80%)
23M23.00 mi1.25 mi4753+1304415+1174415+1173743(Top 14%)3457(Top 23%)3457(Top 65%)
24M24.00 mi1.00 mi4705+484373+424373+424261(Top 16%)3873(Top 26%)3873(Top 73%)
40K24.85 mi0.85 mi4670+354334+394334+394439(Top 17%)3940(Top 26%)3940(Top 75%)
25.2M25.20 mi0.35 mi4672-24333+14333+16245(Top 23%)5081(Top 33%)5081(Top 96%)
Finish26.22 mi1.02 mi4632+404291+424291+424810(Top 18%)4133(Top 27%)4133(Top 78%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21stories
+97ft-345ft

Overall

5283

Males

4880

M18-39

4880

5K→10K

3.1 - 6.2 mi

Top 22%
×5stories
+79ft-138ft

Overall

5792

Males

5293

M18-39

5293

10K→15K

6.2 - 9.3 mi

Top 20%
×3stories
+67ft-78ft

Overall

5283

Males

4880

M18-39

4880

15K→20K

9.3 - 12.4 mi

Top 18%
×5stories
+106ft-86ft

Overall

4859

Males

4511

M18-39

4511

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+19ft-37ft

Overall

3850

Males

3634

M18-39

3634

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3663

Males

3452

M18-39

3452

25K→30K

15.5 - 18.6 mi

Top 17%
×9stories
+181ft-148ft

Overall

4456

Males

4133

M18-39

4133

30K→20M

18.6 - 20.0 mi

Top 20%
×5stories
+64ft-50ft

Overall

5340

Males

4802

M18-39

4802

20M→21M

20.0 - 21.0 mi

Top 17%
×8stories
+106ft-24ft

Overall

4565

Males

4152

M18-39

4152

21M→35K

21.0 - 21.8 mi

Top 18%
×7stories
+17ft-86ft

Overall

4670

Males

4235

M18-39

4235

35K→23M

21.8 - 23.0 mi

Top 14%
×5stories
+23ft-63ft

Overall

3743

Males

3457

M18-39

3457

23M→24M

23.0 - 24.0 mi

Top 16%
×6stories
+12ft-82ft

Overall

4261

Males

3873

M18-39

3873

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4439

Males

3940

M18-39

3940

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6245

Males

5081

M18-39

5081

25.2M→Finish

25.2 - 26.2 mi

Top 18%
×2stories
+22ft-21ft

Overall

4810

Males

4133

M18-39

4133

Passing Analysis

Category:
Athletes Passed
1876
Passed By
539
Net Change
+1337
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5969
5K → 10K250145+105#5969#5864
10K → 15K22445+179#5864#5685
15K → 20K23422+212#5685#5473
20K → Half651+64#5473#5409
Half → 25K3358+327#5409#5082
25K → 30K23060+170#5082#4912
30K → 20M5892-34#4912#4946
20M → 21M7635+41#4946#4905
21M → 35K4927+22#4905#4883
35K → 23M14212+130#4883#4753
23M → 24M7325+48#4753#4705
24M → 40K5722+35#4705#4670
40K → 25.2M1517-2#4670#4672
25.2M → Finish6828+40#4672#4632
TOTALS1876539+1337
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing