Boston Marathon logo
BOSTON MARATHON 2023

Christopher Mehaffey

Bib: 5909•M

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 20%
Gender (Male)
#0 / 15176
Top 32%
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
21:21
Rank: #5327
Start → 5K
21:21 | 6:52/mi
10K· 6.21 mi
42:41
Rank: #5581 (-254)
5K → 10K
21:20 | 6:52/mi
15K· 9.32 mi
1:03:49
Rank: #5444 (+137)
10K → 15K
21:08 | 6:48/mi
20K· 12.43 mi
1:25:12
Rank: #5387 (+57)
15K → 20K
21:23 | 6:53/mi
Half· 13.11 mi
1:29:53
Rank: #5402 (-15)
20K → Half
4:41 | 6:52/mi
25K· 15.53 mi
1:46:59
Rank: #5488 (-86)
Half → 25K
17:06 | 7:03/mi
30K· 18.64 mi
2:09:28
Rank: #5495 (-7)
25K → 30K
22:29 | 7:14/mi
20M
2:19:36
Rank: #5538 (-43)
30K → 20M
10:08 | 7:27/mi
21M
2:27:02
Rank: #5427 (+111)
20M → 21M
7:26 | 7:26/mi
35K· 21.75 mi
2:32:29
Rank: #5456 (-29)
21M → 35K
5:27 | 7:17/mi
23M
2:41:52
Rank: #5449 (+7)
35K → 23M
9:23 | 7:30/mi
24M
2:48:57
Rank: #5385 (+64)
23M → 24M
7:05 | 7:05/mi
40K· 24.85 mi
2:55:23
Rank: #5385
24M → 40K
6:26 | 7:31/mi
25.2M
2:58:06
Rank: #5360 (+25)
40K → 25.2M
2:43 | 7:53/mi
Finish· 26.22 mi
3:05:30
Rank: #5359 (+1)
25.2M → Finish
7:24 | 7:16/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
Time1:29:53
Pace6:51 /mi
2nd Half
Distance13.11 mi
Time1:35:37
Pace7:18 /mi
📊Positive Split: 6.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:5421:216:5221:21
6:52
-
10K
6.21 mi10:45:1442:416:5221:20
6:52
0:00
15K
9.32 mi11:06:221:03:496:5121:08
6:48
-0:04
20K
12.43 mi11:27:451:25:126:5121:23
6:53
+0:05
Half
13.11 mi11:32:261:29:536:514:41
6:52
-0:01
25K
15.53 mi11:49:321:46:596:5317:06
7:03
+0:11
30K
18.64 mi12:12:012:09:286:5722:29
7:14
+0:11
20M
20.00 mi12:22:092:19:366:5910:08
7:27
+0:13
21M
21.00 mi12:29:352:27:027:007:26
7:26
-0:01
35K
21.75 mi12:35:022:32:297:015:27
7:17
-0:09
23M
23.00 mi12:44:252:41:527:029:23
7:30
+0:13
24M
24.00 mi12:51:302:48:577:027:05
7:05
-0:25
40K
24.85 mi12:57:562:55:237:036:26
7:31
+0:26
25.2M
25.20 mi13:00:392:58:067:042:43
7:53
+0:22
Finish
26.22 mi13:08:033:05:307:057:24
7:16
-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

6:48 /mi

Average Pace

7:05 /mi

Slowest Pace

7:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:46:58

90% of race

Time at Steady Pace

18:32

10% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:04 /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 mi10:23:5421:216:5221:21
6:52
#5327
10K
6.21 mi10:45:1442:416:5221:20
6:52
#5581
15K
9.32 mi11:06:221:03:496:5121:08
6:48
#5444
20K
12.43 mi11:27:451:25:126:5121:23
6:53
#5387
Half
13.11 mi11:32:261:29:536:514:41
6:52
#5402
25K
15.53 mi11:49:321:46:596:5317:06
7:03
#5488
30K
18.64 mi12:12:012:09:286:5722:29
7:14
#5495
20M
20.00 mi12:22:092:19:366:5910:08
7:27
#5538
21M
21.00 mi12:29:352:27:027:007:26
7:26
#5427
35K
21.75 mi12:35:022:32:297:015:27
7:17
#5456
23M
23.00 mi12:44:252:41:527:029:23
7:30
#5449
24M
24.00 mi12:51:302:48:577:027:05
7:05
#5385
40K
24.85 mi12:57:562:55:237:036:26
7:31
#5385
25.2M
25.20 mi13:00:392:58:067:042:43
7:53
#5360
Finish
26.22 mi13:08:033:05:307:057:24
7:16
#5359
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5327492549255149(Top 19%)4766(Top 31%)4766(Top 90%)
10K6.21 mi3.10 mi5581-2545142-2175142-2175878(Top 22%)5364(Top 35%)5364(Top 101%)
15K9.32 mi3.11 mi5444+1375031+1115031+1115149(Top 19%)4766(Top 31%)4766(Top 90%)
20K12.43 mi3.11 mi5387+574983+484983+485206(Top 20%)4810(Top 32%)4810(Top 91%)
Half13.11 mi0.68 mi5402-154993-104993-105747(Top 22%)5279(Top 35%)5279(Top 100%)
25K15.53 mi2.42 mi5488-865065-725065-725851(Top 22%)5330(Top 35%)5330(Top 101%)
30K18.64 mi3.11 mi5495-75061+45061+45682(Top 21%)5133(Top 34%)5133(Top 97%)
20M20.00 mi1.36 mi5538-435088-275088-276476(Top 24%)5626(Top 37%)5626(Top 106%)
21M21.00 mi1.00 mi5427+1114990+984990+984292(Top 16%)3932(Top 26%)3932(Top 74%)
35K21.75 mi0.75 mi5456-295005-155005-156981(Top 26%)5866(Top 39%)5866(Top 111%)
23M23.00 mi1.25 mi5449+74992+134992+136364(Top 24%)5414(Top 36%)5414(Top 102%)
24M24.00 mi1.00 mi5385+644931+614931+615096(Top 19%)4496(Top 30%)4496(Top 85%)
40K24.85 mi0.85 mi53854916+154916+156825(Top 26%)5523(Top 36%)5523(Top 105%)
25.2M25.20 mi0.35 mi5360+254893+234893+235745(Top 22%)4765(Top 31%)4765(Top 90%)
Finish26.22 mi1.02 mi5359+14891+24891+26802(Top 26%)5437(Top 36%)5437(Top 103%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21stories
+97ft-345ft

Overall

5149

Males

4766

M18-39

4766

5K→10K

3.1 - 6.2 mi

Top 22%
×5stories
+79ft-138ft

Overall

5878

Males

5364

M18-39

5364

10K→15K

6.2 - 9.3 mi

Top 19%
×3stories
+67ft-78ft

Overall

5149

Males

4766

M18-39

4766

15K→20K

9.3 - 12.4 mi

Top 20%
×5stories
+106ft-86ft

Overall

5206

Males

4810

M18-39

4810

20K→Half

12.4 - 13.1 mi

Top 22%
×2stories
+19ft-37ft

Overall

5747

Males

5279

M18-39

5279

Half→25K

13.1 - 15.5 mi

Top 22%
×4stories
+66ft-88ft

Overall

5851

Males

5330

M18-39

5330

25K→30K

15.5 - 18.6 mi

Top 21%
×9stories
+181ft-148ft

Overall

5682

Males

5133

M18-39

5133

30K→20M

18.6 - 20.0 mi

Top 24%
×5stories
+64ft-50ft

Overall

6476

Males

5626

M18-39

5626

20M→21M

20.0 - 21.0 mi

Top 16%
×8stories
+106ft-24ft

Overall

4292

Males

3932

M18-39

3932

21M→35K

21.0 - 21.8 mi

Top 26%
×7stories
+17ft-86ft

Overall

6981

Males

5866

M18-39

5866

35K→23M

21.8 - 23.0 mi

Top 24%
×5stories
+23ft-63ft

Overall

6364

Males

5414

M18-39

5414

23M→24M

23.0 - 24.0 mi

Top 19%
×6stories
+12ft-82ft

Overall

5096

Males

4496

M18-39

4496

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

6825

Males

5523

M18-39

5523

40K→25.2M

24.9 - 25.2 mi

Top 22%
×1story
+13ft-16ft

Overall

5745

Males

4765

M18-39

4765

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×2stories
+22ft-21ft

Overall

6802

Males

5437

M18-39

5437

Passing Analysis

Category:
Athletes Passed
1102
Passed By
1134
Net Change
-32
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5327
5K → 10K109363-254#5327#5581
10K → 15K19457+137#5581#5444
15K → 20K12669+57#5444#5387
20K → Half1530-15#5387#5402
Half → 25K65151-86#5402#5488
25K → 30K115122-7#5488#5495
30K → 20M4083-43#5495#5538
20M → 21M12514+111#5538#5427
21M → 35K2352-29#5427#5456
35K → 23M7568+7#5456#5449
23M → 24M8521+64#5449#5385
24M → 40K49490#5385#5385
40K → 25.2M3510+25#5385#5360
25.2M → Finish4645+1#5360#5359
TOTALS11021134-32
📊

Passing Visuals

Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

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