Boston Marathon logo
BOSTON MARATHON 2023

Alex Check

Bib: 4233•M

MN

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 14%
Gender (Male)
#0 / 15176
Top 24%
Division (M18-39)
#0 / 5285
Top 48%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:03
Rank: #4412
Start → 5K
21:03 | 6:47/mi
10K· 6.21 mi
41:48
Rank: #4250 (+162)
5K → 10K
20:45 | 6:41/mi
15K· 9.32 mi
1:02:28
Rank: #4033 (+217)
10K → 15K
20:40 | 6:39/mi
20K· 12.43 mi
1:23:19
Rank: #3911 (+122)
15K → 20K
20:51 | 6:43/mi
Half· 13.11 mi
1:27:51
Rank: #3900 (+11)
20K → Half
4:32 | 6:39/mi
25K· 15.53 mi
1:44:11
Rank: #3843 (+57)
Half → 25K
16:20 | 6:44/mi
30K· 18.64 mi
2:05:23
Rank: #3661 (+182)
25K → 30K
21:12 | 6:49/mi
20M
2:14:42
Rank: #3578 (+83)
30K → 20M
9:19 | 6:51/mi
21M
2:21:57
Rank: #3535 (+43)
20M → 21M
7:15 | 7:15/mi
35K· 21.75 mi
2:26:59
Rank: #3522 (+13)
21M → 35K
5:02 | 6:44/mi
23M
2:35:50
Rank: #3531 (-9)
35K → 23M
8:51 | 7:04/mi
24M
2:42:50
Rank: #3595 (-64)
23M → 24M
7:00 | 7:00/mi
40K· 24.85 mi
2:48:57
Rank: #3624 (-29)
24M → 40K
6:07 | 7:09/mi
25.2M
2:51:39
Rank: #3672 (-48)
40K → 25.2M
2:42 | 7:50/mi
Finish· 26.22 mi
2:58:59
Rank: #3859 (-187)
25.2M → Finish
7:20 | 7:12/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
Time1:27:51
Pace6:42 /mi
2nd Half
Distance13.11 mi
Time1:31:08
Pace6:57 /mi
📊Positive Split: 3.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:2821:036:4721:03
6:47
-
10K
6.21 mi10:44:1341:486:4420:45
6:41
-0:06
15K
9.32 mi11:04:531:02:286:4220:40
6:39
-0:02
20K
12.43 mi11:25:441:23:196:4220:51
6:43
+0:04
Half
13.11 mi11:30:161:27:516:424:32
6:39
-0:04
25K
15.53 mi11:46:361:44:116:4216:20
6:44
+0:05
30K
18.64 mi12:07:482:05:236:4421:12
6:49
+0:05
20M
20.00 mi12:17:072:14:426:449:19
6:51
+0:02
21M
21.00 mi12:24:222:21:576:467:15
7:15
+0:24
35K
21.75 mi12:29:242:26:596:465:02
6:44
-0:31
23M
23.00 mi12:38:152:35:506:478:51
7:04
+0:20
24M
24.00 mi12:45:152:42:506:477:00
7:00
-0:04
40K
24.85 mi12:51:222:48:576:486:07
7:09
+0:09
25.2M
25.20 mi12:54:042:51:396:492:42
7:50
+0:41
Finish
26.22 mi13:01:242:58:596:507:20
7:12
-0:38

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

6:50 /mi

Slowest Pace

7:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:56:17

98% of race

Time at Steady Pace

2:42

2% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:50 /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 mi10:23:2821:036:4721:03
6:47
#4412
10K
6.21 mi10:44:1341:486:4420:45
6:41
#4250
15K
9.32 mi11:04:531:02:286:4220:40
6:39
#4033
20K
12.43 mi11:25:441:23:196:4220:51
6:43
#3911
Half
13.11 mi11:30:161:27:516:424:32
6:39
#3900
25K
15.53 mi11:46:361:44:116:4216:20
6:44
#3843
30K
18.64 mi12:07:482:05:236:4421:12
6:49
#3661
20M
20.00 mi12:17:072:14:426:449:19
6:51
#3578
21M
21.00 mi12:24:222:21:576:467:15
7:15
#3535
35K
21.75 mi12:29:242:26:596:465:02
6:44
#3522
23M
23.00 mi12:38:152:35:506:478:51
7:04
#3531
24M
24.00 mi12:45:152:42:506:477:00
7:00
#3595
40K
24.85 mi12:51:222:48:576:486:07
7:09
#3624
25.2M
25.20 mi12:54:042:51:396:492:42
7:50
#3672
Finish
26.22 mi13:01:242:58:596:507:20
7:12
#3859
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4412412041203702(Top 14%)3490(Top 23%)3490(Top 66%)
10K6.21 mi3.10 mi4250+1623983+1373983+1374146(Top 16%)3890(Top 26%)3890(Top 74%)
15K9.32 mi3.11 mi4033+2173793+1903793+1903702(Top 14%)3490(Top 23%)3490(Top 66%)
20K12.43 mi3.11 mi3911+1223682+1113682+1113665(Top 14%)3469(Top 23%)3469(Top 66%)
Half13.11 mi0.68 mi3900+113675+73675+73810(Top 14%)3594(Top 24%)3594(Top 68%)
25K15.53 mi2.42 mi3843+573628+473628+473651(Top 14%)3440(Top 23%)3440(Top 65%)
30K18.64 mi3.11 mi3661+1823460+1683460+1683149(Top 12%)2969(Top 20%)2969(Top 56%)
20M20.00 mi1.36 mi3578+833385+753385+753175(Top 12%)2981(Top 20%)2981(Top 56%)
21M21.00 mi1.00 mi3535+433348+373348+373366(Top 13%)3136(Top 21%)3136(Top 59%)
35K21.75 mi0.75 mi3522+133336+123336+123724(Top 14%)3441(Top 23%)3441(Top 65%)
23M23.00 mi1.25 mi3531-93335+13335+14126(Top 15%)3782(Top 25%)3782(Top 72%)
24M24.00 mi1.00 mi3595-643392-573392-574653(Top 17%)4167(Top 27%)4167(Top 79%)
40K24.85 mi0.85 mi3624-293415-233415-234617(Top 17%)4068(Top 27%)4068(Top 77%)
25.2M25.20 mi0.35 mi3672-483454-393454-395451(Top 20%)4550(Top 30%)4550(Top 86%)
Finish26.22 mi1.02 mi3859-1873623-1693623-1696351(Top 24%)5159(Top 34%)5159(Top 98%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21stories
+97ft-345ft

Overall

3702

Males

3490

M18-39

3490

5K→10K

3.1 - 6.2 mi

Top 16%
×5stories
+79ft-138ft

Overall

4146

Males

3890

M18-39

3890

10K→15K

6.2 - 9.3 mi

Top 14%
×3stories
+67ft-78ft

Overall

3702

Males

3490

M18-39

3490

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

3665

Males

3469

M18-39

3469

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+19ft-37ft

Overall

3810

Males

3594

M18-39

3594

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3651

Males

3440

M18-39

3440

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3149

Males

2969

M18-39

2969

30K→20M

18.6 - 20.0 mi

Top 12%
×5stories
+64ft-50ft

Overall

3175

Males

2981

M18-39

2981

20M→21M

20.0 - 21.0 mi

Top 13%
×8stories
+106ft-24ft

Overall

3366

Males

3136

M18-39

3136

21M→35K

21.0 - 21.8 mi

Top 14%
×7stories
+17ft-86ft

Overall

3724

Males

3441

M18-39

3441

35K→23M

21.8 - 23.0 mi

Top 15%
×5stories
+23ft-63ft

Overall

4126

Males

3782

M18-39

3782

23M→24M

23.0 - 24.0 mi

Top 17%
×6stories
+12ft-82ft

Overall

4653

Males

4167

M18-39

4167

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4617

Males

4068

M18-39

4068

40K→25.2M

24.9 - 25.2 mi

Top 20%
×1story
+13ft-16ft

Overall

5451

Males

4550

M18-39

4550

25.2M→Finish

25.2 - 26.2 mi

Top 24%
×2stories
+22ft-21ft

Overall

6351

Males

5159

M18-39

5159

Passing Analysis

Category:
Athletes Passed
1435
Passed By
882
Net Change
+553
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4412
5K → 10K295133+162#4412#4250
10K → 15K25740+217#4250#4033
15K → 20K18058+122#4033#3911
20K → Half2514+11#3911#3900
Half → 25K11053+57#3900#3843
25K → 30K21230+182#3843#3661
30K → 20M10017+83#3661#3578
20M → 21M7431+43#3578#3535
21M → 35K4229+13#3535#3522
35K → 23M5867-9#3522#3531
23M → 24M2084-64#3531#3595
24M → 40K3665-29#3595#3624
40K → 25.2M1159-48#3624#3672
25.2M → Finish15202-187#3672#3859
TOTALS1435882+553
📊

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