Boston Marathon logo
BOSTON MARATHON 2023

David Alvarez

Bib: 2900•M

IL

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
20:40
Rank: #3250
Start → 5K
20:40 | 6:39/mi
10K· 6.21 mi
40:59
Rank: #3136 (+114)
5K → 10K
20:19 | 6:32/mi
15K· 9.32 mi
1:02:08
Rank: #3676 (-540)
10K → 15K
21:09 | 6:48/mi
20K· 12.43 mi
1:23:33
Rank: #4100 (-424)
15K → 20K
21:25 | 6:54/mi
Half· 13.11 mi
1:28:09
Rank: #4119 (-19)
20K → Half
4:36 | 6:45/mi
25K· 15.53 mi
1:44:37
Rank: #4095 (+24)
Half → 25K
16:28 | 6:47/mi
30K· 18.64 mi
2:06:26
Rank: #4136 (-41)
25K → 30K
21:49 | 7:01/mi
20M
2:15:47
Rank: #4046 (+90)
30K → 20M
9:21 | 6:53/mi
21M
2:23:11
Rank: #4037 (+9)
20M → 21M
7:24 | 7:24/mi
35K· 21.75 mi
2:28:08
Rank: #3973 (+64)
21M → 35K
4:57 | 6:37/mi
23M
2:36:54
Rank: #3944 (+29)
35K → 23M
8:46 | 7:00/mi
24M
2:43:46
Rank: #3948 (-4)
23M → 24M
6:52 | 6:52/mi
40K· 24.85 mi
2:49:37
Rank: #3883 (+65)
24M → 40K
5:51 | 6:51/mi
25.2M
2:52:12
Rank: #3880 (+3)
40K → 25.2M
2:35 | 7:29/mi
Finish· 26.22 mi
2:58:55
Rank: #3829 (+51)
25.2M → Finish
6:43 | 6:35/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
Time1:28:09
Pace6:43 /mi
2nd Half
Distance13.11 mi
Time1:30:46
Pace6:55 /mi
📊Positive Split: 3.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:0620:406:3920:40
6:39
-
10K
6.21 mi10:42:2540:596:3620:19
6:32
-0:07
15K
9.32 mi11:03:341:02:086:4021:09
6:48
+0:16
20K
12.43 mi11:24:591:23:336:4321:25
6:54
+0:06
Half
13.11 mi11:29:351:28:096:434:36
6:45
-0:09
25K
15.53 mi11:46:031:44:376:4416:28
6:47
+0:02
30K
18.64 mi12:07:522:06:266:4721:49
7:01
+0:14
20M
20.00 mi12:17:132:15:476:479:21
6:53
-0:08
21M
21.00 mi12:24:372:23:116:497:24
7:24
+0:31
35K
21.75 mi12:29:342:28:086:494:57
6:37
-0:47
23M
23.00 mi12:38:202:36:546:498:46
7:00
+0:23
24M
24.00 mi12:45:122:43:466:496:52
6:52
-0:08
40K
24.85 mi12:51:032:49:376:495:51
6:51
-0:01
25.2M
25.20 mi12:53:382:52:126:502:35
7:29
+0:38
Finish
26.22 mi13:00:212:58:556:506:43
6:35
-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

6:32 /mi

Average Pace

6:50 /mi

Slowest Pace

7:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:48:56

94% of race

Time at Steady Pace

9:59

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 mi10:22:0620:406:3920:40
6:39
#3250
10K
6.21 mi10:42:2540:596:3620:19
6:32
#3136
15K
9.32 mi11:03:341:02:086:4021:09
6:48
#3676
20K
12.43 mi11:24:591:23:336:4321:25
6:54
#4100
Half
13.11 mi11:29:351:28:096:434:36
6:45
#4119
25K
15.53 mi11:46:031:44:376:4416:28
6:47
#4095
30K
18.64 mi12:07:522:06:266:4721:49
7:01
#4136
20M
20.00 mi12:17:132:15:476:479:21
6:53
#4046
21M
21.00 mi12:24:372:23:116:497:24
7:24
#4037
35K
21.75 mi12:29:342:28:086:494:57
6:37
#3973
23M
23.00 mi12:38:202:36:546:498:46
7:00
#3944
24M
24.00 mi12:45:122:43:466:496:52
6:52
#3948
40K
24.85 mi12:51:032:49:376:495:51
6:51
#3883
25.2M
25.20 mi12:53:382:52:126:502:35
7:29
#3880
Finish
26.22 mi13:00:212:58:556:506:43
6:35
#3829
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3250306930695183(Top 19%)4791(Top 32%)4791(Top 91%)
10K6.21 mi3.10 mi3136+1142978+912978+913045(Top 11%)2906(Top 19%)2906(Top 55%)
15K9.32 mi3.11 mi3676-5403472-4943472-4945183(Top 19%)4791(Top 32%)4791(Top 91%)
20K12.43 mi3.11 mi4100-4243849-3773849-3775279(Top 20%)4872(Top 32%)4872(Top 92%)
Half13.11 mi0.68 mi4119-193864-153864-154679(Top 18%)4341(Top 29%)4341(Top 82%)
25K15.53 mi2.42 mi4095+243844+203844+204068(Top 15%)3814(Top 25%)3814(Top 72%)
30K18.64 mi3.11 mi4136-413888-443888-444491(Top 17%)4159(Top 27%)4159(Top 79%)
20M20.00 mi1.36 mi4046+903803+853803+853312(Top 12%)3101(Top 20%)3101(Top 59%)
21M21.00 mi1.00 mi4037+93789+143789+144115(Top 15%)3784(Top 25%)3784(Top 72%)
35K21.75 mi0.75 mi3973+643732+573732+573113(Top 12%)2915(Top 19%)2915(Top 55%)
23M23.00 mi1.25 mi3944+293701+313701+313798(Top 14%)3505(Top 23%)3505(Top 66%)
24M24.00 mi1.00 mi3948-43699+23699+24002(Top 15%)3650(Top 24%)3650(Top 69%)
40K24.85 mi0.85 mi3883+653644+553644+553035(Top 11%)2793(Top 18%)2793(Top 53%)
25.2M25.20 mi0.35 mi3880+33640+43640+43824(Top 14%)3414(Top 22%)3414(Top 65%)
Finish26.22 mi1.02 mi3829+513594+463594+462945(Top 11%)2670(Top 18%)2670(Top 51%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21stories
+97ft-345ft

Overall

5183

Males

4791

M18-39

4791

5K→10K

3.1 - 6.2 mi

Top 11%
×5stories
+79ft-138ft

Overall

3045

Males

2906

M18-39

2906

10K→15K

6.2 - 9.3 mi

Top 19%
×3stories
+67ft-78ft

Overall

5183

Males

4791

M18-39

4791

15K→20K

9.3 - 12.4 mi

Top 20%
×5stories
+106ft-86ft

Overall

5279

Males

4872

M18-39

4872

20K→Half

12.4 - 13.1 mi

Top 18%
×2stories
+19ft-37ft

Overall

4679

Males

4341

M18-39

4341

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

4068

Males

3814

M18-39

3814

25K→30K

15.5 - 18.6 mi

Top 17%
×9stories
+181ft-148ft

Overall

4491

Males

4159

M18-39

4159

30K→20M

18.6 - 20.0 mi

Top 12%
×5stories
+64ft-50ft

Overall

3312

Males

3101

M18-39

3101

20M→21M

20.0 - 21.0 mi

Top 15%
×8stories
+106ft-24ft

Overall

4115

Males

3784

M18-39

3784

21M→35K

21.0 - 21.8 mi

Top 12%
×7stories
+17ft-86ft

Overall

3113

Males

2915

M18-39

2915

35K→23M

21.8 - 23.0 mi

Top 14%
×5stories
+23ft-63ft

Overall

3798

Males

3505

M18-39

3505

23M→24M

23.0 - 24.0 mi

Top 15%
×6stories
+12ft-82ft

Overall

4002

Males

3650

M18-39

3650

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

3035

Males

2793

M18-39

2793

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3824

Males

3414

M18-39

3414

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2stories
+22ft-21ft

Overall

2945

Males

2670

M18-39

2670

Passing Analysis

Category:
Athletes Passed
1017
Passed By
1596
Net Change
-579
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3250
5K → 10K217103+114#3250#3136
10K → 15K13553-540#3136#3676
15K → 20K25449-424#3676#4100
20K → Half1433-19#4100#4119
Half → 25K8662+24#4119#4095
25K → 30K104145-41#4095#4136
30K → 20M10212+90#4136#4046
20M → 21M7566+9#4046#4037
21M → 35K728+64#4037#3973
35K → 23M7445+29#3973#3944
23M → 24M5155-4#3944#3948
24M → 40K7914+65#3948#3883
40K → 25.2M2926+3#3883#3880
25.2M → Finish7625+51#3880#3829
TOTALS10171596-579
📊

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