Boston Marathon logo
BOSTON MARATHON 2023

German Alonso-Alegre

Bib: 31415•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M50-54)
#0 / 2052
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:31
Rank: #22092
Start → 5K
29:31 | 9:30/mi
10K· 6.21 mi
58:33
Rank: #22118 (-26)
5K → 10K
29:02 | 9:21/mi
15K· 9.32 mi
1:28:09
Rank: #22172 (-54)
10K → 15K
29:36 | 9:32/mi
20K· 12.43 mi
2:00:04
Rank: #22587 (-415)
15K → 20K
31:55 | 10:16/mi
Half· 13.11 mi
2:06:40
Rank: #22583 (+4)
20K → Half
6:36 | 9:40/mi
25K· 15.53 mi
2:30:52
Rank: #22504 (+79)
Half → 25K
24:12 | 9:59/mi
30K· 18.64 mi
3:04:24
Rank: #22544 (-40)
25K → 30K
33:32 | 10:48/mi
20M
3:19:04
Rank: #22524 (+20)
30K → 20M
14:40 | 10:48/mi
21M
3:30:37
Rank: #22492 (+32)
20M → 21M
11:33 | 11:33/mi
35K· 21.75 mi
3:38:09
Rank: #22447 (+45)
21M → 35K
7:32 | 10:04/mi
23M
3:52:19
Rank: #22486 (-39)
35K → 23M
14:10 | 11:19/mi
24M
4:03:12
Rank: #22496 (-10)
23M → 24M
10:53 | 10:53/mi
40K· 24.85 mi
4:12:37
Rank: #22492 (+4)
24M → 40K
9:25 | 11:01/mi
25.2M
4:16:27
Rank: #22460 (+32)
40K → 25.2M
3:50 | 11:07/mi
Finish· 26.22 mi
4:26:44
Rank: #22447 (+13)
25.2M → Finish
10:17 | 10:05/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
Time2:06:40
Pace9:40 /mi
2nd Half
Distance13.11 mi
Time2:20:04
Pace10:41 /mi
📊Positive Split: 10.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:4129:319:3029:31
9:30
-
10K
6.21 mi12:18:4358:339:2529:02
9:21
-0:09
15K
9.32 mi12:48:191:28:099:2729:36
9:32
+0:11
20K
12.43 mi13:20:142:00:049:4031:55
10:16
+0:44
Half
13.11 mi13:26:502:06:409:406:36
9:40
-0:36
25K
15.53 mi13:51:022:30:529:4324:12
9:59
+0:19
30K
18.64 mi14:24:343:04:249:5433:32
10:48
+0:49
20M
20.00 mi14:39:143:19:049:5714:40
10:48
0:00
21M
21.00 mi14:50:473:30:3710:0211:33
11:33
+0:45
35K
21.75 mi14:58:193:38:0910:027:32
10:04
-1:29
23M
23.00 mi15:12:293:52:1910:0614:10
11:19
+1:15
24M
24.00 mi15:23:224:03:1210:0810:53
10:53
-0:26
40K
24.85 mi15:32:474:12:3710:109:25
11:01
+0:08
25.2M
25.20 mi15:36:374:16:2710:113:50
11:07
+0:06
Finish
26.22 mi15:46:544:26:4410:1110:17
10:05
-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

9:21 /mi

Average Pace

10:11 /mi

Slowest Pace

11:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:34:45

36% of race

Time at Steady Pace

1:13:56

28% of race

Time at Slower Pace

1:38:03

37% of race

Average Pace: 10:10 /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 mi11:49:4129:319:3029:31
9:30
#22092
10K
6.21 mi12:18:4358:339:2529:02
9:21
#22118
15K
9.32 mi12:48:191:28:099:2729:36
9:32
#22172
20K
12.43 mi13:20:142:00:049:4031:55
10:16
#22587
Half
13.11 mi13:26:502:06:409:406:36
9:40
#22583
25K
15.53 mi13:51:022:30:529:4324:12
9:59
#22504
30K
18.64 mi14:24:343:04:249:5433:32
10:48
#22544
20M
20.00 mi14:39:143:19:049:5714:40
10:48
#22524
21M
21.00 mi14:50:473:30:3710:0211:33
11:33
#22492
35K
21.75 mi14:58:193:38:0910:027:32
10:04
#22447
23M
23.00 mi15:12:293:52:1910:0614:10
11:19
#22486
24M
24.00 mi15:23:224:03:1210:0810:53
10:53
#22496
40K
24.85 mi15:32:474:12:3710:109:25
11:01
#22492
25.2M
25.20 mi15:36:374:16:2710:113:50
11:07
#22460
Finish
26.22 mi15:46:544:26:4410:1110:17
10:05
#22447
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi22092131511315122326(Top 84%)13332(Top 88%)13332(Top 650%)
10K6.21 mi3.10 mi22118-2613181-3013181-3022060(Top 83%)13193(Top 87%)13193(Top 643%)
15K9.32 mi3.11 mi22172-5413228-4713228-4722326(Top 84%)13332(Top 88%)13332(Top 650%)
20K12.43 mi3.11 mi22587-41513434-20613434-20623422(Top 88%)13825(Top 91%)13825(Top 674%)
Half13.11 mi0.68 mi22583+413427+713427+722569(Top 85%)13429(Top 88%)13429(Top 654%)
25K15.53 mi2.42 mi22504+7913376+5113376+5122169(Top 83%)13218(Top 87%)13218(Top 644%)
30K18.64 mi3.11 mi22544-4013366+1013366+1022775(Top 86%)13415(Top 88%)13415(Top 654%)
20M20.00 mi1.36 mi22524+2013351+1513351+1522331(Top 84%)13152(Top 87%)13152(Top 641%)
21M21.00 mi1.00 mi22492+3213331+2013331+2021955(Top 82%)12966(Top 85%)12966(Top 632%)
35K21.75 mi0.75 mi22447+4513309+2213309+2221481(Top 81%)12708(Top 84%)12708(Top 619%)
23M23.00 mi1.25 mi22486-3913320-1113320-1122908(Top 86%)13345(Top 88%)13345(Top 650%)
24M24.00 mi1.00 mi22496-1013319+113319+122806(Top 86%)13258(Top 87%)13258(Top 646%)
40K24.85 mi0.85 mi22492+413308+1113308+1122388(Top 84%)13029(Top 86%)13029(Top 635%)
25.2M25.20 mi0.35 mi22460+3213285+2313285+2320710(Top 78%)12261(Top 81%)12261(Top 598%)
Finish26.22 mi1.02 mi22447+1313273+1213273+1222000(Top 83%)12862(Top 85%)12862(Top 627%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 84%
×21stories
+97ft-345ft

Overall

22326

Males

13332

M50-54

13332

5K→10K

3.1 - 6.2 mi

Top 83%
×5stories
+79ft-138ft

Overall

22060

Males

13193

M50-54

13193

10K→15K

6.2 - 9.3 mi

Top 84%
×3stories
+67ft-78ft

Overall

22326

Males

13332

M50-54

13332

15K→20K

9.3 - 12.4 mi

Top 88%
×5stories
+106ft-86ft

Overall

23422

Males

13825

M50-54

13825

20K→Half

12.4 - 13.1 mi

Top 85%
×2stories
+19ft-37ft

Overall

22569

Males

13429

M50-54

13429

Half→25K

13.1 - 15.5 mi

Top 83%
×4stories
+66ft-88ft

Overall

22169

Males

13218

M50-54

13218

25K→30K

15.5 - 18.6 mi

Top 86%
×9stories
+181ft-148ft

Overall

22775

Males

13415

M50-54

13415

30K→20M

18.6 - 20.0 mi

Top 84%
×5stories
+64ft-50ft

Overall

22331

Males

13152

M50-54

13152

20M→21M

20.0 - 21.0 mi

Top 82%
×8stories
+106ft-24ft

Overall

21955

Males

12966

M50-54

12966

21M→35K

21.0 - 21.8 mi

Top 81%
×7stories
+17ft-86ft

Overall

21481

Males

12708

M50-54

12708

35K→23M

21.8 - 23.0 mi

Top 86%
×5stories
+23ft-63ft

Overall

22908

Males

13345

M50-54

13345

23M→24M

23.0 - 24.0 mi

Top 86%
×6stories
+12ft-82ft

Overall

22806

Males

13258

M50-54

13258

24M→40K

24.0 - 24.9 mi

Top 84%
×1story
+6ft-20ft

Overall

22388

Males

13029

M50-54

13029

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

20710

Males

12261

M50-54

12261

25.2M→Finish

25.2 - 26.2 mi

Top 83%
×2stories
+22ft-21ft

Overall

22000

Males

12862

M50-54

12862

Passing Analysis

Category:
Athletes Passed
1062
Passed By
1417
Net Change
-355
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22092
5K → 10K229255-26#22092#22118
10K → 15K149203-54#22118#22172
15K → 20K47462-415#22172#22587
20K → Half2723+4#22587#22583
Half → 25K13556+79#22583#22504
25K → 30K102142-40#22504#22544
30K → 20M6141+20#22544#22524
20M → 21M7442+32#22524#22492
21M → 35K6116+45#22492#22447
35K → 23M4382-39#22447#22486
23M → 24M3141-10#22486#22496
24M → 40K2824+4#22496#22492
40K → 25.2M353+32#22492#22460
25.2M → Finish4027+13#22460#22447
TOTALS10621417-355
📊

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