Boston Marathon logo
BOSTON MARATHON 2023

Dan Distefano

MA

Bib: 30525 M

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

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
9:11/mi
28:31
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:58/mi
56:22
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:42/mi
1:23:23
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:37/mi
1:50:09
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:42/mi
1:56:05
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:46/mi
2:17:21
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:52/mi
2:44:53
↑ 181↓ 1480.2%
138 ft elev
20M
8:52/mi
2:56:56
↑ 64↓ 500.2%
148 ft elev
21M
9:20/mi
3:06:16
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
8:40/mi
3:12:45
↑ 17↓ 861.7%
156 ft elev
23M
8:52/mi
3:23:51
↑ 23↓ 630.6%
116 ft elev
24M
8:32/mi
3:32:23
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:31/mi
3:39:40
↓ 200.3%
20 ft elev
25.2M
9:08/mi
3:42:49
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:10/mi
3:51:08
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:56:058:51 /mi⚖️ balanced
2nd Half
1:55:038:47 /mi⚖️ balanced
Even split — consistent pacing between halves
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
28:319:113.11 mi28:31
9:11
-
10K
56:229:043.10 mi27:51
8:58
-0:13
15K
1:23:238:573.11 mi27:01
8:42
-0:16
20K
1:50:098:523.11 mi26:46
8:37
-0:05
Half(13.11 mi)
1:56:058:510.68 mi5:56
8:42
+0:05
25K
2:17:218:512.42 mi21:16
8:46
+0:04
30K
2:44:538:513.11 mi27:32
8:52
+0:06
20M
2:56:568:511.36 mi12:03
8:52
0:00
21M
3:06:168:521.00 mi9:20
9:20
+0:28
35K
3:12:458:520.75 mi6:29
8:40
-0:40
23M
3:23:518:521.25 mi11:06
8:52
+0:12
24M
3:32:238:511.00 mi8:32
8:32
-0:20
40K
3:39:408:500.85 mi7:17
8:31
-0:01
25.2M
3:42:498:510.35 mi3:09
9:08
+0:37
Finish(26.22 mi)
3:51:088:491.02 mi8:19
8:10
-0:58
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

8:10 /mi

Average Pace

8:49 /mi

Slowest Pace

9:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

3:10:08

82% of race

Time at Steady Pace

41:00

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:49 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi211461267712677189411185011850
10K3.10 mi20935+21112629+4812629+48207241259612596
15K3.11 mi20323+61212383+24612383+246189411185011850
20K3.11 mi19651+67212117+26612117+266175871128711287
Half(13.11 mi)0.68 mi19624+2712105+1212105+12188681183311833
25K2.42 mi19315+30911979+12611979+126177771131011310
30K3.11 mi18821+49411759+22011759+220164381067110671
20M1.36 mi18586+23511642+11711642+117158141034210342
21M1.00 mi18372+21411539+10311539+103151741000910009
35K0.75 mi18285+8711493+4611493+46162231038510385
23M1.25 mi18115+17011414+7911414+791535299689968
24M1.00 mi17976+13911344+7011344+701467796109610
40K0.85 mi17830+14611279+6511279+651346690059005
25.2M0.35 mi17765+6511244+3511244+351326589068906
Finish(26.22 mi)1.02 mi17596+16911163+8111163+811317188678867

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21story building
+97ft-345ft

Overall

18941

Males

11850

M18-39

11850

5K→10K

3.1 - 6.2 mi

Top 78%
×5story building
+79ft-138ft

Overall

20724

Males

12596

M18-39

12596

10K→15K

6.2 - 9.3 mi

Top 71%
×3story building
+67ft-78ft

Overall

18941

Males

11850

M18-39

11850

15K→20K

9.3 - 12.4 mi

Top 66%
×5story building
+106ft-86ft

Overall

17587

Males

11287

M18-39

11287

20K→Half

12.4 - 13.1 mi

Top 71%
×2story building
+19ft-37ft

Overall

18868

Males

11833

M18-39

11833

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

17777

Males

11310

M18-39

11310

25K→30K

15.5 - 18.6 mi

Top 62%
×9story building
+181ft-148ft

Overall

16438

Males

10671

M18-39

10671

30K→20M

18.6 - 20.0 mi

Top 59%
×5story building
+64ft-50ft

Overall

15814

Males

10342

M18-39

10342

20M→21M

20.0 - 21.0 mi

Top 57%
×8story building
+106ft-24ft

Overall

15174

Males

10009

M18-39

10009

21M→35K

21.0 - 21.8 mi

Top 61%
×7story building
+17ft-86ft

Overall

16223

Males

10385

M18-39

10385

35K→23M

21.8 - 23.0 mi

Top 58%
×5story building
+23ft-63ft

Overall

15352

Males

9968

M18-39

9968

23M→24M

23.0 - 24.0 mi

Top 55%
×6story building
+12ft-82ft

Overall

14677

Males

9610

M18-39

9610

24M→40K

24.0 - 24.9 mi

Top 51%
×1story
+6ft-20ft

Overall

13466

Males

9005

M18-39

9005

40K→25.2M

24.9 - 25.2 mi

Top 50%
×1story
+13ft-16ft

Overall

13265

Males

8906

M18-39

8906

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2story building
+22ft-21ft

Overall

13171

Males

8867

M18-39

8867

Passing Analysis

Category:
Passed
3862
Passed By
312
Net Change
+3550
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21146
5K → 10K399188+211#21146#20935
10K → 15K63220+612#20935#20323
15K → 20K6753+672#20323#19651
20K → Half4720+27#19651#19624
Half → 25K32213+309#19624#19315
25K → 30K5039+494#19315#18821
30K → 20M2427+235#18821#18586
20M → 21M22511+214#18586#18372
21M → 35K914+87#18372#18285
35K → 23M18414+170#18285#18115
23M → 24M1478+139#18115#17976
24M → 40K1471+146#17976#17830
40K → 25.2M672+65#17830#17765
25.2M → Finish18112+169#17765#17596
TOTALS3862312+3550

Passing Charts

Category:
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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing