Boston Marathon logo
BOSTON MARATHON 2023

Rob Bondy

Bib: 27725•M

ON

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

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:46/mi
27:13
↑ 97↓ 3451.5%
10K· 6.21 mi
8:29/mi
53:33
↑ 79↓ 1380.4%
15K· 9.32 mi
8:30/mi
1:19:57
↑ 67↓ 78
20K· 12.43 mi
8:35/mi
1:46:37
↑ 106↓ 860.1%
Half· 13.11 mi
8:32/mi
1:52:26
↑ 19↓ 370.5%
25K· 15.53 mi
8:48/mi
2:13:45
↑ 66↓ 880.2%
30K· 18.64 mi
9:18/mi
2:42:39
↑ 181↓ 1480.2%
20M
9:48/mi
2:55:58
↑ 64↓ 500.2%
21M
10:40/mi
3:06:38
↑ 106↓ 241.6%
35K· 21.75 mi
9:20/mi
3:13:37
↑ 17↓ 861.7%
23M
9:32/mi
3:25:33
↑ 23↓ 630.6%
24M
9:33/mi
3:35:06
↓ 821.3%
40K· 24.85 mi
9:38/mi
3:43:20
↓ 200.3%
25.2M
10:23/mi
3:46:55
↑ 13↓ 160.2%
Finish· 26.22 mi
9:22/mi
3:56:28
↑ 22↓ 21

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
Time1:52:26
Pace8:35 /mi
2nd Half
Distance13.11 mi
Time2:04:02
Pace9:28 /mi
📊Positive Split: 10.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:4527:138:4627:13
8:46
-
10K
6.21 mi12:11:0553:338:3726:20
8:29
-0:17
15K
9.32 mi12:37:291:19:578:3526:24
8:30
+0:01
20K
12.43 mi13:04:091:46:378:3526:40
8:35
+0:05
Half
13.11 mi13:09:581:52:268:355:49
8:32
-0:03
25K
15.53 mi13:31:172:13:458:3721:19
8:48
+0:16
30K
18.64 mi14:00:112:42:398:4428:54
9:18
+0:30
20M
20.00 mi14:13:302:55:588:4813:19
9:48
+0:30
21M
21.00 mi14:24:103:06:388:5310:40
10:40
+0:52
35K
21.75 mi14:31:093:13:378:546:59
9:20
-1:20
23M
23.00 mi14:43:053:25:338:5611:56
9:32
+0:12
24M
24.00 mi14:52:383:35:068:589:33
9:33
+0:01
40K
24.85 mi15:00:523:43:208:598:14
9:38
+0:05
25.2M
25.20 mi15:04:273:46:559:003:35
10:23
+0:45
Finish
26.22 mi15:14:003:56:289:029:33
9:22
-1:01

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

8:29 /mi

Average Pace

9:02 /mi

Slowest Pace

10:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:13:45

57% of race

Time at Steady Pace

1:15:09

32% of race

Time at Slower Pace

27:34

12% of race

Average Pace: 9:01 /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 mi11:44:4527:138:4627:13
8:46
#19229
10K
6.21 mi12:11:0553:338:3726:20
8:29
#18619
15K
9.32 mi12:37:291:19:578:3526:24
8:30
#18343
20K
12.43 mi13:04:091:46:378:3526:40
8:35
#18084
Half
13.11 mi13:09:581:52:268:355:49
8:32
#18062
25K
15.53 mi13:31:172:13:458:3721:19
8:48
#18018
30K
18.64 mi14:00:112:42:398:4428:54
9:18
#18132
20M
20.00 mi14:13:302:55:588:4813:19
9:48
#18327
21M
21.00 mi14:24:103:06:388:5310:40
10:40
#18472
35K
21.75 mi14:31:093:13:378:546:59
9:20
#18502
23M
23.00 mi14:43:053:25:338:5611:56
9:32
#18496
24M
24.00 mi14:52:383:35:068:589:33
9:33
#18558
40K
24.85 mi15:00:523:43:208:598:14
9:38
#18578
25.2M
25.20 mi15:04:273:46:559:003:35
10:23
#18594
Finish
26.22 mi15:14:003:56:289:029:33
9:22
#18653
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi19229118611186117788(Top 67%)11385(Top 75%)11385(Top 555%)
10K6.21 mi3.10 mi18619+61011706+15511706+15518093(Top 68%)11544(Top 76%)11544(Top 563%)
15K9.32 mi3.11 mi18343+27611609+9711609+9717788(Top 67%)11385(Top 75%)11385(Top 555%)
20K12.43 mi3.11 mi18084+25911503+10611503+10617383(Top 65%)11207(Top 74%)11207(Top 546%)
Half13.11 mi0.68 mi18062+2211494+911494+917830(Top 67%)11436(Top 75%)11436(Top 557%)
25K15.53 mi2.42 mi18018+4411454+4011454+4017908(Top 67%)11372(Top 75%)11372(Top 554%)
30K18.64 mi3.11 mi18132-11411463-911463-918633(Top 70%)11620(Top 77%)11620(Top 566%)
20M20.00 mi1.36 mi18327-19511531-6811531-6819842(Top 75%)12051(Top 79%)12051(Top 587%)
21M21.00 mi1.00 mi18472-14511588-5711588-5720043(Top 75%)12064(Top 79%)12064(Top 588%)
35K21.75 mi0.75 mi18502-3011593-511593-519272(Top 72%)11718(Top 77%)11718(Top 571%)
23M23.00 mi1.25 mi18496+611579+1411579+1418440(Top 69%)11323(Top 75%)11323(Top 552%)
24M24.00 mi1.00 mi18558-6211596-1711596-1719377(Top 73%)11702(Top 77%)11702(Top 570%)
40K24.85 mi0.85 mi18578-2011590+611590+618789(Top 71%)11391(Top 75%)11391(Top 555%)
25.2M25.20 mi0.35 mi18594-1611594-411594-418724(Top 70%)11352(Top 75%)11352(Top 553%)
Finish26.22 mi1.02 mi18653-5911610-1611610-1619640(Top 74%)11816(Top 78%)11816(Top 576%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21story building
+97ft-345ft

Overall

17788

Males

11385

M50-54

11385

5K→10K

3.1 - 6.2 mi

Top 68%
×5story building
+79ft-138ft

Overall

18093

Males

11544

M50-54

11544

10K→15K

6.2 - 9.3 mi

Top 67%
×3story building
+67ft-78ft

Overall

17788

Males

11385

M50-54

11385

15K→20K

9.3 - 12.4 mi

Top 65%
×5story building
+106ft-86ft

Overall

17383

Males

11207

M50-54

11207

20K→Half

12.4 - 13.1 mi

Top 67%
×2story building
+19ft-37ft

Overall

17830

Males

11436

M50-54

11436

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

17908

Males

11372

M50-54

11372

25K→30K

15.5 - 18.6 mi

Top 70%
×9story building
+181ft-148ft

Overall

18633

Males

11620

M50-54

11620

30K→20M

18.6 - 20.0 mi

Top 75%
×5story building
+64ft-50ft

Overall

19842

Males

12051

M50-54

12051

20M→21M

20.0 - 21.0 mi

Top 75%
×8story building
+106ft-24ft

Overall

20043

Males

12064

M50-54

12064

21M→35K

21.0 - 21.8 mi

Top 72%
×7story building
+17ft-86ft

Overall

19272

Males

11718

M50-54

11718

35K→23M

21.8 - 23.0 mi

Top 69%
×5story building
+23ft-63ft

Overall

18440

Males

11323

M50-54

11323

23M→24M

23.0 - 24.0 mi

Top 73%
×6story building
+12ft-82ft

Overall

19377

Males

11702

M50-54

11702

24M→40K

24.0 - 24.9 mi

Top 71%
×1story
+6ft-20ft

Overall

18789

Males

11391

M50-54

11391

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

18724

Males

11352

M50-54

11352

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2story building
+22ft-21ft

Overall

19640

Males

11816

M50-54

11816

Passing Analysis

Category:
Athletes Passed
2080
Passed By
1504
Net Change
+576
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19229
5K → 10K765155+610#19229#18619
10K → 15K34771+276#18619#18343
15K → 20K30950+259#18343#18084
20K → Half3917+22#18084#18062
Half → 25K145101+44#18062#18018
25K → 30K153267-114#18018#18132
30K → 20M38233-195#18132#18327
20M → 21M44189-145#18327#18472
21M → 35K3363-30#18472#18502
35K → 23M7771+6#18502#18496
23M → 24M3799-62#18496#18558
24M → 40K4565-20#18558#18578
40K → 25.2M2036-16#18578#18594
25.2M → Finish2887-59#18594#18653
TOTALS20801504+576
📊

Passing Visuals

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