Boston Marathon logo
BOSTON MARATHON 2023

Brian Bonner

Bib: 25310•M

PA

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

Start
0:00:00
Race begins
5K· 3.11 mi
30:01
Rank: #22542
Start → 5K
30:01 | 9:40/mi
10K· 6.21 mi
58:46
Rank: #22225 (+317)
5K → 10K
28:45 | 9:15/mi
15K· 9.32 mi
1:27:59
Rank: #22116 (+109)
10K → 15K
29:13 | 9:24/mi
20K· 12.43 mi
1:57:59
Rank: #22086 (+30)
15K → 20K
30:00 | 9:39/mi
Half· 13.11 mi
2:04:36
Rank: #22121 (-35)
20K → Half
6:37 | 9:42/mi
25K· 15.53 mi
2:30:30
Rank: #22442 (-321)
Half → 25K
25:54 | 10:41/mi
30K· 18.64 mi
3:02:34
Rank: #22328 (+114)
25K → 30K
32:04 | 10:19/mi
20M
3:19:01
Rank: #22515 (-187)
30K → 20M
16:27 | 12:06/mi
21M
3:30:09
Rank: #22439 (+76)
20M → 21M
11:08 | 11:08/mi
35K· 21.75 mi
3:38:12
Rank: #22458 (-19)
21M → 35K
8:03 | 10:46/mi
23M
3:51:57
Rank: #22446 (+12)
35K → 23M
13:45 | 10:59/mi
24M
4:02:38
Rank: #22446
23M → 24M
10:41 | 10:41/mi
40K· 24.85 mi
4:12:05
Rank: #22448 (-2)
24M → 40K
9:27 | 11:03/mi
25.2M
4:16:15
Rank: #22442 (+6)
40K → 25.2M
4:10 | 12:05/mi
Finish· 26.22 mi
4:26:28
Rank: #22423 (+19)
25.2M → Finish
10:13 | 10:02/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
Time2:04:36
Pace9:30 /mi
2nd Half
Distance13.11 mi
Time2:21:52
Pace10:49 /mi
📊Positive Split: 13.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:1230:019:4030:01
9:40
-
10K
6.21 mi12:14:5758:469:2728:45
9:15
-0:25
15K
9.32 mi12:44:101:27:599:2629:13
9:24
+0:09
20K
12.43 mi13:14:101:57:599:3030:00
9:39
+0:15
Half
13.11 mi13:20:472:04:369:306:37
9:42
+0:03
25K
15.53 mi13:46:412:30:309:4125:54
10:41
+0:59
30K
18.64 mi14:18:453:02:349:4832:04
10:19
-0:22
20M
20.00 mi14:35:123:19:019:5716:27
12:06
+1:47
21M
21.00 mi14:46:203:30:0910:0011:08
11:08
-0:58
35K
21.75 mi14:54:233:38:1210:028:03
10:46
-0:22
23M
23.00 mi15:08:083:51:5710:0513:45
10:59
+0:13
24M
24.00 mi15:18:494:02:3810:0710:41
10:41
-0:18
40K
24.85 mi15:28:164:12:0510:099:27
11:03
+0:22
25.2M
25.20 mi15:32:264:16:1510:104:10
12:05
+1:02
Finish
26.22 mi15:42:394:26:2810:1010:13
10:02
-2:03

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

9:15 /mi

Average Pace

10:10 /mi

Slowest Pace

12:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:14:49

51% of race

Time at Steady Pace

1:39:54

37% of race

Time at Slower Pace

31:45

12% 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 mi11:46:1230:019:4030:01
9:40
#22542
10K
6.21 mi12:14:5758:469:2728:45
9:15
#22225
15K
9.32 mi12:44:101:27:599:2629:13
9:24
#22116
20K
12.43 mi13:14:101:57:599:3030:00
9:39
#22086
Half
13.11 mi13:20:472:04:369:306:37
9:42
#22121
25K
15.53 mi13:46:412:30:309:4125:54
10:41
#22442
30K
18.64 mi14:18:453:02:349:4832:04
10:19
#22328
20M
20.00 mi14:35:123:19:019:5716:27
12:06
#22515
21M
21.00 mi14:46:203:30:0910:0011:08
11:08
#22439
35K
21.75 mi14:54:233:38:1210:028:03
10:46
#22458
23M
23.00 mi15:08:083:51:5710:0513:45
10:59
#22446
24M
24.00 mi15:18:494:02:3810:0710:41
10:41
#22446
40K
24.85 mi15:28:164:12:0510:099:27
11:03
#22448
25.2M
25.20 mi15:32:264:16:1510:104:10
12:05
#22442
Finish
26.22 mi15:42:394:26:2810:1010:13
10:02
#22423
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi22542133651336521965(Top 83%)13176(Top 87%)13176(Top 249%)
10K6.21 mi3.10 mi22225+31713240+12513240+12521790(Top 82%)13058(Top 86%)13058(Top 247%)
15K9.32 mi3.11 mi22116+10913196+4413196+4421965(Top 83%)13176(Top 87%)13176(Top 249%)
20K12.43 mi3.11 mi22086+3013185+1113185+1122022(Top 83%)13188(Top 87%)13188(Top 250%)
Half13.11 mi0.68 mi22121-3513204-1913204-1922625(Top 85%)13452(Top 89%)13452(Top 255%)
25K15.53 mi2.42 mi22442-32113345-14113345-14123481(Top 88%)13802(Top 91%)13802(Top 261%)
30K18.64 mi3.11 mi22328+11413282+6313282+6321822(Top 82%)12999(Top 86%)12999(Top 246%)
20M20.00 mi1.36 mi22515-18713347-6513347-6524325(Top 91%)14055(Top 93%)14055(Top 266%)
21M21.00 mi1.00 mi22439+7613307+4013307+4021098(Top 79%)12566(Top 83%)12566(Top 238%)
35K21.75 mi0.75 mi22458-1913312-513312-522840(Top 86%)13309(Top 88%)13309(Top 252%)
23M23.00 mi1.25 mi22446+1213302+1013302+1022301(Top 84%)13061(Top 86%)13061(Top 247%)
24M24.00 mi1.00 mi2244613292+1013292+1022411(Top 84%)13072(Top 86%)13072(Top 247%)
40K24.85 mi0.85 mi22448-213284+813284+822455(Top 84%)13060(Top 86%)13060(Top 247%)
25.2M25.20 mi0.35 mi22442+613279+513279+522628(Top 85%)13141(Top 87%)13141(Top 249%)
Finish26.22 mi1.02 mi22423+1913263+1613263+1621820(Top 82%)12780(Top 84%)12780(Top 242%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21stories
+97ft-345ft

Overall

21965

Males

13176

M18-39

13176

5K→10K

3.1 - 6.2 mi

Top 82%
×5stories
+79ft-138ft

Overall

21790

Males

13058

M18-39

13058

10K→15K

6.2 - 9.3 mi

Top 83%
×3stories
+67ft-78ft

Overall

21965

Males

13176

M18-39

13176

15K→20K

9.3 - 12.4 mi

Top 83%
×5stories
+106ft-86ft

Overall

22022

Males

13188

M18-39

13188

20K→Half

12.4 - 13.1 mi

Top 85%
×2stories
+19ft-37ft

Overall

22625

Males

13452

M18-39

13452

Half→25K

13.1 - 15.5 mi

Top 88%
×4stories
+66ft-88ft

Overall

23481

Males

13802

M18-39

13802

25K→30K

15.5 - 18.6 mi

Top 82%
×9stories
+181ft-148ft

Overall

21822

Males

12999

M18-39

12999

30K→20M

18.6 - 20.0 mi

Top 91%
×5stories
+64ft-50ft

Overall

24325

Males

14055

M18-39

14055

20M→21M

20.0 - 21.0 mi

Top 79%
×8stories
+106ft-24ft

Overall

21098

Males

12566

M18-39

12566

21M→35K

21.0 - 21.8 mi

Top 86%
×7stories
+17ft-86ft

Overall

22840

Males

13309

M18-39

13309

35K→23M

21.8 - 23.0 mi

Top 84%
×5stories
+23ft-63ft

Overall

22301

Males

13061

M18-39

13061

23M→24M

23.0 - 24.0 mi

Top 84%
×6stories
+12ft-82ft

Overall

22411

Males

13072

M18-39

13072

24M→40K

24.0 - 24.9 mi

Top 84%
×1story
+6ft-20ft

Overall

22455

Males

13060

M18-39

13060

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

22628

Males

13141

M18-39

13141

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2stories
+22ft-21ft

Overall

21820

Males

12780

M18-39

12780

Passing Analysis

Category:
Athletes Passed
1367
Passed By
1248
Net Change
+119
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22542
5K → 10K437120+317#22542#22225
10K → 15K224115+109#22225#22116
15K → 20K154124+30#22116#22086
20K → Half1348-35#22086#22121
Half → 25K31352-321#22121#22442
25K → 30K17460+114#22442#22328
30K → 20M17204-187#22328#22515
20M → 21M10125+76#22515#22439
21M → 35K3049-19#22439#22458
35K → 23M6553+12#22458#22446
23M → 24M30300#22446#22446
24M → 40K3234-2#22446#22448
40K → 25.2M1812+6#22448#22442
25.2M → Finish4122+19#22442#22423
TOTALS13671248+119
📊

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