Boston Marathon logo
BOSTON MARATHON 2023

Brian Horneck

Bib: 566•M

OR

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 0.8%
Gender (Male)
#0 / 15176
Top 1%
Division (M18-39)
#0 / 5285
Top 3%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
17:41
Rank: #260
Start → 5K
17:41 | 5:42/mi
10K· 6.21 mi
35:22
Rank: #284 (-24)
5K → 10K
17:41 | 5:42/mi
15K· 9.32 mi
53:13
Rank: #292 (-8)
10K → 15K
17:51 | 5:45/mi
20K· 12.43 mi
1:11:11
Rank: #289 (+3)
15K → 20K
17:58 | 5:47/mi
Half· 13.11 mi
1:15:07
Rank: #293 (-4)
20K → Half
3:56 | 5:46/mi
25K· 15.53 mi
1:29:04
Rank: #282 (+11)
Half → 25K
13:57 | 5:45/mi
30K· 18.64 mi
1:47:36
Rank: #281 (+1)
25K → 30K
18:32 | 5:58/mi
20M
1:55:42
Rank: #278 (+3)
30K → 20M
8:06 | 5:58/mi
21M
2:02:01
Rank: #274 (+4)
20M → 21M
6:19 | 6:19/mi
35K· 21.75 mi
2:06:14
Rank: #268 (+6)
21M → 35K
4:13 | 5:38/mi
23M
2:13:43
Rank: #259 (+9)
35K → 23M
7:29 | 5:59/mi
24M
2:19:26
Rank: #245 (+14)
23M → 24M
5:43 | 5:43/mi
40K· 24.85 mi
2:24:28
Rank: #230 (+15)
24M → 40K
5:02 | 5:53/mi
25.2M
2:26:39
Rank: #230
40K → 25.2M
2:11 | 6:20/mi
Finish· 26.22 mi
2:32:28
Rank: #225 (+5)
25.2M → Finish
5:49 | 5:42/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
Time1:15:07
Pace5:44 /mi
2nd Half
Distance13.11 mi
Time1:17:21
Pace5:54 /mi
📊Positive Split: 3.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:17:4917:415:4217:41
5:42
-
10K
6.21 mi10:35:3035:225:4217:41
5:42
0:00
15K
9.32 mi10:53:2153:135:4317:51
5:45
+0:03
20K
12.43 mi11:11:191:11:115:4417:58
5:47
+0:02
Half
13.11 mi11:15:151:15:075:443:56
5:46
-0:01
25K
15.53 mi11:29:121:29:045:4413:57
5:45
-0:01
30K
18.64 mi11:47:441:47:365:4618:32
5:58
+0:13
20M
20.00 mi11:55:501:55:425:478:06
5:58
0:00
21M
21.00 mi12:02:092:02:015:496:19
6:19
+0:21
35K
21.75 mi12:06:222:06:145:484:13
5:38
-0:41
23M
23.00 mi12:13:512:13:435:497:29
5:59
+0:21
24M
24.00 mi12:19:342:19:265:495:43
5:43
-0:16
40K
24.85 mi12:24:362:24:285:495:02
5:53
+0:10
25.2M
25.20 mi12:26:472:26:395:492:11
6:20
+0:27
Finish
26.22 mi12:32:362:32:285:495:49
5:42
-0:38

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

5:38 /mi

Average Pace

5:49 /mi

Slowest Pace

6:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:23:58

94% of race

Time at Steady Pace

8:30

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:49 /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 mi10:17:4917:415:4217:41
5:42
#260
10K
6.21 mi10:35:3035:225:4217:41
5:42
#284
15K
9.32 mi10:53:2153:135:4317:51
5:45
#292
20K
12.43 mi11:11:191:11:115:4417:58
5:47
#289
Half
13.11 mi11:15:151:15:075:443:56
5:46
#293
25K
15.53 mi11:29:121:29:045:4413:57
5:45
#282
30K
18.64 mi11:47:441:47:365:4618:32
5:58
#281
20M
20.00 mi11:55:501:55:425:478:06
5:58
#278
21M
21.00 mi12:02:092:02:015:496:19
6:19
#274
35K
21.75 mi12:06:222:06:145:484:13
5:38
#268
23M
23.00 mi12:13:512:13:435:497:29
5:59
#259
24M
24.00 mi12:19:342:19:265:495:43
5:43
#245
40K
24.85 mi12:24:362:24:285:495:02
5:53
#230
25.2M
25.20 mi12:26:472:26:395:492:11
6:20
#230
Finish
26.22 mi12:32:362:32:285:495:49
5:42
#225
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi260260260314(Top 1%)281(Top 2%)281(Top 5%)
10K6.21 mi3.10 mi284-24257+3257+3295(Top 1%)262(Top 2%)262(Top 5%)
15K9.32 mi3.11 mi292-8264-7264-7314(Top 1%)281(Top 2%)281(Top 5%)
20K12.43 mi3.11 mi289+3261+3261+3282(Top 1%)254(Top 2%)254(Top 5%)
Half13.11 mi0.68 mi293-4265-4265-4336(Top 1%)307(Top 2%)307(Top 6%)
25K15.53 mi2.42 mi282+11254+11254+11219(Top 0.8%)196(Top 1%)196(Top 4%)
30K18.64 mi3.11 mi281+1250+4250+4340(Top 1%)313(Top 2%)313(Top 6%)
20M20.00 mi1.36 mi278+3249+1249+1300(Top 1%)275(Top 2%)275(Top 5%)
21M21.00 mi1.00 mi274+4247+2247+2359(Top 1%)330(Top 2%)330(Top 6%)
35K21.75 mi0.75 mi268+6242+5242+5165(Top 0.6%)142(Top 0.9%)142(Top 3%)
23M23.00 mi1.25 mi259+9233+9233+9281(Top 1%)256(Top 2%)256(Top 5%)
24M24.00 mi1.00 mi245+14219+14219+14180(Top 0.7%)157(Top 1%)157(Top 3%)
40K24.85 mi0.85 mi230+15205+14205+14204(Top 0.8%)182(Top 1%)182(Top 3%)
25.2M25.20 mi0.35 mi230205205245(Top 0.9%)225(Top 1%)225(Top 4%)
Finish26.22 mi1.02 mi225+5200+5200+5240(Top 0.9%)223(Top 1%)223(Top 4%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 1%
×21stories
+97ft-345ft

Overall

314

Males

281

M18-39

281

5K→10K

3.1 - 6.2 mi

Top 1%
×5stories
+79ft-138ft

Overall

295

Males

262

M18-39

262

10K→15K

6.2 - 9.3 mi

Top 1%
×3stories
+67ft-78ft

Overall

314

Males

281

M18-39

281

15K→20K

9.3 - 12.4 mi

Top 1%
×5stories
+106ft-86ft

Overall

282

Males

254

M18-39

254

20K→Half

12.4 - 13.1 mi

Top 1%
×2stories
+19ft-37ft

Overall

336

Males

307

M18-39

307

Half→25K

13.1 - 15.5 mi

Top 0.8%
×4stories
+66ft-88ft

Overall

219

Males

196

M18-39

196

25K→30K

15.5 - 18.6 mi

Top 1%
×9stories
+181ft-148ft

Overall

340

Males

313

M18-39

313

30K→20M

18.6 - 20.0 mi

Top 1%
×5stories
+64ft-50ft

Overall

300

Males

275

M18-39

275

20M→21M

20.0 - 21.0 mi

Top 1%
×8stories
+106ft-24ft

Overall

359

Males

330

M18-39

330

21M→35K

21.0 - 21.8 mi

Top 0.6%
×7stories
+17ft-86ft

Overall

165

Males

142

M18-39

142

35K→23M

21.8 - 23.0 mi

Top 1%
×5stories
+23ft-63ft

Overall

281

Males

256

M18-39

256

23M→24M

23.0 - 24.0 mi

Top 0.7%
×6stories
+12ft-82ft

Overall

180

Males

157

M18-39

157

24M→40K

24.0 - 24.9 mi

Top 0.8%
×1story
+6ft-20ft

Overall

204

Males

182

M18-39

182

40K→25.2M

24.9 - 25.2 mi

Top 0.9%
×1story
+13ft-16ft

Overall

245

Males

225

M18-39

225

25.2M→Finish

25.2 - 26.2 mi

Top 0.9%
×2stories
+22ft-21ft

Overall

240

Males

223

M18-39

223

Passing Analysis

Category:
Athletes Passed
129
Passed By
94
Net Change
+35
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#260
5K → 10K1842-24#260#284
10K → 15K513-8#284#292
15K → 20K96+3#292#289
20K → Half26-4#289#293
Half → 25K143+11#293#282
25K → 30K1110+1#282#281
30K → 20M63+3#281#278
20M → 21M106+4#278#274
21M → 35K60+6#274#268
35K → 23M112+9#268#259
23M → 24M151+14#259#245
24M → 40K150+15#245#230
40K → 25.2M110#230#230
25.2M → Finish61+5#230#225
TOTALS12994+35
📊

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