Boston Marathon logo
BOSTON MARATHON 2023

Jochen Zehfuss

Bib: 6393•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 19%
Gender (Male)
#0 / 15176
Top 31%
Masters (Masters Men)
#0 / 9891
Top 17%
Division (M50-54)
#0 / 2052
Top 12%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:20
Rank: #5278
Start → 5K
21:20 | 6:52/mi
10K· 6.21 mi
42:30
Rank: #5312 (-34)
5K → 10K
21:10 | 6:49/mi
15K· 9.32 mi
1:03:32
Rank: #5147 (+165)
10K → 15K
21:02 | 6:46/mi
20K· 12.43 mi
1:24:51
Rank: #5106 (+41)
15K → 20K
21:19 | 6:52/mi
Half· 13.11 mi
1:29:41
Rank: #5271 (-165)
20K → Half
4:50 | 7:05/mi
25K· 15.53 mi
1:46:37
Rank: #5309 (-38)
Half → 25K
16:56 | 6:59/mi
30K· 18.64 mi
2:08:47
Rank: #5244 (+65)
25K → 30K
22:10 | 7:08/mi
20M
2:18:35
Rank: #5222 (+22)
30K → 20M
9:48 | 7:13/mi
21M
2:26:27
Rank: #5239 (-17)
20M → 21M
7:52 | 7:52/mi
35K· 21.75 mi
2:31:42
Rank: #5223 (+16)
21M → 35K
5:15 | 7:01/mi
23M
2:40:45
Rank: #5164 (+59)
35K → 23M
9:03 | 7:14/mi
24M
2:47:56
Rank: #5127 (+37)
23M → 24M
7:11 | 7:11/mi
40K· 24.85 mi
2:54:17
Rank: #5117 (+10)
24M → 40K
6:21 | 7:26/mi
25.2M
2:57:06
Rank: #5129 (-12)
40K → 25.2M
2:49 | 8:10/mi
Finish· 26.22 mi
3:04:34
Rank: #5166 (-37)
25.2M → Finish
7:28 | 7:20/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
Time1:29:41
Pace6:50 /mi
2nd Half
Distance13.11 mi
Time1:34:53
Pace7:14 /mi
📊Positive Split: 5.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:1721:206:5221:20
6:52
-
10K
6.21 mi10:46:2742:306:5021:10
6:49
-0:03
15K
9.32 mi11:07:291:03:326:4921:02
6:46
-0:03
20K
12.43 mi11:28:481:24:516:5021:19
6:52
+0:06
Half
13.11 mi11:33:381:29:416:504:50
7:05
+0:13
25K
15.53 mi11:50:341:46:376:5216:56
6:59
-0:06
30K
18.64 mi12:12:442:08:476:5522:10
7:08
+0:09
20M
20.00 mi12:22:322:18:356:569:48
7:13
+0:05
21M
21.00 mi12:30:242:26:276:587:52
7:52
+0:39
35K
21.75 mi12:35:392:31:426:595:15
7:01
-0:51
23M
23.00 mi12:44:422:40:456:599:03
7:14
+0:13
24M
24.00 mi12:51:532:47:567:007:11
7:11
-0:03
40K
24.85 mi12:58:142:54:177:016:21
7:26
+0:15
25.2M
25.20 mi13:01:032:57:067:022:49
8:10
+0:44
Finish
26.22 mi13:08:313:04:347:037:28
7:20
-0:50

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

6:46 /mi

Average Pace

7:03 /mi

Slowest Pace

8:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:24:51

46% of race

Time at Steady Pace

1:15:13

41% of race

Time at Slower Pace

24:30

13% of race

Average Pace: 7:02 /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 mi10:25:1721:206:5221:20
6:52
#5278
10K
6.21 mi10:46:2742:306:5021:10
6:49
#5312
15K
9.32 mi11:07:291:03:326:4921:02
6:46
#5147
20K
12.43 mi11:28:481:24:516:5021:19
6:52
#5106
Half
13.11 mi11:33:381:29:416:504:50
7:05
#5271
25K
15.53 mi11:50:341:46:376:5216:56
6:59
#5309
30K
18.64 mi12:12:442:08:476:5522:10
7:08
#5244
20M
20.00 mi12:22:322:18:356:569:48
7:13
#5222
21M
21.00 mi12:30:242:26:276:587:52
7:52
#5239
35K
21.75 mi12:35:392:31:426:595:15
7:01
#5223
23M
23.00 mi12:44:422:40:456:599:03
7:14
#5164
24M
24.00 mi12:51:532:47:567:007:11
7:11
#5127
40K
24.85 mi12:58:142:54:177:016:21
7:26
#5117
25.2M
25.20 mi13:01:032:57:067:022:49
8:10
#5129
Finish
26.22 mi13:08:313:04:347:037:28
7:20
#5166
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi5278488548854819(Top 18%)4490(Top 30%)4490(Top 219%)
10K6.21 mi3.10 mi5312-344912-274912-275412(Top 20%)4989(Top 33%)4989(Top 243%)
15K9.32 mi3.11 mi5147+1654773+1394773+1394819(Top 18%)4490(Top 30%)4490(Top 219%)
20K12.43 mi3.11 mi5106+414738+354738+355018(Top 19%)4651(Top 31%)4651(Top 227%)
Half13.11 mi0.68 mi5271-1654881-1434881-1436992(Top 26%)6209(Top 41%)6209(Top 303%)
25K15.53 mi2.42 mi5309-384914-334914-335475(Top 21%)5040(Top 33%)5040(Top 246%)
30K18.64 mi3.11 mi5244+654851+634851+635112(Top 19%)4691(Top 31%)4691(Top 229%)
20M20.00 mi1.36 mi5222+224826+254826+255155(Top 19%)4662(Top 31%)4662(Top 227%)
21M21.00 mi1.00 mi5239-174833-74833-76507(Top 24%)5545(Top 37%)5545(Top 270%)
35K21.75 mi0.75 mi5223+164810+234810+235417(Top 20%)4813(Top 32%)4813(Top 235%)
23M23.00 mi1.25 mi5164+594746+644746+644935(Top 19%)4418(Top 29%)4418(Top 215%)
24M24.00 mi1.00 mi5127+374713+334713+335626(Top 21%)4858(Top 32%)4858(Top 237%)
40K24.85 mi0.85 mi5117+104700+134700+136211(Top 23%)5146(Top 34%)5146(Top 251%)
25.2M25.20 mi0.35 mi5129-124709-94709-97400(Top 28%)5800(Top 38%)5800(Top 283%)
Finish26.22 mi1.02 mi5166-374730-214730-217261(Top 27%)5716(Top 38%)5716(Top 279%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21stories
+97ft-345ft

Overall

4819

Males

4490

M50-54

4490

5K→10K

3.1 - 6.2 mi

Top 20%
×5stories
+79ft-138ft

Overall

5412

Males

4989

M50-54

4989

10K→15K

6.2 - 9.3 mi

Top 18%
×3stories
+67ft-78ft

Overall

4819

Males

4490

M50-54

4490

15K→20K

9.3 - 12.4 mi

Top 19%
×5stories
+106ft-86ft

Overall

5018

Males

4651

M50-54

4651

20K→Half

12.4 - 13.1 mi

Top 26%
×2stories
+19ft-37ft

Overall

6992

Males

6209

M50-54

6209

Half→25K

13.1 - 15.5 mi

Top 21%
×4stories
+66ft-88ft

Overall

5475

Males

5040

M50-54

5040

25K→30K

15.5 - 18.6 mi

Top 19%
×9stories
+181ft-148ft

Overall

5112

Males

4691

M50-54

4691

30K→20M

18.6 - 20.0 mi

Top 19%
×5stories
+64ft-50ft

Overall

5155

Males

4662

M50-54

4662

20M→21M

20.0 - 21.0 mi

Top 24%
×8stories
+106ft-24ft

Overall

6507

Males

5545

M50-54

5545

21M→35K

21.0 - 21.8 mi

Top 20%
×7stories
+17ft-86ft

Overall

5417

Males

4813

M50-54

4813

35K→23M

21.8 - 23.0 mi

Top 19%
×5stories
+23ft-63ft

Overall

4935

Males

4418

M50-54

4418

23M→24M

23.0 - 24.0 mi

Top 21%
×6stories
+12ft-82ft

Overall

5626

Males

4858

M50-54

4858

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

6211

Males

5146

M50-54

5146

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

7400

Males

5800

M50-54

5800

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2stories
+22ft-21ft

Overall

7261

Males

5716

M50-54

5716

Passing Analysis

Category:
Athletes Passed
1196
Passed By
1084
Net Change
+112
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5278
5K → 10K188222-34#5278#5312
10K → 15K20944+165#5312#5147
15K → 20K13291+41#5147#5106
20K → Half2167-165#5106#5271
Half → 25K79117-38#5271#5309
25K → 30K16196+65#5309#5244
30K → 20M7755+22#5244#5222
20M → 21M4865-17#5222#5239
21M → 35K4630+16#5239#5223
35K → 23M9132+59#5223#5164
23M → 24M7235+37#5164#5127
24M → 40K4636+10#5127#5117
40K → 25.2M1527-12#5117#5129
25.2M → Finish3067-37#5129#5166
TOTALS11961084+112
📊

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