Boston Marathon logo
BOSTON MARATHON 2023

Steven Klug

Bib: 3239•M

VA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 7%
Gender (Male)
#0 / 15176
Top 11%
Division (M18-39)
#0 / 5285
Top 26%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
20:13
Rank: #2307
Start → 5K
20:13 | 6:30/mi
10K· 6.21 mi
40:18
Rank: #2414 (-107)
5K → 10K
20:05 | 6:28/mi
15K· 9.32 mi
1:00:17
Rank: #2368 (+46)
10K → 15K
19:59 | 6:26/mi
20K· 12.43 mi
1:20:07
Rank: #2180 (+188)
15K → 20K
19:50 | 6:23/mi
Half· 13.11 mi
1:24:27
Rank: #2164 (+16)
20K → Half
4:20 | 6:21/mi
25K· 15.53 mi
1:40:02
Rank: #2088 (+76)
Half → 25K
15:35 | 6:26/mi
30K· 18.64 mi
2:00:25
Rank: #2019 (+69)
25K → 30K
20:23 | 6:34/mi
20M
2:09:23
Rank: #1985 (+34)
30K → 20M
8:58 | 6:36/mi
21M
2:16:09
Rank: #1926 (+59)
20M → 21M
6:46 | 6:46/mi
35K· 21.75 mi
2:20:51
Rank: #1901 (+25)
21M → 35K
4:42 | 6:17/mi
23M
2:29:03
Rank: #1850 (+51)
35K → 23M
8:12 | 6:33/mi
24M
2:35:29
Rank: #1831 (+19)
23M → 24M
6:26 | 6:26/mi
40K· 24.85 mi
2:41:01
Rank: #1794 (+37)
24M → 40K
5:32 | 6:28/mi
25.2M
2:43:21
Rank: #1769 (+25)
40K → 25.2M
2:20 | 6:46/mi
Finish· 26.22 mi
2:49:48
Rank: #1746 (+23)
25.2M → Finish
6:27 | 6:20/mi

Course Map & Elevation

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
Time1:24:27
Pace6:27 /mi
2nd Half
Distance13.11 mi
Time1:25:21
Pace6:31 /mi
📊Positive Split: 1.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:3020:136:3020:13
6:30
-
10K
6.21 mi10:41:3540:186:2920:05
6:28
-0:02
15K
9.32 mi11:01:341:00:176:2819:59
6:26
-0:02
20K
12.43 mi11:21:241:20:076:2719:50
6:23
-0:03
Half
13.11 mi11:25:441:24:276:274:20
6:21
-0:02
25K
15.53 mi11:41:191:40:026:2615:35
6:26
+0:05
30K
18.64 mi12:01:422:00:256:2820:23
6:34
+0:08
20M
20.00 mi12:10:402:09:236:288:58
6:36
+0:02
21M
21.00 mi12:17:262:16:096:296:46
6:46
+0:10
35K
21.75 mi12:22:082:20:516:294:42
6:17
-0:29
23M
23.00 mi12:30:202:29:036:298:12
6:33
+0:16
24M
24.00 mi12:36:462:35:296:296:26
6:26
-0:07
40K
24.85 mi12:42:182:41:016:295:32
6:28
+0:02
25.2M
25.20 mi12:44:382:43:216:292:20
6:46
+0:18
Finish
26.22 mi12:51:052:49:486:296:27
6:20
-0:26

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

6:17 /mi

Average Pace

6:29 /mi

Slowest Pace

6:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:31:44

89% of race

Time at Steady Pace

18:04

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:29 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:21:3020:136:3020:13
6:30
#2307
10K
6.21 mi10:41:3540:186:2920:05
6:28
#2414
15K
9.32 mi11:01:341:00:176:2819:59
6:26
#2368
20K
12.43 mi11:21:241:20:076:2719:50
6:23
#2180
Half
13.11 mi11:25:441:24:276:274:20
6:21
#2164
25K
15.53 mi11:41:191:40:026:2615:35
6:26
#2088
30K
18.64 mi12:01:422:00:256:2820:23
6:34
#2019
20M
20.00 mi12:10:402:09:236:288:58
6:36
#1985
21M
21.00 mi12:17:262:16:096:296:46
6:46
#1926
35K
21.75 mi12:22:082:20:516:294:42
6:17
#1901
23M
23.00 mi12:30:202:29:036:298:12
6:33
#1850
24M
24.00 mi12:36:462:35:296:296:26
6:26
#1831
40K
24.85 mi12:42:182:41:016:295:32
6:28
#1794
25.2M
25.20 mi12:44:382:43:216:292:20
6:46
#1769
Finish
26.22 mi12:51:052:49:486:296:27
6:20
#1746
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2307219921992257(Top 8%)2166(Top 14%)2166(Top 41%)
10K6.21 mi3.10 mi2414-1072305-1062305-1062576(Top 10%)2462(Top 16%)2462(Top 47%)
15K9.32 mi3.11 mi2368+462267+382267+382257(Top 8%)2166(Top 14%)2166(Top 41%)
20K12.43 mi3.11 mi2180+1882088+1792088+1791727(Top 6%)1653(Top 11%)1653(Top 31%)
Half13.11 mi0.68 mi2164+162073+152073+151980(Top 7%)1903(Top 13%)1903(Top 36%)
25K15.53 mi2.42 mi2088+762003+702003+701827(Top 7%)1750(Top 12%)1750(Top 33%)
30K18.64 mi3.11 mi2019+691936+671936+671801(Top 7%)1724(Top 11%)1724(Top 33%)
20M20.00 mi1.36 mi1985+341901+351901+351836(Top 7%)1749(Top 12%)1749(Top 33%)
21M21.00 mi1.00 mi1926+591843+581843+581311(Top 5%)1252(Top 8%)1252(Top 24%)
35K21.75 mi0.75 mi1901+251820+231820+231517(Top 6%)1441(Top 9%)1441(Top 27%)
23M23.00 mi1.25 mi1850+511770+501770+501605(Top 6%)1525(Top 10%)1525(Top 29%)
24M24.00 mi1.00 mi1831+191751+191751+191803(Top 7%)1699(Top 11%)1699(Top 32%)
40K24.85 mi0.85 mi1794+371716+351716+351442(Top 5%)1361(Top 9%)1361(Top 26%)
25.2M25.20 mi0.35 mi1769+251690+261690+261085(Top 4%)1032(Top 7%)1032(Top 20%)
Finish26.22 mi1.02 mi1746+231667+231667+231729(Top 6%)1625(Top 11%)1625(Top 31%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 8%
×21stories
+97ft-345ft

Overall

2257

Males

2166

M18-39

2166

5K→10K

3.1 - 6.2 mi

Top 10%
×5stories
+79ft-138ft

Overall

2576

Males

2462

M18-39

2462

10K→15K

6.2 - 9.3 mi

Top 8%
×3stories
+67ft-78ft

Overall

2257

Males

2166

M18-39

2166

15K→20K

9.3 - 12.4 mi

Top 6%
×5stories
+106ft-86ft

Overall

1727

Males

1653

M18-39

1653

20K→Half

12.4 - 13.1 mi

Top 7%
×2stories
+19ft-37ft

Overall

1980

Males

1903

M18-39

1903

Half→25K

13.1 - 15.5 mi

Top 7%
×4stories
+66ft-88ft

Overall

1827

Males

1750

M18-39

1750

25K→30K

15.5 - 18.6 mi

Top 7%
×9stories
+181ft-148ft

Overall

1801

Males

1724

M18-39

1724

30K→20M

18.6 - 20.0 mi

Top 7%
×5stories
+64ft-50ft

Overall

1836

Males

1749

M18-39

1749

20M→21M

20.0 - 21.0 mi

Top 5%
×8stories
+106ft-24ft

Overall

1311

Males

1252

M18-39

1252

21M→35K

21.0 - 21.8 mi

Top 6%
×7stories
+17ft-86ft

Overall

1517

Males

1441

M18-39

1441

35K→23M

21.8 - 23.0 mi

Top 6%
×5stories
+23ft-63ft

Overall

1605

Males

1525

M18-39

1525

23M→24M

23.0 - 24.0 mi

Top 7%
×6stories
+12ft-82ft

Overall

1803

Males

1699

M18-39

1699

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1442

Males

1361

M18-39

1361

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

1085

Males

1032

M18-39

1032

25.2M→Finish

25.2 - 26.2 mi

Top 6%
×2stories
+22ft-21ft

Overall

1729

Males

1625

M18-39

1625

Passing Analysis

Category:
Athletes Passed
942
Passed By
381
Net Change
+561
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2307
5K → 10K76183-107#2307#2414
10K → 15K10155+46#2414#2368
15K → 20K1913+188#2368#2180
20K → Half215+16#2180#2164
Half → 25K859+76#2164#2088
25K → 30K10334+69#2088#2019
30K → 20M5723+34#2019#1985
20M → 21M7112+59#1985#1926
21M → 35K294+25#1926#1901
35K → 23M587+51#1901#1850
23M → 24M3213+19#1850#1831
24M → 40K447+37#1831#1794
40K → 25.2M316+25#1794#1769
25.2M → Finish4320+23#1769#1746
TOTALS942381+561
📊

Passing Visuals

Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

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