Boston Marathon logo
BOSTON MARATHON 2023

Steve Koester

Bib: 7394•M

IL

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 30%
Gender (Male)
#0 / 15176
Top 44%
Masters (Masters Men)
#0 / 9891
Top 32%
Division (M55-59)
#0 / 1422
Top 13%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:16
Rank: #7307
Start → 5K
22:16 | 7:10/mi
10K· 6.21 mi
44:40
Rank: #7679 (-372)
5K → 10K
22:24 | 7:13/mi
15K· 9.32 mi
1:07:11
Rank: #7801 (-122)
10K → 15K
22:31 | 7:15/mi
20K· 12.43 mi
1:29:56
Rank: #7807 (-6)
15K → 20K
22:45 | 7:19/mi
Half· 13.11 mi
1:34:52
Rank: #7807
20K → Half
4:56 | 7:14/mi
25K· 15.53 mi
1:52:42
Rank: #7755 (+52)
Half → 25K
17:50 | 7:21/mi
30K· 18.64 mi
2:16:02
Rank: #7627 (+128)
25K → 30K
23:20 | 7:31/mi
20M
2:26:24
Rank: #7581 (+46)
30K → 20M
10:22 | 7:38/mi
21M
2:34:28
Rank: #7563 (+18)
20M → 21M
8:04 | 8:04/mi
35K· 21.75 mi
2:40:12
Rank: #7599 (-36)
21M → 35K
5:44 | 7:40/mi
23M
2:50:10
Rank: #7674 (-75)
35K → 23M
9:58 | 7:58/mi
24M
2:58:13
Rank: #7841 (-167)
23M → 24M
8:03 | 8:03/mi
40K· 24.85 mi
3:05:02
Rank: #7888 (-47)
24M → 40K
6:49 | 7:58/mi
25.2M
3:07:58
Rank: #7895 (-7)
40K → 25.2M
2:56 | 8:30/mi
Finish· 26.22 mi
3:15:56
Rank: #7994 (-99)
25.2M → Finish
7:58 | 7:49/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
Time1:34:52
Pace7:14 /mi
2nd Half
Distance13.11 mi
Time1:41:04
Pace7:43 /mi
📊Positive Split: 6.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:2222:167:1022:16
7:10
-
10K
6.21 mi10:48:4644:407:1122:24
7:13
+0:03
15K
9.32 mi11:11:171:07:117:1222:31
7:15
+0:02
20K
12.43 mi11:34:021:29:567:1422:45
7:19
+0:04
Half
13.11 mi11:38:581:34:527:144:56
7:14
-0:05
25K
15.53 mi11:56:481:52:427:1517:50
7:21
+0:07
30K
18.64 mi12:20:082:16:027:1823:20
7:31
+0:10
20M
20.00 mi12:30:302:26:247:1910:22
7:38
+0:07
21M
21.00 mi12:38:342:34:287:218:04
8:04
+0:26
35K
21.75 mi12:44:182:40:127:225:44
7:40
-0:24
23M
23.00 mi12:54:162:50:107:249:58
7:58
+0:18
24M
24.00 mi13:02:192:58:137:268:03
8:03
+0:05
40K
24.85 mi13:09:083:05:027:276:49
7:58
-0:05
25.2M
25.20 mi13:12:043:07:587:282:56
8:30
+0:32
Finish
26.22 mi13:20:023:15:567:297:58
7:49
-0:41

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

7:10 /mi

Average Pace

7:29 /mi

Slowest Pace

8:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:40:06

82% of race

Time at Steady Pace

32:54

17% of race

Time at Slower Pace

2:56

1% of race

Average Pace: 7:28 /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 mi10:26:2222:167:1022:16
7:10
#7307
10K
6.21 mi10:48:4644:407:1122:24
7:13
#7679
15K
9.32 mi11:11:171:07:117:1222:31
7:15
#7801
20K
12.43 mi11:34:021:29:567:1422:45
7:19
#7807
Half
13.11 mi11:38:581:34:527:144:56
7:14
#7807
25K
15.53 mi11:56:481:52:427:1517:50
7:21
#7755
30K
18.64 mi12:20:082:16:027:1823:20
7:31
#7627
20M
20.00 mi12:30:302:26:247:1910:22
7:38
#7581
21M
21.00 mi12:38:342:34:287:218:04
8:04
#7563
35K
21.75 mi12:44:182:40:127:225:44
7:40
#7599
23M
23.00 mi12:54:162:50:107:249:58
7:58
#7674
24M
24.00 mi13:02:192:58:137:268:03
8:03
#7841
40K
24.85 mi13:09:083:05:027:276:49
7:58
#7888
25.2M
25.20 mi13:12:043:07:587:282:56
8:30
#7895
Finish
26.22 mi13:20:023:15:567:297:58
7:49
#7994
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi7307650565058126(Top 31%)7002(Top 46%)7002(Top 492%)
10K6.21 mi3.10 mi7679-3726756-2516756-2518162(Top 31%)7052(Top 46%)7052(Top 496%)
15K9.32 mi3.11 mi7801-1226827-716827-718126(Top 31%)7002(Top 46%)7002(Top 492%)
20K12.43 mi3.11 mi7807-66814+136814+137943(Top 30%)6849(Top 45%)6849(Top 482%)
Half13.11 mi0.68 mi78076811+36811+38065(Top 30%)6937(Top 46%)6937(Top 488%)
25K15.53 mi2.42 mi7755+526759+526759+527657(Top 29%)6581(Top 43%)6581(Top 463%)
30K18.64 mi3.11 mi7627+1286647+1126647+1127287(Top 27%)6253(Top 41%)6253(Top 440%)
20M20.00 mi1.36 mi7581+466585+626585+627670(Top 29%)6386(Top 42%)6386(Top 449%)
21M21.00 mi1.00 mi7563+186559+266559+267770(Top 29%)6353(Top 42%)6353(Top 447%)
35K21.75 mi0.75 mi7599-366577-186577-189650(Top 36%)7422(Top 49%)7422(Top 522%)
23M23.00 mi1.25 mi7674-756609-326609-329452(Top 36%)7198(Top 47%)7198(Top 506%)
24M24.00 mi1.00 mi7841-1676684-756684-7511538(Top 43%)8161(Top 54%)8161(Top 574%)
40K24.85 mi0.85 mi7888-476697-136697-139829(Top 37%)7245(Top 48%)7245(Top 509%)
25.2M25.20 mi0.35 mi7895-7669766979472(Top 36%)6998(Top 46%)6998(Top 492%)
Finish26.22 mi1.02 mi7994-996735-386735-3810763(Top 40%)7674(Top 51%)7674(Top 540%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 31%
×21stories
+97ft-345ft

Overall

8126

Males

7002

M55-59

7002

5K→10K

3.1 - 6.2 mi

Top 31%
×5stories
+79ft-138ft

Overall

8162

Males

7052

M55-59

7052

10K→15K

6.2 - 9.3 mi

Top 31%
×3stories
+67ft-78ft

Overall

8126

Males

7002

M55-59

7002

15K→20K

9.3 - 12.4 mi

Top 30%
×5stories
+106ft-86ft

Overall

7943

Males

6849

M55-59

6849

20K→Half

12.4 - 13.1 mi

Top 30%
×2stories
+19ft-37ft

Overall

8065

Males

6937

M55-59

6937

Half→25K

13.1 - 15.5 mi

Top 29%
×4stories
+66ft-88ft

Overall

7657

Males

6581

M55-59

6581

25K→30K

15.5 - 18.6 mi

Top 27%
×9stories
+181ft-148ft

Overall

7287

Males

6253

M55-59

6253

30K→20M

18.6 - 20.0 mi

Top 29%
×5stories
+64ft-50ft

Overall

7670

Males

6386

M55-59

6386

20M→21M

20.0 - 21.0 mi

Top 29%
×8stories
+106ft-24ft

Overall

7770

Males

6353

M55-59

6353

21M→35K

21.0 - 21.8 mi

Top 36%
×7stories
+17ft-86ft

Overall

9650

Males

7422

M55-59

7422

35K→23M

21.8 - 23.0 mi

Top 36%
×5stories
+23ft-63ft

Overall

9452

Males

7198

M55-59

7198

23M→24M

23.0 - 24.0 mi

Top 43%
×6stories
+12ft-82ft

Overall

11538

Males

8161

M55-59

8161

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

9829

Males

7245

M55-59

7245

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

9472

Males

6998

M55-59

6998

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2stories
+22ft-21ft

Overall

10763

Males

7674

M55-59

7674

Passing Analysis

Category:
Athletes Passed
1012
Passed By
1699
Net Change
-687
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7307
5K → 10K97469-372#7307#7679
10K → 15K89211-122#7679#7801
15K → 20K112118-6#7801#7807
20K → Half24240#7807#7807
Half → 25K11967+52#7807#7755
25K → 30K19264+128#7755#7627
30K → 20M9246+46#7627#7581
20M → 21M6951+18#7581#7563
21M → 35K2965-36#7563#7599
35K → 23M54129-75#7599#7674
23M → 24M34201-167#7674#7841
24M → 40K4592-47#7841#7888
40K → 25.2M1926-7#7888#7895
25.2M → Finish37136-99#7895#7994
TOTALS10121699-687
📊

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