Boston Marathon logo
BOSTON MARATHON 2023

Andrew Schaeffer

Bib: 1716•M

CO

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 2%
Gender (Male)
#0 / 15176
Top 4%
Division (M18-39)
#0 / 5285
Top 10%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:15
Rank: #1115
Start → 5K
19:15 | 6:12/mi
10K· 6.21 mi
37:47
Rank: #913 (+202)
5K → 10K
18:32 | 5:58/mi
15K· 9.32 mi
57:05
Rank: #1021 (-108)
10K → 15K
19:18 | 6:13/mi
20K· 12.43 mi
1:16:44
Rank: #1084 (-63)
15K → 20K
19:39 | 6:19/mi
Half· 13.11 mi
1:20:57
Rank: #1099 (-15)
20K → Half
4:13 | 6:11/mi
25K· 15.53 mi
1:35:51
Rank: #1044 (+55)
Half → 25K
14:54 | 6:09/mi
30K· 18.64 mi
1:54:44
Rank: #906 (+138)
25K → 30K
18:53 | 6:05/mi
20M
2:02:49
Rank: #832 (+74)
30K → 20M
8:05 | 5:57/mi
21M
2:09:03
Rank: #791 (+41)
20M → 21M
6:14 | 6:14/mi
35K· 21.75 mi
2:13:19
Rank: #763 (+28)
21M → 35K
4:16 | 5:42/mi
23M
2:20:53
Rank: #729 (+34)
35K → 23M
7:34 | 6:03/mi
24M
2:26:52
Rank: #701 (+28)
23M → 24M
5:59 | 5:59/mi
40K· 24.85 mi
2:32:05
Rank: #681 (+20)
24M → 40K
5:13 | 6:06/mi
25.2M
2:34:18
Rank: #667 (+14)
40K → 25.2M
2:13 | 6:26/mi
Finish· 26.22 mi
2:39:56
Rank: #627 (+40)
25.2M → Finish
5:38 | 5:32/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 Half
Distance13.11 mi
Time1:20:57
Pace6:10 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:18:59
Pace6:02 /mi
📊Negative Split: 2.4% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:2019:156:1219:15
6:12
-
10K
6.21 mi10:39:5237:476:0518:32
5:58
-0:14
15K
9.32 mi10:59:1057:056:0719:18
6:13
+0:15
20K
12.43 mi11:18:491:16:446:1019:39
6:19
+0:06
Half
13.11 mi11:23:021:20:576:104:13
6:11
-0:08
25K
15.53 mi11:37:561:35:516:1014:54
6:09
-0:02
30K
18.64 mi11:56:491:54:446:0918:53
6:05
-0:04
20M
20.00 mi12:04:542:02:496:088:05
5:57
-0:08
21M
21.00 mi12:11:082:09:036:096:14
6:14
+0:17
35K
21.75 mi12:15:242:13:196:084:16
5:42
-0:32
23M
23.00 mi12:22:582:20:536:087:34
6:03
+0:21
24M
24.00 mi12:28:572:26:526:075:59
5:59
-0:04
40K
24.85 mi12:34:102:32:056:075:13
6:06
+0:07
25.2M
25.20 mi12:36:232:34:186:072:13
6:26
+0:20
Finish
26.22 mi12:42:012:39:566:065:38
5:32
-0:54

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

5:32 /mi

Average Pace

6:06 /mi

Slowest Pace

6:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:08:57

43% of race

Time at Steady Pace

1:30:59

57% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:06 /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 mi10:21:2019:156:1219:15
6:12
#1115
10K
6.21 mi10:39:5237:476:0518:32
5:58
#913
15K
9.32 mi10:59:1057:056:0719:18
6:13
#1021
20K
12.43 mi11:18:491:16:446:1019:39
6:19
#1084
Half
13.11 mi11:23:021:20:576:104:13
6:11
#1099
25K
15.53 mi11:37:561:35:516:1014:54
6:09
#1044
30K
18.64 mi11:56:491:54:446:0918:53
6:05
#906
20M
20.00 mi12:04:542:02:496:088:05
5:57
#832
21M
21.00 mi12:11:082:09:036:096:14
6:14
#791
35K
21.75 mi12:15:242:13:196:084:16
5:42
#763
23M
23.00 mi12:22:582:20:536:087:34
6:03
#729
24M
24.00 mi12:28:572:26:526:075:59
5:59
#701
40K
24.85 mi12:34:102:32:056:075:13
6:06
#681
25.2M
25.20 mi12:36:232:34:186:072:13
6:26
#667
Finish
26.22 mi12:42:012:39:566:065:38
5:32
#627
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1115105310531275(Top 5%)1213(Top 8%)1213(Top 23%)
10K6.21 mi3.10 mi913+202862+191862+191723(Top 3%)679(Top 4%)679(Top 13%)
15K9.32 mi3.11 mi1021-108968-106968-1061275(Top 5%)1213(Top 8%)1213(Top 23%)
20K12.43 mi3.11 mi1084-631029-611029-611482(Top 6%)1416(Top 9%)1416(Top 27%)
Half13.11 mi0.68 mi1099-151044-151044-151237(Top 5%)1185(Top 8%)1185(Top 22%)
25K15.53 mi2.42 mi1044+55992+52992+52844(Top 3%)799(Top 5%)799(Top 15%)
30K18.64 mi3.11 mi906+138858+134858+134482(Top 2%)450(Top 3%)450(Top 9%)
20M20.00 mi1.36 mi832+74787+71787+71296(Top 1%)271(Top 2%)271(Top 5%)
21M21.00 mi1.00 mi791+41748+39748+39283(Top 1%)259(Top 2%)259(Top 5%)
35K21.75 mi0.75 mi763+28720+28720+28242(Top 0.9%)219(Top 1%)219(Top 4%)
23M23.00 mi1.25 mi729+34687+33687+33363(Top 1%)337(Top 2%)337(Top 6%)
24M24.00 mi1.00 mi701+28660+27660+27512(Top 2%)483(Top 3%)483(Top 9%)
40K24.85 mi0.85 mi681+20640+20640+20486(Top 2%)457(Top 3%)457(Top 9%)
25.2M25.20 mi0.35 mi667+14626+14626+14398(Top 1%)376(Top 2%)376(Top 7%)
Finish26.22 mi1.02 mi627+40587+39587+39109(Top 0.4%)96(Top 0.6%)96(Top 2%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21stories
+97ft-345ft

Overall

1275

Males

1213

M18-39

1213

5K→10K

3.1 - 6.2 mi

Top 3%
×5stories
+79ft-138ft

Overall

723

Males

679

M18-39

679

10K→15K

6.2 - 9.3 mi

Top 5%
×3stories
+67ft-78ft

Overall

1275

Males

1213

M18-39

1213

15K→20K

9.3 - 12.4 mi

Top 6%
×5stories
+106ft-86ft

Overall

1482

Males

1416

M18-39

1416

20K→Half

12.4 - 13.1 mi

Top 5%
×2stories
+19ft-37ft

Overall

1237

Males

1185

M18-39

1185

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

844

Males

799

M18-39

799

25K→30K

15.5 - 18.6 mi

Top 2%
×9stories
+181ft-148ft

Overall

482

Males

450

M18-39

450

30K→20M

18.6 - 20.0 mi

Top 1%
×5stories
+64ft-50ft

Overall

296

Males

271

M18-39

271

20M→21M

20.0 - 21.0 mi

Top 1%
×8stories
+106ft-24ft

Overall

283

Males

259

M18-39

259

21M→35K

21.0 - 21.8 mi

Top 0.9%
×7stories
+17ft-86ft

Overall

242

Males

219

M18-39

219

35K→23M

21.8 - 23.0 mi

Top 1%
×5stories
+23ft-63ft

Overall

363

Males

337

M18-39

337

23M→24M

23.0 - 24.0 mi

Top 2%
×6stories
+12ft-82ft

Overall

512

Males

483

M18-39

483

24M→40K

24.0 - 24.9 mi

Top 2%
×1story
+6ft-20ft

Overall

486

Males

457

M18-39

457

40K→25.2M

24.9 - 25.2 mi

Top 1%
×1story
+13ft-16ft

Overall

398

Males

376

M18-39

376

25.2M→Finish

25.2 - 26.2 mi

Top 0.4%
×2stories
+22ft-21ft

Overall

109

Males

96

M18-39

96

Passing Analysis

Category:
Athletes Passed
708
Passed By
220
Net Change
+488
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1115
5K → 10K2075+202#1115#913
10K → 15K7115-108#913#1021
15K → 20K1174-63#1021#1084
20K → Half015-15#1084#1099
Half → 25K572+55#1099#1044
25K → 30K1391+138#1044#906
30K → 20M740+74#906#832
20M → 21M410+41#832#791
21M → 35K291+28#791#763
35K → 23M362+34#763#729
23M → 24M313+28#729#701
24M → 40K211+20#701#681
40K → 25.2M151+14#681#667
25.2M → Finish400+40#667#627
TOTALS708220+488
📊

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