Boston Marathon logo
BOSTON MARATHON 2023

Emerson Badessa

Bib: 25695•M

RI

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

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
9:26/mi
29:17
↑ 97↓ 3451.5%
10K· 6.21 mi
9:01/mi
57:17
↑ 79↓ 1380.4%
15K· 9.32 mi
9:18/mi
1:26:12
↑ 67↓ 78
20K· 12.43 mi
10:27/mi
1:58:41
↑ 106↓ 860.1%
Half· 13.11 mi
10:17/mi
2:05:42
↑ 19↓ 370.5%
25K· 15.53 mi
13:16/mi
2:37:53
↑ 66↓ 880.2%
30K· 18.64 mi
13:56/mi
3:21:09
↑ 181↓ 1480.2%
20M
14:26/mi
3:40:46
↑ 64↓ 500.2%
21M
13:46/mi
3:54:32
↑ 106↓ 241.6%
35K· 21.75 mi
14:03/mi
4:05:03
↑ 17↓ 861.7%
23M
13:11/mi
4:21:33
↑ 23↓ 630.6%
24M
12:49/mi
4:34:22
↓ 821.3%
40K· 24.85 mi
13:42/mi
4:46:05
↓ 200.3%
25.2M
14:15/mi
4:51:00
↑ 13↓ 160.2%
Finish· 26.22 mi
12:47/mi
5:04:02
↑ 22↓ 21

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
Time2:05:42
Pace9:35 /mi
2nd Half
Distance13.11 mi
Time2:58:20
Pace13:36 /mi
📊Positive Split: 41.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:2629:179:2629:17
9:26
-
10K
6.21 mi12:13:2657:179:1328:00
9:01
-0:25
15K
9.32 mi12:42:211:26:129:1528:55
9:18
+0:17
20K
12.43 mi13:14:501:58:419:3332:29
10:27
+1:09
Half
13.11 mi13:21:512:05:429:357:01
10:17
-0:10
25K
15.53 mi13:54:022:37:5310:1032:11
13:16
+2:59
30K
18.64 mi14:37:183:21:0910:4743:16
13:56
+0:40
20M
20.00 mi14:56:553:40:4611:0219:37
14:26
+0:30
21M
21.00 mi15:10:413:54:3211:1013:46
13:46
-0:40
35K
21.75 mi15:21:124:05:0311:1610:31
14:03
+0:17
23M
23.00 mi15:37:424:21:3311:2216:30
13:11
-0:52
24M
24.00 mi15:50:314:34:2211:2612:49
12:49
-0:22
40K
24.85 mi16:02:144:46:0511:3111:43
13:42
+0:53
25.2M
25.20 mi16:07:094:51:0011:334:55
14:15
+0:33
Finish
26.22 mi16:20:115:04:0211:3613:02
12:47
-1:28

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

9:01 /mi

Average Pace

11:36 /mi

Slowest Pace

14:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:05:42

41% of race

Time at Steady Pace

2:33:48

51% of race

Time at Slower Pace

24:32

8% of race

Average Pace: 11:36 /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 mi11:45:2629:179:2629:17
9:26
#21865
10K
6.21 mi12:13:2657:179:1328:00
9:01
#21468
15K
9.32 mi12:42:211:26:129:1528:55
9:18
#21527
20K
12.43 mi13:14:501:58:419:3332:29
10:27
#22261
Half
13.11 mi13:21:512:05:429:357:01
10:17
#22370
25K
15.53 mi13:54:022:37:5310:1032:11
13:16
#23534
30K
18.64 mi14:37:183:21:0910:4743:16
13:56
#24341
20M
20.00 mi14:56:553:40:4611:0219:37
14:26
#24589
21M
21.00 mi15:10:413:54:3211:1013:46
13:46
#24644
35K
21.75 mi15:21:124:05:0311:1610:31
14:03
#24753
23M
23.00 mi15:37:424:21:3311:2216:30
13:11
#24814
24M
24.00 mi15:50:314:34:2211:2612:49
12:49
#24859
40K
24.85 mi16:02:144:46:0511:3111:43
13:42
#24917
25.2M
25.20 mi16:07:094:51:0011:334:55
14:15
#24948
Finish
26.22 mi16:20:115:04:0211:3613:02
12:47
#25005
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi21865130261302621657(Top 81%)13051(Top 86%)13051(Top 247%)
10K6.21 mi3.10 mi21468+39712881+14512881+14520929(Top 79%)12692(Top 84%)12692(Top 240%)
15K9.32 mi3.11 mi21527-5912934-5312934-5321657(Top 81%)13051(Top 86%)13051(Top 247%)
20K12.43 mi3.11 mi22261-73413273-33913273-33923763(Top 89%)13959(Top 92%)13959(Top 264%)
Half13.11 mi0.68 mi22370-10913337-6413337-6423820(Top 89%)13987(Top 92%)13987(Top 265%)
25K15.53 mi2.42 mi23534-116413869-53213869-53226008(Top 98%)14902(Top 98%)14902(Top 282%)
30K18.64 mi3.11 mi24341-80714201-33214201-33225994(Top 98%)14872(Top 98%)14872(Top 281%)
20M20.00 mi1.36 mi24589-24814303-10214303-10226069(Top 98%)14883(Top 98%)14883(Top 282%)
21M21.00 mi1.00 mi24644-5514326-2314326-2324840(Top 93%)14296(Top 94%)14296(Top 271%)
35K21.75 mi0.75 mi24753-10914364-3814364-3826151(Top 98%)14927(Top 98%)14927(Top 282%)
23M23.00 mi1.25 mi24814-6114378-1414378-1425254(Top 95%)14462(Top 95%)14462(Top 274%)
24M24.00 mi1.00 mi24859-4514390-1214390-1225342(Top 95%)14473(Top 95%)14473(Top 274%)
40K24.85 mi0.85 mi24917-5814408-1814408-1825501(Top 96%)14556(Top 96%)14556(Top 275%)
25.2M25.20 mi0.35 mi24948-3114421-1314421-1325191(Top 95%)14383(Top 95%)14383(Top 272%)
Finish26.22 mi1.02 mi25005-5714441-2014441-2025848(Top 97%)14728(Top 97%)14728(Top 279%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 81%
×21story building
+97ft-345ft

Overall

21657

Males

13051

M18-39

13051

5K→10K

3.1 - 6.2 mi

Top 79%
×5story building
+79ft-138ft

Overall

20929

Males

12692

M18-39

12692

10K→15K

6.2 - 9.3 mi

Top 81%
×3story building
+67ft-78ft

Overall

21657

Males

13051

M18-39

13051

15K→20K

9.3 - 12.4 mi

Top 89%
×5story building
+106ft-86ft

Overall

23763

Males

13959

M18-39

13959

20K→Half

12.4 - 13.1 mi

Top 89%
×2story building
+19ft-37ft

Overall

23820

Males

13987

M18-39

13987

Half→25K

13.1 - 15.5 mi

Top 98%
×4story building
+66ft-88ft

Overall

26008

Males

14902

M18-39

14902

25K→30K

15.5 - 18.6 mi

Top 98%
×9story building
+181ft-148ft

Overall

25994

Males

14872

M18-39

14872

30K→20M

18.6 - 20.0 mi

Top 98%
×5story building
+64ft-50ft

Overall

26069

Males

14883

M18-39

14883

20M→21M

20.0 - 21.0 mi

Top 93%
×8story building
+106ft-24ft

Overall

24840

Males

14296

M18-39

14296

21M→35K

21.0 - 21.8 mi

Top 98%
×7story building
+17ft-86ft

Overall

26151

Males

14927

M18-39

14927

35K→23M

21.8 - 23.0 mi

Top 95%
×5story building
+23ft-63ft

Overall

25254

Males

14462

M18-39

14462

23M→24M

23.0 - 24.0 mi

Top 95%
×6story building
+12ft-82ft

Overall

25342

Males

14473

M18-39

14473

24M→40K

24.0 - 24.9 mi

Top 96%
×1story
+6ft-20ft

Overall

25501

Males

14556

M18-39

14556

40K→25.2M

24.9 - 25.2 mi

Top 95%
×1story
+13ft-16ft

Overall

25191

Males

14383

M18-39

14383

25.2M→Finish

25.2 - 26.2 mi

Top 97%
×2story building
+22ft-21ft

Overall

25848

Males

14728

M18-39

14728

Passing Analysis

Category:
Athletes Passed
759
Passed By
3899
Net Change
-3140
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21865
5K → 10K506109+397#21865#21468
10K → 15K138197-59#21468#21527
15K → 20K17751-734#21527#22261
20K → Half5114-109#22261#22370
Half → 25K51169-1164#22370#23534
25K → 30K9816-807#23534#24341
30K → 20M7255-248#24341#24589
20M → 21M1873-55#24589#24644
21M → 35K5114-109#24644#24753
35K → 23M1778-61#24753#24814
23M → 24M954-45#24814#24859
24M → 40K1573-58#24859#24917
40K → 25.2M233-31#24917#24948
25.2M → Finish663-57#24948#25005
TOTALS7593899-3140
📊

Passing Visuals

Category:
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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing