Boston Marathon logo
BOSTON MARATHON 2023

Americo Duarte

Bib: 5521•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 11%
Gender (Male)
#0 / 15176
Top 18%
Masters (Masters Men)
#0 / 9891
Top 7%
Division (M45-49)
#0 / 2252
Top 8%
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
6:36/mi
20:29
↑ 97↓ 3451.5%
10K· 6.21 mi
6:33/mi
40:49
↑ 79↓ 1380.4%
15K· 9.32 mi
6:34/mi
1:01:12
↑ 67↓ 78
20K· 12.43 mi
6:38/mi
1:21:49
↑ 106↓ 860.1%
Half· 13.11 mi
6:43/mi
1:26:24
↑ 19↓ 370.5%
25K· 15.53 mi
6:42/mi
1:42:39
↑ 66↓ 880.2%
30K· 18.64 mi
6:53/mi
2:04:01
↑ 181↓ 1480.2%
20M
6:46/mi
2:13:13
↑ 64↓ 500.2%
21M
7:25/mi
2:20:38
↑ 106↓ 241.6%
35K· 21.75 mi
6:32/mi
2:25:31
↑ 17↓ 861.7%
23M
6:51/mi
2:34:05
↑ 23↓ 630.6%
24M
6:37/mi
2:40:42
↓ 821.3%
40K· 24.85 mi
6:49/mi
2:46:32
↓ 200.3%
25.2M
7:18/mi
2:49:03
↑ 13↓ 160.2%
Finish· 26.22 mi
6:43/mi
2:55:54
↑ 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
Time1:26:24
Pace6:35 /mi
2nd Half
Distance13.11 mi
Time1:29:30
Pace6:50 /mi
📊Positive Split: 3.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:0020:296:3620:29
6:36
-
10K
6.21 mi10:43:2040:496:3420:20
6:33
-0:03
15K
9.32 mi11:03:431:01:126:3420:23
6:34
+0:01
20K
12.43 mi11:24:201:21:496:3520:37
6:38
+0:04
Half
13.11 mi11:28:551:26:246:354:35
6:43
+0:05
25K
15.53 mi11:45:101:42:396:3616:15
6:42
-0:01
30K
18.64 mi12:06:322:04:016:3921:22
6:53
+0:11
20M
20.00 mi12:15:442:13:136:409:12
6:46
-0:07
21M
21.00 mi12:23:092:20:386:427:25
7:25
+0:39
35K
21.75 mi12:28:022:25:316:414:53
6:32
-0:53
23M
23.00 mi12:36:362:34:056:428:34
6:51
+0:19
24M
24.00 mi12:43:132:40:426:426:37
6:37
-0:14
40K
24.85 mi12:49:032:46:326:425:50
6:49
+0:12
25.2M
25.20 mi12:51:342:49:036:432:31
7:18
+0:29
Finish
26.22 mi12:58:252:55:546:436:51
6:43
-0:35

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

6:32 /mi

Average Pace

6:43 /mi

Slowest Pace

7:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:45:58

94% of race

Time at Steady Pace

9:56

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:43 /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 mi10:23:0020:296:3620:29
6:36
#2814
10K
6.21 mi10:43:2040:496:3420:20
6:33
#2920
15K
9.32 mi11:03:431:01:126:3420:23
6:34
#2940
20K
12.43 mi11:24:201:21:496:3520:37
6:38
#2962
Half
13.11 mi11:28:551:26:246:354:35
6:43
#3028
25K
15.53 mi11:45:101:42:396:3616:15
6:42
#3052
30K
18.64 mi12:06:322:04:016:3921:22
6:53
#3059
20M
20.00 mi12:15:442:13:136:409:12
6:46
#3007
21M
21.00 mi12:23:092:20:386:427:25
7:25
#3070
35K
21.75 mi12:28:022:25:316:414:53
6:32
#3034
23M
23.00 mi12:36:362:34:056:428:34
6:51
#2989
24M
24.00 mi12:43:132:40:426:426:37
6:37
#2944
40K
24.85 mi12:49:032:46:326:425:50
6:49
#2925
25.2M
25.20 mi12:51:342:49:036:432:31
7:18
#2906
Finish
26.22 mi12:58:252:55:546:436:51
6:43
#2905
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi2814267726772996(Top 11%)2860(Top 19%)2860(Top 127%)
10K6.21 mi3.10 mi2920-1062786-1092786-1093078(Top 12%)2936(Top 19%)2936(Top 130%)
15K9.32 mi3.11 mi2940-202803-172803-172996(Top 11%)2860(Top 19%)2860(Top 127%)
20K12.43 mi3.11 mi2962-222828-252828-253073(Top 12%)2925(Top 19%)2925(Top 130%)
Half13.11 mi0.68 mi3028-662890-622890-624417(Top 17%)4109(Top 27%)4109(Top 182%)
25K15.53 mi2.42 mi3052-242910-202910-203356(Top 13%)3183(Top 21%)3183(Top 141%)
30K18.64 mi3.11 mi3059-72915-52915-53493(Top 13%)3284(Top 22%)3284(Top 146%)
20M20.00 mi1.36 mi3007+522866+492866+492645(Top 10%)2502(Top 16%)2502(Top 111%)
21M21.00 mi1.00 mi3070-632916-502916-504168(Top 16%)3820(Top 25%)3820(Top 170%)
35K21.75 mi0.75 mi3034+362883+332883+332573(Top 10%)2432(Top 16%)2432(Top 108%)
23M23.00 mi1.25 mi2989+452843+402843+402890(Top 11%)2700(Top 18%)2700(Top 120%)
24M24.00 mi1.00 mi2944+452799+442799+442647(Top 10%)2465(Top 16%)2465(Top 109%)
40K24.85 mi0.85 mi2925+192779+202779+202929(Top 11%)2696(Top 18%)2696(Top 120%)
25.2M25.20 mi0.35 mi2906+192758+212758+212905(Top 11%)2660(Top 18%)2660(Top 118%)
Finish26.22 mi1.02 mi2905+12753+52753+53611(Top 14%)3225(Top 21%)3225(Top 143%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21story building
+97ft-345ft

Overall

2996

Males

2860

M45-49

2860

5K→10K

3.1 - 6.2 mi

Top 12%
×5story building
+79ft-138ft

Overall

3078

Males

2936

M45-49

2936

10K→15K

6.2 - 9.3 mi

Top 11%
×3story building
+67ft-78ft

Overall

2996

Males

2860

M45-49

2860

15K→20K

9.3 - 12.4 mi

Top 12%
×5story building
+106ft-86ft

Overall

3073

Males

2925

M45-49

2925

20K→Half

12.4 - 13.1 mi

Top 17%
×2story building
+19ft-37ft

Overall

4417

Males

4109

M45-49

4109

Half→25K

13.1 - 15.5 mi

Top 13%
×4story building
+66ft-88ft

Overall

3356

Males

3183

M45-49

3183

25K→30K

15.5 - 18.6 mi

Top 13%
×9story building
+181ft-148ft

Overall

3493

Males

3284

M45-49

3284

30K→20M

18.6 - 20.0 mi

Top 10%
×5story building
+64ft-50ft

Overall

2645

Males

2502

M45-49

2502

20M→21M

20.0 - 21.0 mi

Top 16%
×8story building
+106ft-24ft

Overall

4168

Males

3820

M45-49

3820

21M→35K

21.0 - 21.8 mi

Top 10%
×7story building
+17ft-86ft

Overall

2573

Males

2432

M45-49

2432

35K→23M

21.8 - 23.0 mi

Top 11%
×5story building
+23ft-63ft

Overall

2890

Males

2700

M45-49

2700

23M→24M

23.0 - 24.0 mi

Top 10%
×6story building
+12ft-82ft

Overall

2647

Males

2465

M45-49

2465

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

2929

Males

2696

M45-49

2696

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

2905

Males

2660

M45-49

2660

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2story building
+22ft-21ft

Overall

3611

Males

3225

M45-49

3225

Passing Analysis

Category:
Athletes Passed
815
Passed By
906
Net Change
-91
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2814
5K → 10K115221-106#2814#2920
10K → 15K89109-20#2920#2940
15K → 20K6789-22#2940#2962
20K → Half470-66#2962#3028
Half → 25K5276-24#3028#3052
25K → 30K9097-7#3052#3059
30K → 20M6816+52#3059#3007
20M → 21M2992-63#3007#3070
21M → 35K4610+36#3070#3034
35K → 23M7833+45#3034#2989
23M → 24M6116+45#2989#2944
24M → 40K4930+19#2944#2925
40K → 25.2M289+19#2925#2906
25.2M → Finish3938+1#2906#2905
TOTALS815906-91
📊

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