Boston Marathon logo
BOSTON MARATHON 2023

Edward Irizarry Santiago

Bib: 4363•M

TX

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 8%
Gender (Male)
#0 / 15176
Top 14%
Division (M18-39)
#0 / 5285
Top 32%
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
6:40/mi
20:42
↑ 97↓ 3451.5%
10K· 6.21 mi
6:33/mi
41:03
↑ 79↓ 1380.4%
15K· 9.32 mi
6:34/mi
1:01:26
↑ 67↓ 78
20K· 12.43 mi
6:30/mi
1:21:39
↑ 106↓ 860.1%
Half· 13.11 mi
6:28/mi
1:26:04
↑ 19↓ 370.5%
25K· 15.53 mi
6:37/mi
1:42:06
↑ 66↓ 880.2%
30K· 18.64 mi
6:42/mi
2:02:56
↑ 181↓ 1480.2%
20M
6:51/mi
2:12:15
↑ 64↓ 500.2%
21M
7:04/mi
2:19:19
↑ 106↓ 241.6%
35K· 21.75 mi
6:34/mi
2:24:14
↑ 17↓ 861.7%
23M
6:43/mi
2:32:39
↑ 23↓ 630.6%
24M
6:16/mi
2:38:55
↓ 821.3%
40K· 24.85 mi
6:12/mi
2:44:13
↓ 200.3%
25.2M
6:34/mi
2:46:29
↑ 13↓ 160.2%
Finish· 26.22 mi
6:02/mi
2:52:38
↑ 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 Half⚖️ Balanced
Distance13.11 mi
Time1:26:04
Pace6:34 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:26:34
Pace6:36 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:3520:426:4020:42
6:40
-
10K
6.21 mi10:42:5641:036:3620:21
6:33
-0:07
15K
9.32 mi11:03:191:01:266:3520:23
6:34
+0:01
20K
12.43 mi11:23:321:21:396:3420:13
6:30
-0:04
Half
13.11 mi11:27:571:26:046:344:25
6:28
-0:02
25K
15.53 mi11:43:591:42:066:3416:02
6:37
+0:09
30K
18.64 mi12:04:492:02:566:3620:50
6:42
+0:05
20M
20.00 mi12:14:082:12:156:379:19
6:51
+0:09
21M
21.00 mi12:21:122:19:196:387:04
7:04
+0:13
35K
21.75 mi12:26:072:24:146:384:55
6:34
-0:30
23M
23.00 mi12:34:322:32:396:388:25
6:43
+0:09
24M
24.00 mi12:40:482:38:556:376:16
6:16
-0:27
40K
24.85 mi12:46:062:44:136:365:18
6:12
-0:04
25.2M
25.20 mi12:48:222:46:296:362:16
6:34
+0:22
Finish
26.22 mi12:54:312:52:386:356:09
6:02
-0:32

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

6:02 /mi

Average Pace

6:35 /mi

Slowest Pace

7:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:46:18

62% of race

Time at Steady Pace

1:06:20

38% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:35 /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 mi10:22:3520:426:4020:42
6:40
#3317
10K
6.21 mi10:42:5641:036:3620:21
6:33
#3201
15K
9.32 mi11:03:191:01:266:3520:23
6:34
#3123
20K
12.43 mi11:23:321:21:396:3420:13
6:30
#2868
Half
13.11 mi11:27:571:26:046:344:25
6:28
#2846
25K
15.53 mi11:43:591:42:066:3416:02
6:37
#2808
30K
18.64 mi12:04:492:02:566:3620:50
6:42
#2717
20M
20.00 mi12:14:082:12:156:379:19
6:51
#2708
21M
21.00 mi12:21:122:19:196:387:04
7:04
#2646
35K
21.75 mi12:26:072:24:146:384:55
6:34
#2630
23M
23.00 mi12:34:322:32:396:388:25
6:43
#2565
24M
24.00 mi12:40:482:38:556:376:16
6:16
#2464
40K
24.85 mi12:46:062:44:136:365:18
6:12
#2366
25.2M
25.20 mi12:48:222:46:296:362:16
6:34
#2324
Finish
26.22 mi12:54:312:52:386:356:09
6:02
#2217
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3317312931292987(Top 11%)2851(Top 19%)2851(Top 54%)
10K6.21 mi3.10 mi3201+1163037+923037+923109(Top 12%)2965(Top 20%)2965(Top 56%)
15K9.32 mi3.11 mi3123+782974+632974+632987(Top 11%)2851(Top 19%)2851(Top 54%)
20K12.43 mi3.11 mi2868+2552738+2362738+2362326(Top 9%)2229(Top 15%)2229(Top 42%)
Half13.11 mi0.68 mi2846+222718+202718+202584(Top 10%)2478(Top 16%)2478(Top 47%)
25K15.53 mi2.42 mi2808+382685+332685+332766(Top 10%)2644(Top 17%)2644(Top 50%)
30K18.64 mi3.11 mi2717+912596+892596+892417(Top 9%)2301(Top 15%)2301(Top 44%)
20M20.00 mi1.36 mi2708+92588+82588+83122(Top 12%)2928(Top 19%)2928(Top 55%)
21M21.00 mi1.00 mi2646+622528+602528+602450(Top 9%)2313(Top 15%)2313(Top 44%)
35K21.75 mi0.75 mi2630+162513+152513+152795(Top 10%)2622(Top 17%)2622(Top 50%)
23M23.00 mi1.25 mi2565+652452+612452+612251(Top 8%)2122(Top 14%)2122(Top 40%)
24M24.00 mi1.00 mi2464+1012356+962356+961271(Top 5%)1205(Top 8%)1205(Top 23%)
40K24.85 mi0.85 mi2366+982263+932263+93664(Top 2%)628(Top 4%)628(Top 12%)
25.2M25.20 mi0.35 mi2324+422225+382225+38645(Top 2%)612(Top 4%)612(Top 12%)
Finish26.22 mi1.02 mi2217+1072123+1022123+102829(Top 3%)795(Top 5%)795(Top 15%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21story building
+97ft-345ft

Overall

2987

Males

2851

M18-39

2851

5K→10K

3.1 - 6.2 mi

Top 12%
×5story building
+79ft-138ft

Overall

3109

Males

2965

M18-39

2965

10K→15K

6.2 - 9.3 mi

Top 11%
×3story building
+67ft-78ft

Overall

2987

Males

2851

M18-39

2851

15K→20K

9.3 - 12.4 mi

Top 9%
×5story building
+106ft-86ft

Overall

2326

Males

2229

M18-39

2229

20K→Half

12.4 - 13.1 mi

Top 10%
×2story building
+19ft-37ft

Overall

2584

Males

2478

M18-39

2478

Half→25K

13.1 - 15.5 mi

Top 10%
×4story building
+66ft-88ft

Overall

2766

Males

2644

M18-39

2644

25K→30K

15.5 - 18.6 mi

Top 9%
×9story building
+181ft-148ft

Overall

2417

Males

2301

M18-39

2301

30K→20M

18.6 - 20.0 mi

Top 12%
×5story building
+64ft-50ft

Overall

3122

Males

2928

M18-39

2928

20M→21M

20.0 - 21.0 mi

Top 9%
×8story building
+106ft-24ft

Overall

2450

Males

2313

M18-39

2313

21M→35K

21.0 - 21.8 mi

Top 10%
×7story building
+17ft-86ft

Overall

2795

Males

2622

M18-39

2622

35K→23M

21.8 - 23.0 mi

Top 8%
×5story building
+23ft-63ft

Overall

2251

Males

2122

M18-39

2122

23M→24M

23.0 - 24.0 mi

Top 5%
×6story building
+12ft-82ft

Overall

1271

Males

1205

M18-39

1205

24M→40K

24.0 - 24.9 mi

Top 2%
×1story
+6ft-20ft

Overall

664

Males

628

M18-39

628

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

645

Males

612

M18-39

612

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2story building
+22ft-21ft

Overall

829

Males

795

M18-39

795

Passing Analysis

Category:
Athletes Passed
1415
Passed By
315
Net Change
+1100
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3317
5K → 10K220104+116#3317#3201
10K → 15K13658+78#3201#3123
15K → 20K26611+255#3123#2868
20K → Half275+22#2868#2846
Half → 25K7537+38#2846#2808
25K → 30K12029+91#2808#2717
30K → 20M4031+9#2717#2708
20M → 21M664+62#2708#2646
21M → 35K3115+16#2646#2630
35K → 23M8520+65#2630#2565
23M → 24M1010+101#2565#2464
24M → 40K980+98#2464#2366
40K → 25.2M420+42#2366#2324
25.2M → Finish1081+107#2324#2217
TOTALS1415315+1100
📊

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