Boston Marathon logo
BOSTON MARATHON 2023

Darwin Marenco Romero

Bib: 13397•X

WA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 34%
Gender (Other)
#0 / 23
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:44
Rank: #10940
Start → 5K
23:44 | 7:38/mi
10K· 6.21 mi
46:34
Rank: #9984 (+956)
5K → 10K
22:50 | 7:21/mi
15K· 9.32 mi
1:09:11
Rank: #9383 (+601)
10K → 15K
22:37 | 7:17/mi
20K· 12.43 mi
1:32:09
Rank: #9116 (+267)
15K → 20K
22:58 | 7:24/mi
Half· 13.11 mi
1:37:06
Rank: #9076 (+40)
20K → Half
4:57 | 7:15/mi
25K· 15.53 mi
1:55:31
Rank: #9123 (-47)
Half → 25K
18:25 | 7:36/mi
30K· 18.64 mi
2:20:11
Rank: #9318 (-195)
25K → 30K
24:40 | 7:56/mi
20M
2:31:12
Rank: #9446 (-128)
30K → 20M
11:01 | 8:06/mi
21M
2:40:00
Rank: #9580 (-134)
20M → 21M
8:48 | 8:48/mi
35K· 21.75 mi
2:45:43
Rank: #9572 (+8)
21M → 35K
5:43 | 7:38/mi
23M
2:55:28
Rank: #9441 (+131)
35K → 23M
9:45 | 7:47/mi
24M
3:02:45
Rank: #9257 (+184)
23M → 24M
7:17 | 7:17/mi
40K· 24.85 mi
3:09:13
Rank: #9154 (+103)
24M → 40K
6:28 | 7:34/mi
25.2M
3:11:57
Rank: #9109 (+45)
40K → 25.2M
2:44 | 7:56/mi
Finish· 26.22 mi
3:19:14
Rank: #8952 (+157)
25.2M → Finish
7:17 | 7:09/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
Time1:37:06
Pace7:24 /mi
2nd Half
Distance13.11 mi
Time1:42:08
Pace7:47 /mi
📊Positive Split: 5.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:3423:447:3823:44
7:38
-
10K
6.21 mi11:15:2446:347:3022:50
7:21
-0:17
15K
9.32 mi11:38:011:09:117:2522:37
7:17
-0:04
20K
12.43 mi12:00:591:32:097:2522:58
7:24
+0:07
Half
13.11 mi12:05:561:37:067:244:57
7:15
-0:09
25K
15.53 mi12:24:211:55:317:2618:25
7:36
+0:21
30K
18.64 mi12:49:012:20:117:3124:40
7:56
+0:20
20M
20.00 mi13:00:022:31:127:3411:01
8:06
+0:10
21M
21.00 mi13:08:502:40:007:378:48
8:48
+0:42
35K
21.75 mi13:14:332:45:437:375:43
7:38
-1:10
23M
23.00 mi13:24:182:55:287:389:45
7:47
+0:09
24M
24.00 mi13:31:353:02:457:377:17
7:17
-0:30
40K
24.85 mi13:38:033:09:137:376:28
7:34
+0:17
25.2M
25.20 mi13:40:473:11:577:372:44
7:56
+0:22
Finish
26.22 mi13:48:043:19:147:367:17
7:09
-0:47

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

7:09 /mi

Average Pace

7:36 /mi

Slowest Pace

8:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:04:58

33% of race

Time at Steady Pace

1:27:03

44% of race

Time at Slower Pace

47:13

24% of race

Average Pace: 7:36 /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 mi10:52:3423:447:3823:44
7:38
#10940
10K
6.21 mi11:15:2446:347:3022:50
7:21
#9984
15K
9.32 mi11:38:011:09:117:2522:37
7:17
#9383
20K
12.43 mi12:00:591:32:097:2522:58
7:24
#9116
Half
13.11 mi12:05:561:37:067:244:57
7:15
#9076
25K
15.53 mi12:24:211:55:317:2618:25
7:36
#9123
30K
18.64 mi12:49:012:20:117:3124:40
7:56
#9318
20M
20.00 mi13:00:022:31:127:3411:01
8:06
#9446
21M
21.00 mi13:08:502:40:007:378:48
8:48
#9580
35K
21.75 mi13:14:332:45:437:375:43
7:38
#9572
23M
23.00 mi13:24:182:55:287:389:45
7:47
#9441
24M
24.00 mi13:31:353:02:457:377:17
7:17
#9257
40K
24.85 mi13:38:033:09:137:376:28
7:34
#9154
25.2M
25.20 mi13:40:473:11:577:372:44
7:56
#9109
Finish
26.22 mi13:48:043:19:147:367:17
7:09
#8952
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallXAge DivSeg. OverallSeg. XSeg. Age Div
5K3.11 mi3.11 mi1094014148428(Top 32%)12(Top 52%)12
10K6.21 mi3.10 mi9984+95613+113+19250(Top 35%)13(Top 57%)13
15K9.32 mi3.11 mi9383+60113138428(Top 32%)12(Top 52%)12
20K12.43 mi3.11 mi9116+26713138469(Top 32%)11(Top 48%)11
Half13.11 mi0.68 mi9076+4013138344(Top 31%)11(Top 48%)11
25K15.53 mi2.42 mi9123-4712+112+19535(Top 36%)13(Top 57%)13
30K18.64 mi3.11 mi9318-195121210455(Top 39%)14(Top 61%)14
20M20.00 mi1.36 mi9446-12813-113-111109(Top 42%)16(Top 70%)16
21M21.00 mi1.00 mi9580-134131312307(Top 46%)18(Top 78%)18
35K21.75 mi0.75 mi9572+813139632(Top 36%)9(Top 39%)9
23M23.00 mi1.25 mi9441+13113138368(Top 31%)7(Top 30%)7
24M24.00 mi1.00 mi9257+18413136314(Top 24%)5(Top 22%)5
40K24.85 mi0.85 mi9154+10313137160(Top 27%)6(Top 26%)6
25.2M25.20 mi0.35 mi9109+4513136207(Top 23%)5(Top 22%)5
Finish26.22 mi1.02 mi8952+15713136141(Top 23%)5(Top 22%)5

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 32%
×21stories
+97ft-345ft

Overall

8428

X

12

Age Div

12

5K→10K

3.1 - 6.2 mi

Top 35%
×5stories
+79ft-138ft

Overall

9250

X

13

Age Div

13

10K→15K

6.2 - 9.3 mi

Top 32%
×3stories
+67ft-78ft

Overall

8428

X

12

Age Div

12

15K→20K

9.3 - 12.4 mi

Top 32%
×5stories
+106ft-86ft

Overall

8469

X

11

Age Div

11

20K→Half

12.4 - 13.1 mi

Top 31%
×2stories
+19ft-37ft

Overall

8344

X

11

Age Div

11

Half→25K

13.1 - 15.5 mi

Top 36%
×4stories
+66ft-88ft

Overall

9535

X

13

Age Div

13

25K→30K

15.5 - 18.6 mi

Top 39%
×9stories
+181ft-148ft

Overall

10455

X

14

Age Div

14

30K→20M

18.6 - 20.0 mi

Top 42%
×5stories
+64ft-50ft

Overall

11109

X

16

Age Div

16

20M→21M

20.0 - 21.0 mi

Top 46%
×8stories
+106ft-24ft

Overall

12307

X

18

Age Div

18

21M→35K

21.0 - 21.8 mi

Top 36%
×7stories
+17ft-86ft

Overall

9632

X

9

Age Div

9

35K→23M

21.8 - 23.0 mi

Top 31%
×5stories
+23ft-63ft

Overall

8368

X

7

Age Div

7

23M→24M

23.0 - 24.0 mi

Top 24%
×6stories
+12ft-82ft

Overall

6314

X

5

Age Div

5

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7160

X

6

Age Div

6

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6207

X

5

Age Div

5

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2stories
+22ft-21ft

Overall

6141

X

5

Age Div

5

Passing Analysis

Category:
Athletes Passed
2983*
Passed By
995
Net Change
+1988
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10940
5K → 10K993*37+956#10940#9984
10K → 15K61413+601#9984#9383
15K → 20K29528+267#9383#9116
20K → Half5010+40#9116#9076
Half → 25K104151-47#9076#9123
25K → 30K108303-195#9123#9318
30K → 20M46174-128#9318#9446
20M → 21M44178-134#9446#9580
21M → 35K5345+8#9580#9572
35K → 23M15322+131#9572#9441
23M → 24M1895+184#9441#9257
24M → 40K11512+103#9257#9154
40K → 25.2M516+45#9154#9109
25.2M → Finish16811+157#9109#8952
TOTALS2983*995+1988

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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