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BOSTON MARATHON 2025

Juan-Desmond Rios

Bib: 4231•M

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0:00
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Overall
#0 / 28404
Top 9%
Gender (Male)
#0 / 16105
Top 15%
Division (M18-39)
#0 / 5642
Top 35%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:39
Rank: #2584
Start → 5K
19:39 | 6:19/mi
10K· 6.21 mi
39:13
Rank: #2491 (+93)
5K → 10K
19:34 | 6:18/mi
15K· 9.32 mi
58:59
Rank: #2555 (-64)
10K → 15K
19:46 | 6:22/mi
20K· 12.43 mi
1:19:04
Rank: #2618 (-63)
15K → 20K
20:05 | 6:28/mi
Half· 13.11 mi
1:23:26
Rank: #2637 (-19)
20K → Half
4:22 | 6:24/mi
25K· 15.53 mi
1:39:13
Rank: #2666 (-29)
Half → 25K
15:47 | 6:31/mi
30K· 18.64 mi
2:00:18
Rank: #2739 (-73)
25K → 30K
21:05 | 6:47/mi
20M
2:09:32
Rank: #2742 (-3)
30K → 20M
9:14 | 6:48/mi
21M
2:16:34
Rank: #2690 (+52)
20M → 21M
7:02 | 7:02/mi
35K· 21.75 mi
2:21:33
Rank: #2688 (+2)
21M → 35K
4:59 | 6:40/mi
23M
2:30:07
Rank: #2666 (+22)
35K → 23M
8:34 | 6:51/mi
24M
2:36:49
Rank: #2638 (+28)
23M → 24M
6:42 | 6:42/mi
40K· 24.85 mi
2:42:38
Rank: #2621 (+17)
24M → 40K
5:49 | 6:48/mi
25.2M
2:45:11
Rank: #2615 (+6)
40K → 25.2M
2:33 | 7:24/mi
Finish· 26.22 mi
2:51:50
Rank: #2597 (+18)
25.2M → Finish
6:39 | 6:32/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:26
Pace6:22 /mi
2nd Half
Distance13.11 mi
Time1:28:24
Pace6:45 /mi
📊Positive Split: 6.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:4119:396:1919:39
6:19
-
10K
6.21 mi10:41:1539:136:1919:34
6:18
-0:01
15K
9.32 mi11:01:0158:596:2019:46
6:22
+0:04
20K
12.43 mi11:21:061:19:046:2220:05
6:28
+0:06
Half
13.11 mi11:25:281:23:266:224:22
6:24
-0:04
25K
15.53 mi11:41:151:39:136:2315:47
6:31
+0:07
30K
18.64 mi12:02:202:00:186:2721:05
6:47
+0:16
20M
20.00 mi12:11:342:09:326:299:14
6:48
+0:01
21M
21.00 mi12:18:362:16:346:307:02
7:02
+0:14
35K
21.75 mi12:23:352:21:336:314:59
6:40
-0:22
23M
23.00 mi12:32:092:30:076:328:34
6:51
+0:11
24M
24.00 mi12:38:512:36:496:326:42
6:42
-0:09
40K
24.85 mi12:44:402:42:386:335:49
6:48
+0:06
25.2M
25.20 mi12:47:132:45:116:332:33
7:24
+0:36
Finish
26.22 mi12:53:522:51:506:346:39
6:32
-0:52

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

6:18 /mi

Average Pace

6:34 /mi

Slowest Pace

7:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:42:15

94% of race

Time at Steady Pace

9:35

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:33 /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 mi10:21:4119:396:1919:39
6:19
#2584
10K
6.21 mi10:41:1539:136:1919:34
6:18
#2491
15K
9.32 mi11:01:0158:596:2019:46
6:22
#2555
20K
12.43 mi11:21:061:19:046:2220:05
6:28
#2618
Half
13.11 mi11:25:281:23:266:224:22
6:24
#2637
25K
15.53 mi11:41:151:39:136:2315:47
6:31
#2666
30K
18.64 mi12:02:202:00:186:2721:05
6:47
#2739
20M
20.00 mi12:11:342:09:326:299:14
6:48
#2742
21M
21.00 mi12:18:362:16:346:307:02
7:02
#2690
35K
21.75 mi12:23:352:21:336:314:59
6:40
#2688
23M
23.00 mi12:32:092:30:076:328:34
6:51
#2666
24M
24.00 mi12:38:512:36:496:326:42
6:42
#2638
40K
24.85 mi12:44:402:42:386:335:49
6:48
#2621
25.2M
25.20 mi12:47:132:45:116:332:33
7:24
#2615
Finish
26.22 mi12:53:522:51:506:346:39
6:32
#2597
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2584246024602689(Top 9%)2560(Top 16%)2560(Top 45%)
10K6.21 mi3.10 mi2491+932373+872373+872400(Top 8%)2295(Top 14%)2295(Top 41%)
15K9.32 mi3.11 mi2555-642435-622435-622689(Top 9%)2560(Top 16%)2560(Top 45%)
20K12.43 mi3.11 mi2618-632498-632498-632885(Top 10%)2747(Top 17%)2747(Top 49%)
Half13.11 mi0.68 mi2637-192516-182516-183001(Top 11%)2862(Top 18%)2862(Top 51%)
25K15.53 mi2.42 mi2666-292544-282544-282924(Top 10%)2780(Top 17%)2780(Top 49%)
30K18.64 mi3.11 mi2739-732611-672611-673342(Top 12%)3120(Top 19%)3120(Top 55%)
20M20.00 mi1.36 mi2742-32612-12612-12868(Top 10%)2677(Top 17%)2677(Top 47%)
21M21.00 mi1.00 mi2690+522561+512561+512364(Top 8%)2205(Top 14%)2205(Top 39%)
35K21.75 mi0.75 mi2688+22557+42557+43230(Top 11%)2946(Top 18%)2946(Top 52%)
23M23.00 mi1.25 mi2666+222533+242533+242885(Top 10%)2640(Top 16%)2640(Top 47%)
24M24.00 mi1.00 mi2638+282505+282505+282952(Top 10%)2676(Top 17%)2676(Top 47%)
40K24.85 mi0.85 mi2621+172485+202485+202823(Top 10%)2549(Top 16%)2549(Top 45%)
25.2M25.20 mi0.35 mi2615+62476+92476+92853(Top 10%)2532(Top 16%)2532(Top 45%)
Finish26.22 mi1.02 mi2597+182457+192457+192925(Top 10%)2606(Top 16%)2606(Top 46%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 9%
×21stories
+97ft-345ft

Overall

2689

Males

2560

M18-39

2560

5K→10K

3.1 - 6.2 mi

Top 8%
×5stories
+79ft-138ft

Overall

2400

Males

2295

M18-39

2295

10K→15K

6.2 - 9.3 mi

Top 9%
×3stories
+67ft-78ft

Overall

2689

Males

2560

M18-39

2560

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2885

Males

2747

M18-39

2747

20K→Half

12.4 - 13.1 mi

Top 11%
×2stories
+19ft-37ft

Overall

3001

Males

2862

M18-39

2862

Half→25K

13.1 - 15.5 mi

Top 10%
×4stories
+66ft-88ft

Overall

2924

Males

2780

M18-39

2780

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3342

Males

3120

M18-39

3120

30K→20M

18.6 - 20.0 mi

Top 10%
×5stories
+64ft-50ft

Overall

2868

Males

2677

M18-39

2677

20M→21M

20.0 - 21.0 mi

Top 8%
×8stories
+106ft-24ft

Overall

2364

Males

2205

M18-39

2205

21M→35K

21.0 - 21.8 mi

Top 11%
×7stories
+17ft-86ft

Overall

3230

Males

2946

M18-39

2946

35K→23M

21.8 - 23.0 mi

Top 10%
×5stories
+23ft-63ft

Overall

2885

Males

2640

M18-39

2640

23M→24M

23.0 - 24.0 mi

Top 10%
×6stories
+12ft-82ft

Overall

2952

Males

2676

M18-39

2676

24M→40K

24.0 - 24.9 mi

Top 10%
×1story
+6ft-20ft

Overall

2823

Males

2549

M18-39

2549

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2853

Males

2532

M18-39

2532

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2stories
+22ft-21ft

Overall

2925

Males

2606

M18-39

2606

Passing Analysis

Category:
Athletes Passed
798
Passed By
811
Net Change
-13
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2584
5K → 10K16168+93#2584#2491
10K → 15K57121-64#2491#2555
15K → 20K59122-63#2555#2618
20K → Half1029-19#2618#2637
Half → 25K5382-29#2637#2666
25K → 30K75148-73#2666#2739
30K → 20M5659-3#2739#2742
20M → 21M7725+52#2742#2690
21M → 35K2523+2#2690#2688
35K → 23M6240+22#2688#2666
23M → 24M5729+28#2666#2638
24M → 40K4225+17#2638#2621
40K → 25.2M2014+6#2621#2615
25.2M → Finish4426+18#2615#2597
TOTALS798811-13
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing