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BOSTON MARATHON 2025

Chaz Donati

Bib: 32298•M

AZ

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 47%
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:53
Rank: #16649
Start → 5K
24:53 | 8:01/mi
10K· 6.21 mi
47:41
Rank: #13698 (+2951)
5K → 10K
22:48 | 7:20/mi
15K· 9.32 mi
1:10:03
Rank: #12125 (+1573)
10K → 15K
22:22 | 7:12/mi
20K· 12.43 mi
1:32:17
Rank: #10984 (+1141)
15K → 20K
22:14 | 7:09/mi
Half· 13.11 mi
1:37:09
Rank: #10840 (+144)
20K → Half
4:52 | 7:08/mi
25K· 15.53 mi
1:57:38
Rank: #11942 (-1102)
Half → 25K
20:29 | 8:27/mi
30K· 18.64 mi
2:25:11
Rank: #12977 (-1035)
25K → 30K
27:33 | 8:52/mi
20M
2:36:34
Rank: #12967 (+10)
30K → 20M
11:23 | 8:23/mi
21M
2:45:59
Rank: #13117 (-150)
20M → 21M
9:25 | 9:25/mi
35K· 21.75 mi
2:52:16
Rank: #13176 (-59)
21M → 35K
6:17 | 8:24/mi
23M
3:04:03
Rank: #13531 (-355)
35K → 23M
11:47 | 9:25/mi
24M
3:12:10
Rank: #13441 (+90)
23M → 24M
8:07 | 8:07/mi
40K· 24.85 mi
3:19:16
Rank: #13383 (+58)
24M → 40K
7:06 | 8:18/mi
25.2M
3:22:24
Rank: #13354 (+29)
40K → 25.2M
3:08 | 9:05/mi
Finish· 26.22 mi
3:30:47
Rank: #13413 (-59)
25.2M → Finish
8:23 | 8:14/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:09
Pace7:25 /mi
2nd Half
Distance13.11 mi
Time1:53:38
Pace8:40 /mi
📊Positive Split: 17.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:0524:538:0124:53
8:01
-
10K
6.21 mi12:12:5347:417:4022:48
7:20
-0:41
15K
9.32 mi12:35:151:10:037:3122:22
7:12
-0:08
20K
12.43 mi12:57:291:32:177:2622:14
7:09
-0:03
Half
13.11 mi13:02:211:37:097:254:52
7:08
-0:01
25K
15.53 mi13:22:501:57:387:3420:29
8:27
+1:19
30K
18.64 mi13:50:232:25:117:4727:33
8:52
+0:25
20M
20.00 mi14:01:462:36:347:5011:23
8:23
-0:29
21M
21.00 mi14:11:112:45:597:549:25
9:25
+1:02
35K
21.75 mi14:17:282:52:167:556:17
8:24
-1:01
23M
23.00 mi14:29:153:04:038:0011:47
9:25
+1:01
24M
24.00 mi14:37:223:12:108:008:07
8:07
-1:18
40K
24.85 mi14:44:283:19:168:017:06
8:18
+0:11
25.2M
25.20 mi14:47:363:22:248:023:08
9:05
+0:47
Finish
26.22 mi14:55:593:30:478:038:23
8:14
-0:51

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

7:08 /mi

Average Pace

8:03 /mi

Slowest Pace

9:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:12:16

34% of race

Time at Steady Pace

1:26:38

41% of race

Time at Slower Pace

51:53

25% of race

Average Pace: 8:02 /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 mi11:50:0524:538:0124:53
8:01
#16649
10K
6.21 mi12:12:5347:417:4022:48
7:20
#13698
15K
9.32 mi12:35:151:10:037:3122:22
7:12
#12125
20K
12.43 mi12:57:291:32:177:2622:14
7:09
#10984
Half
13.11 mi13:02:211:37:097:254:52
7:08
#10840
25K
15.53 mi13:22:501:57:387:3420:29
8:27
#11942
30K
18.64 mi13:50:232:25:117:4727:33
8:52
#12977
20M
20.00 mi14:01:462:36:347:5011:23
8:23
#12967
21M
21.00 mi14:11:112:45:597:549:25
9:25
#13117
35K
21.75 mi14:17:282:52:167:556:17
8:24
#13176
23M
23.00 mi14:29:153:04:038:0011:47
9:25
#13531
24M
24.00 mi14:37:223:12:108:008:07
8:07
#13441
40K
24.85 mi14:44:283:19:168:017:06
8:18
#13383
25.2M
25.20 mi14:47:363:22:248:023:08
9:05
#13354
Finish
26.22 mi14:55:593:30:478:038:23
8:14
#13413
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1664911052110529116(Top 32%)7621(Top 47%)7621(Top 135%)
10K6.21 mi3.10 mi13698+29519894+11589894+115810649(Top 37%)8489(Top 53%)8489(Top 150%)
15K9.32 mi3.11 mi12125+15739184+7109184+7109116(Top 32%)7621(Top 47%)7621(Top 135%)
20K12.43 mi3.11 mi10984+11418625+5598625+5597868(Top 28%)6791(Top 42%)6791(Top 120%)
Half13.11 mi0.68 mi10840+1448550+758550+758563(Top 30%)7246(Top 45%)7246(Top 128%)
25K15.53 mi2.42 mi11942-11029019-4699019-46916839(Top 59%)11029(Top 68%)11029(Top 195%)
30K18.64 mi3.11 mi12977-10359404-3859404-38516974(Top 60%)10909(Top 68%)10909(Top 193%)
20M20.00 mi1.36 mi12967+109375+299375+2912982(Top 46%)8984(Top 56%)8984(Top 159%)
21M21.00 mi1.00 mi13117-1509410-359410-3515681(Top 55%)10090(Top 63%)10090(Top 179%)
35K21.75 mi0.75 mi13176-599418-89418-814815(Top 52%)9632(Top 60%)9632(Top 171%)
23M23.00 mi1.25 mi13531-3559521-1039521-10318270(Top 64%)11103(Top 69%)11103(Top 197%)
24M24.00 mi1.00 mi13441+909459+629459+6212009(Top 42%)8175(Top 51%)8175(Top 145%)
40K24.85 mi0.85 mi13383+589410+499410+4912157(Top 43%)8134(Top 51%)8134(Top 144%)
25.2M25.20 mi0.35 mi13354+299388+229388+2212240(Top 43%)8123(Top 50%)8123(Top 144%)
Finish26.22 mi1.02 mi13413-599386+29386+214426(Top 51%)9220(Top 57%)9220(Top 163%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 32%
×21stories
+97ft-345ft

Overall

9116

Males

7621

M18-39

7621

5K→10K

3.1 - 6.2 mi

Top 37%
×5stories
+79ft-138ft

Overall

10649

Males

8489

M18-39

8489

10K→15K

6.2 - 9.3 mi

Top 32%
×3stories
+67ft-78ft

Overall

9116

Males

7621

M18-39

7621

15K→20K

9.3 - 12.4 mi

Top 28%
×5stories
+106ft-86ft

Overall

7868

Males

6791

M18-39

6791

20K→Half

12.4 - 13.1 mi

Top 30%
×2stories
+19ft-37ft

Overall

8563

Males

7246

M18-39

7246

Half→25K

13.1 - 15.5 mi

Top 59%
×4stories
+66ft-88ft

Overall

16839

Males

11029

M18-39

11029

25K→30K

15.5 - 18.6 mi

Top 60%
×9stories
+181ft-148ft

Overall

16974

Males

10909

M18-39

10909

30K→20M

18.6 - 20.0 mi

Top 46%
×5stories
+64ft-50ft

Overall

12982

Males

8984

M18-39

8984

20M→21M

20.0 - 21.0 mi

Top 55%
×8stories
+106ft-24ft

Overall

15681

Males

10090

M18-39

10090

21M→35K

21.0 - 21.8 mi

Top 52%
×7stories
+17ft-86ft

Overall

14815

Males

9632

M18-39

9632

35K→23M

21.8 - 23.0 mi

Top 64%
×5stories
+23ft-63ft

Overall

18270

Males

11103

M18-39

11103

23M→24M

23.0 - 24.0 mi

Top 42%
×6stories
+12ft-82ft

Overall

12009

Males

8175

M18-39

8175

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

12157

Males

8134

M18-39

8134

40K→25.2M

24.9 - 25.2 mi

Top 43%
×1story
+13ft-16ft

Overall

12240

Males

8123

M18-39

8123

25.2M→Finish

25.2 - 26.2 mi

Top 51%
×2stories
+22ft-21ft

Overall

14426

Males

9220

M18-39

9220

Passing Analysis

Category:
Athletes Passed
6495
Passed By
3259
Net Change
+3236
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16649
5K → 10K29521+2951#16649#13698
10K → 15K15730+1573#13698#12125
15K → 20K11410+1141#12125#10984
20K → Half1451+144#10984#10840
Half → 25K301132-1102#10840#11942
25K → 30K631098-1035#11942#12977
30K → 20M125115+10#12977#12967
20M → 21M69219-150#12967#13117
21M → 35K3392-59#13117#13176
35K → 23M38393-355#13176#13531
23M → 24M12636+90#13531#13441
24M → 40K9739+58#13441#13383
40K → 25.2M5122+29#13383#13354
25.2M → Finish52111-59#13354#13413
TOTALS64953259+3236
📊

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