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BOSTON MARATHON 2025

Thomas Guerra

Bib: 27914•M

MA

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

⏱️ 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
7:49/mi
24:17
↑ 97↓ 3451.5%
10K· 6.21 mi
7:25/mi
47:19
↑ 79↓ 1380.4%
15K· 9.32 mi
7:30/mi
1:10:37
↑ 67↓ 78
20K· 12.43 mi
7:38/mi
1:34:19
↑ 106↓ 860.1%
Half· 13.11 mi
7:46/mi
1:39:37
↑ 19↓ 370.5%
25K· 15.53 mi
8:05/mi
1:59:12
↑ 66↓ 880.2%
30K· 18.64 mi
8:47/mi
2:26:30
↑ 181↓ 1480.2%
20M
9:59/mi
2:40:04
↑ 64↓ 500.2%
21M
9:55/mi
2:49:59
↑ 106↓ 241.6%
35K· 21.75 mi
10:46/mi
2:58:02
↑ 17↓ 861.7%
23M
9:53/mi
3:10:24
↑ 23↓ 630.6%
24M
9:15/mi
3:19:39
↓ 821.3%
40K· 24.85 mi
10:35/mi
3:28:42
↓ 200.3%
25.2M
10:12/mi
3:32:13
↑ 13↓ 160.2%
Finish· 26.22 mi
8:53/mi
3:41:16
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:37
Pace7:36 /mi
2nd Half
Distance13.11 mi
Time2:01:39
Pace9:17 /mi
📊Positive Split: 22.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:40:5224:177:4924:17
7:49
-
10K
6.21 mi12:03:5447:197:3723:02
7:25
-0:24
15K
9.32 mi12:27:121:10:377:3523:18
7:30
+0:05
20K
12.43 mi12:50:541:34:197:3523:42
7:38
+0:08
Half
13.11 mi12:56:121:39:377:365:18
7:46
+0:08
25K
15.53 mi13:15:471:59:127:4019:35
8:05
+0:19
30K
18.64 mi13:43:052:26:307:5227:18
8:47
+0:42
20M
20.00 mi13:56:392:40:048:0013:34
9:59
+1:12
21M
21.00 mi14:06:342:49:598:069:55
9:55
-0:04
35K
21.75 mi14:14:372:58:028:118:03
10:46
+0:51
23M
23.00 mi14:26:593:10:248:1712:22
9:53
-0:53
24M
24.00 mi14:36:143:19:398:199:15
9:15
-0:38
40K
24.85 mi14:45:173:28:428:249:03
10:35
+1:20
25.2M
25.20 mi14:48:483:32:138:253:31
10:12
-0:23
Finish
26.22 mi14:57:513:41:168:279:03
8:53
-1:19

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

7:25 /mi

Average Pace

8:27 /mi

Slowest Pace

10:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:59:12

54% of race

Time at Steady Pace

45:36

21% of race

Time at Slower Pace

56:28

26% of race

Average Pace: 8:26 /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 mi11:40:5224:177:4924:17
7:49
#14944
10K
6.21 mi12:03:5447:197:3723:02
7:25
#13166
15K
9.32 mi12:27:121:10:377:3523:18
7:30
#12652
20K
12.43 mi12:50:541:34:197:3523:42
7:38
#12399
Half
13.11 mi12:56:121:39:377:365:18
7:46
#12487
25K
15.53 mi13:15:471:59:127:4019:35
8:05
#12786
30K
18.64 mi13:43:052:26:307:5227:18
8:47
#13556
20M
20.00 mi13:56:392:40:048:0013:34
9:59
#14351
21M
21.00 mi14:06:342:49:598:069:55
9:55
#14639
35K
21.75 mi14:14:372:58:028:118:03
10:46
#15200
23M
23.00 mi14:26:593:10:248:1712:22
9:53
#15579
24M
24.00 mi14:36:143:19:398:199:15
9:15
#15684
40K
24.85 mi14:45:173:28:428:249:03
10:35
#16056
25.2M
25.20 mi14:48:483:32:138:253:31
10:12
#16077
Finish
26.22 mi14:57:513:41:168:279:03
8:53
#16191
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi14944104081040811762(Top 41%)8956(Top 56%)8956(Top 159%)
10K6.21 mi3.10 mi13166+17789687+7219687+72111310(Top 40%)8812(Top 55%)8812(Top 156%)
15K9.32 mi3.11 mi12652+5149439+2489439+24811762(Top 41%)8956(Top 56%)8956(Top 159%)
20K12.43 mi3.11 mi12399+2539279+1609279+16011794(Top 42%)8880(Top 55%)8880(Top 157%)
Half13.11 mi0.68 mi12487-889311-329311-3213966(Top 49%)9910(Top 62%)9910(Top 176%)
25K15.53 mi2.42 mi12786-2999397-869397-8614473(Top 51%)9966(Top 62%)9966(Top 177%)
30K18.64 mi3.11 mi13556-7709664-2679664-26716507(Top 58%)10717(Top 67%)10717(Top 190%)
20M20.00 mi1.36 mi14351-7959980-3169980-31620870(Top 73%)12524(Top 78%)12524(Top 222%)
21M21.00 mi1.00 mi14639-28810077-9710077-9717955(Top 63%)11137(Top 69%)11137(Top 197%)
35K21.75 mi0.75 mi15200-56110305-22810305-22823698(Top 83%)13735(Top 85%)13735(Top 243%)
23M23.00 mi1.25 mi15579-37910420-11510420-11520049(Top 71%)11917(Top 74%)11917(Top 211%)
24M24.00 mi1.00 mi15684-10510443-2310443-2318561(Top 65%)11190(Top 69%)11190(Top 198%)
40K24.85 mi0.85 mi16056-37210574-13110574-13122134(Top 78%)12802(Top 79%)12802(Top 227%)
25.2M25.20 mi0.35 mi16077-2110579-510579-517828(Top 63%)10730(Top 67%)10730(Top 190%)
Finish26.22 mi1.02 mi16191-11410610-3110610-3118427(Top 65%)11076(Top 69%)11076(Top 196%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21story building
+97ft-345ft

Overall

11762

Males

8956

M18-39

8956

5K→10K

3.1 - 6.2 mi

Top 40%
×5story building
+79ft-138ft

Overall

11310

Males

8812

M18-39

8812

10K→15K

6.2 - 9.3 mi

Top 41%
×3story building
+67ft-78ft

Overall

11762

Males

8956

M18-39

8956

15K→20K

9.3 - 12.4 mi

Top 42%
×5story building
+106ft-86ft

Overall

11794

Males

8880

M18-39

8880

20K→Half

12.4 - 13.1 mi

Top 49%
×2story building
+19ft-37ft

Overall

13966

Males

9910

M18-39

9910

Half→25K

13.1 - 15.5 mi

Top 51%
×4story building
+66ft-88ft

Overall

14473

Males

9966

M18-39

9966

25K→30K

15.5 - 18.6 mi

Top 58%
×9story building
+181ft-148ft

Overall

16507

Males

10717

M18-39

10717

30K→20M

18.6 - 20.0 mi

Top 73%
×5story building
+64ft-50ft

Overall

20870

Males

12524

M18-39

12524

20M→21M

20.0 - 21.0 mi

Top 63%
×8story building
+106ft-24ft

Overall

17955

Males

11137

M18-39

11137

21M→35K

21.0 - 21.8 mi

Top 83%
×7story building
+17ft-86ft

Overall

23698

Males

13735

M18-39

13735

35K→23M

21.8 - 23.0 mi

Top 71%
×5story building
+23ft-63ft

Overall

20049

Males

11917

M18-39

11917

23M→24M

23.0 - 24.0 mi

Top 65%
×6story building
+12ft-82ft

Overall

18561

Males

11190

M18-39

11190

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

22134

Males

12802

M18-39

12802

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

17828

Males

10730

M18-39

10730

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2story building
+22ft-21ft

Overall

18427

Males

11076

M18-39

11076

Passing Analysis

Category:
Athletes Passed
3092
Passed By
4339
Net Change
-1247
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14944
5K → 10K17868+1778#14944#13166
10K → 15K55036+514#13166#12652
15K → 20K32774+253#12652#12399
20K → Half1098-88#12399#12487
Half → 25K91390-299#12487#12786
25K → 30K88858-770#12786#13556
30K → 20M24819-795#13556#14351
20M → 21M46334-288#14351#14639
21M → 35K10571-561#14639#15200
35K → 23M37416-379#15200#15579
23M → 24M37142-105#15579#15684
24M → 40K18390-372#15684#16056
40K → 25.2M2849-21#16056#16077
25.2M → Finish40154-114#16077#16191
TOTALS30924339-1247
📊

Passing Visuals

Category:
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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