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BOSTON MARATHON 2025

Christian Guzman

Bib: 28551•M

NV

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
10:16/mi
31:55
↑ 97↓ 3451.5%
10K· 6.21 mi
10:30/mi
1:04:31
↑ 79↓ 1380.4%
15K· 9.32 mi
10:32/mi
1:37:13
↑ 67↓ 78
20K· 12.43 mi
10:49/mi
2:10:49
↑ 106↓ 860.1%
Half· 13.11 mi
10:21/mi
2:17:53
↑ 19↓ 370.5%
25K· 15.53 mi
10:57/mi
2:44:27
↑ 66↓ 880.2%
30K· 18.64 mi
12:15/mi
3:22:32
↑ 181↓ 1480.2%
20M
11:46/mi
3:38:31
↑ 64↓ 500.2%
21M
13:17/mi
3:51:48
↑ 106↓ 241.6%
35K· 21.75 mi
12:08/mi
4:00:53
↑ 17↓ 861.7%
23M
12:39/mi
4:16:43
↑ 23↓ 630.6%
24M
12:14/mi
4:28:57
↓ 821.3%
40K· 24.85 mi
13:15/mi
4:40:17
↓ 200.3%
25.2M
17:24/mi
4:46:17
↑ 13↓ 160.2%
Finish· 26.22 mi
11:36/mi
4:58:06
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:17:53
Pace10:31 /mi
2nd Half
Distance13.11 mi
Time2:40:13
Pace12:13 /mi
📊Positive Split: 16.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:55:0431:5510:1631:55
10:16
-
10K
6.21 mi12:27:401:04:3110:2332:36
10:30
+0:14
15K
9.32 mi13:00:221:37:1310:2632:42
10:32
+0:02
20K
12.43 mi13:33:582:10:4910:3233:36
10:49
+0:17
Half
13.11 mi13:41:022:17:5310:317:04
10:21
-0:28
25K
15.53 mi14:07:362:44:2710:3526:34
10:57
+0:36
30K
18.64 mi14:45:413:22:3210:5238:05
12:15
+1:18
20M
20.00 mi15:01:403:38:3110:5615:59
11:46
-0:29
21M
21.00 mi15:14:573:51:4811:0213:17
13:17
+1:31
35K
21.75 mi15:24:024:00:5311:059:05
12:08
-1:09
23M
23.00 mi15:39:524:16:4311:1015:50
12:39
+0:31
24M
24.00 mi15:52:064:28:5711:1212:14
12:14
-0:25
40K
24.85 mi16:03:264:40:1711:1711:20
13:15
+1:01
25.2M
25.20 mi16:09:264:46:1711:226:00
17:24
+4:09
Finish
26.22 mi16:21:154:58:0611:2311:49
11:36
-5:48

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

10:16 /mi

Average Pace

11:23 /mi

Slowest Pace

17:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:17:53

46% of race

Time at Steady Pace

1:53:46

38% of race

Time at Slower Pace

46:27

16% of race

Average Pace: 11:22 /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 mi11:55:0431:5510:1631:55
10:16
#26245
10K
6.21 mi12:27:401:04:3110:2332:36
10:30
#26254
15K
9.32 mi13:00:221:37:1310:2632:42
10:32
#26155
20K
12.43 mi13:33:582:10:4910:3233:36
10:49
#26023
Half
13.11 mi13:41:022:17:5310:317:04
10:21
#25989
25K
15.53 mi14:07:362:44:2710:3526:34
10:57
#25851
30K
18.64 mi14:45:413:22:3210:5238:05
12:15
#25856
20M
20.00 mi15:01:403:38:3110:5615:59
11:46
#25779
21M
21.00 mi15:14:573:51:4811:0213:17
13:17
#25781
35K
21.75 mi15:24:024:00:5311:059:05
12:08
#25809
23M
23.00 mi15:39:524:16:4311:1015:50
12:39
#25843
24M
24.00 mi15:52:064:28:5711:1212:14
12:14
#25866
40K
24.85 mi16:03:264:40:1711:1711:20
13:15
#25916
25.2M
25.20 mi16:09:264:46:1711:226:00
17:24
#26004
Finish
26.22 mi16:21:154:58:0611:2311:49
11:36
#26032
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi26245152861528625988(Top 91%)15140(Top 94%)15140(Top 268%)
10K6.21 mi3.10 mi26254-915278+815278+826249(Top 92%)15248(Top 95%)15248(Top 270%)
15K9.32 mi3.11 mi26155+9915224+5415224+5425988(Top 91%)15140(Top 94%)15140(Top 268%)
20K12.43 mi3.11 mi26023+13215155+6915155+6925737(Top 91%)15007(Top 93%)15007(Top 266%)
Half13.11 mi0.68 mi25989+3415139+1615139+1625559(Top 90%)14916(Top 93%)14916(Top 264%)
25K15.53 mi2.42 mi25851+13815070+6915070+6925142(Top 89%)14711(Top 91%)14711(Top 261%)
30K18.64 mi3.11 mi25856-515046+2415046+2425893(Top 91%)14941(Top 93%)14941(Top 265%)
20M20.00 mi1.36 mi25779+7714990+5614990+5624939(Top 88%)14436(Top 90%)14436(Top 256%)
21M21.00 mi1.00 mi25781-214982+814982+825418(Top 89%)14582(Top 91%)14582(Top 258%)
35K21.75 mi0.75 mi25809-2814989-714989-726060(Top 92%)14864(Top 92%)14864(Top 263%)
23M23.00 mi1.25 mi25843-3414999-1014999-1025983(Top 91%)14828(Top 92%)14828(Top 263%)
24M24.00 mi1.00 mi25866-2314996+314996+325966(Top 91%)14785(Top 92%)14785(Top 262%)
40K24.85 mi0.85 mi25916-5015016-2015016-2026550(Top 93%)15063(Top 94%)15063(Top 267%)
25.2M25.20 mi0.35 mi26004-8815057-4115057-4128133(Top 99%)15909(Top 99%)15909(Top 282%)
Finish26.22 mi1.02 mi26032-28150571505726286(Top 93%)14925(Top 93%)14925(Top 265%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 91%
×21story building
+97ft-345ft

Overall

25988

Males

15140

M18-39

15140

5K→10K

3.1 - 6.2 mi

Top 92%
×5story building
+79ft-138ft

Overall

26249

Males

15248

M18-39

15248

10K→15K

6.2 - 9.3 mi

Top 91%
×3story building
+67ft-78ft

Overall

25988

Males

15140

M18-39

15140

15K→20K

9.3 - 12.4 mi

Top 91%
×5story building
+106ft-86ft

Overall

25737

Males

15007

M18-39

15007

20K→Half

12.4 - 13.1 mi

Top 90%
×2story building
+19ft-37ft

Overall

25559

Males

14916

M18-39

14916

Half→25K

13.1 - 15.5 mi

Top 89%
×4story building
+66ft-88ft

Overall

25142

Males

14711

M18-39

14711

25K→30K

15.5 - 18.6 mi

Top 91%
×9story building
+181ft-148ft

Overall

25893

Males

14941

M18-39

14941

30K→20M

18.6 - 20.0 mi

Top 88%
×5story building
+64ft-50ft

Overall

24939

Males

14436

M18-39

14436

20M→21M

20.0 - 21.0 mi

Top 89%
×8story building
+106ft-24ft

Overall

25418

Males

14582

M18-39

14582

21M→35K

21.0 - 21.8 mi

Top 92%
×7story building
+17ft-86ft

Overall

26060

Males

14864

M18-39

14864

35K→23M

21.8 - 23.0 mi

Top 91%
×5story building
+23ft-63ft

Overall

25983

Males

14828

M18-39

14828

23M→24M

23.0 - 24.0 mi

Top 91%
×6story building
+12ft-82ft

Overall

25966

Males

14785

M18-39

14785

24M→40K

24.0 - 24.9 mi

Top 93%
×1story
+6ft-20ft

Overall

26550

Males

15063

M18-39

15063

40K→25.2M

24.9 - 25.2 mi

Top 99%
×1story
+13ft-16ft

Overall

28133

Males

15909

M18-39

15909

25.2M→Finish

25.2 - 26.2 mi

Top 93%
×2story building
+22ft-21ft

Overall

26286

Males

14925

M18-39

14925

Passing Analysis

Category:
Athletes Passed
1052
Passed By
839
Net Change
+213
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26245
5K → 10K164173-9#26245#26254
10K → 15K17071+99#26254#26155
15K → 20K18149+132#26155#26023
20K → Half428+34#26023#25989
Half → 25K17032+138#25989#25851
25K → 30K99104-5#25851#25856
30K → 20M9013+77#25856#25779
20M → 21M4345-2#25779#25781
21M → 35K1745-28#25781#25809
35K → 23M2862-34#25809#25843
23M → 24M2346-23#25843#25866
24M → 40K1161-50#25866#25916
40K → 25.2M189-88#25916#26004
25.2M → Finish1341-28#26004#26032
TOTALS1052839+213
📊

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