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BOSTON MARATHON 2025

Yunzhi Gu

Bib: 4996•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 28%
Gender (Male)
#0 / 16105
Top 41%
Masters (Masters Men)
#0 / 10463
Top 28%
Division (M45-49)
#0 / 2386
Top 40%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:38
Rank: #2573
Start → 5K
19:38 | 6:19/mi
10K· 6.21 mi
39:38
Rank: #2903 (-330)
5K → 10K
20:00 | 6:26/mi
15K· 9.32 mi
1:00:17
Rank: #3446 (-543)
10K → 15K
20:39 | 6:39/mi
20K· 12.43 mi
1:21:49
Rank: #4036 (-590)
15K → 20K
21:32 | 6:56/mi
Half· 13.11 mi
1:26:30
Rank: #4154 (-118)
20K → Half
4:41 | 6:52/mi
25K· 15.53 mi
1:44:03
Rank: #4778 (-624)
Half → 25K
17:33 | 7:14/mi
30K· 18.64 mi
2:08:29
Rank: #5913 (-1135)
25K → 30K
24:26 | 7:52/mi
20M
2:19:56
Rank: #6366 (-453)
30K → 20M
11:27 | 8:26/mi
21M
2:29:00
Rank: #6668 (-302)
20M → 21M
9:04 | 9:04/mi
35K· 21.75 mi
2:35:07
Rank: #6861 (-193)
21M → 35K
6:07 | 8:11/mi
23M
2:45:44
Rank: #7148 (-287)
35K → 23M
10:37 | 8:29/mi
24M
2:53:53
Rank: #7320 (-172)
23M → 24M
8:09 | 8:09/mi
40K· 24.85 mi
3:01:10
Rank: #7507 (-187)
24M → 40K
7:17 | 8:31/mi
25.2M
3:04:25
Rank: #7609 (-102)
40K → 25.2M
3:15 | 9:25/mi
Finish· 26.22 mi
3:13:04
Rank: #7922 (-313)
25.2M → Finish
8:39 | 8:29/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:30
Pace6:36 /mi
2nd Half
Distance13.11 mi
Time1:46:34
Pace8:08 /mi
📊Positive Split: 23.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:3419:386:1919:38
6:19
-
10K
6.21 mi10:43:3439:386:2320:00
6:26
+0:07
15K
9.32 mi11:04:131:00:176:2820:39
6:39
+0:13
20K
12.43 mi11:25:451:21:496:3521:32
6:56
+0:17
Half
13.11 mi11:30:261:26:306:364:41
6:52
-0:04
25K
15.53 mi11:47:591:44:036:4217:33
7:14
+0:22
30K
18.64 mi12:12:252:08:296:5424:26
7:52
+0:38
20M
20.00 mi12:23:522:19:567:0011:27
8:26
+0:34
21M
21.00 mi12:32:562:29:007:069:04
9:04
+0:38
35K
21.75 mi12:39:032:35:077:086:07
8:11
-0:53
23M
23.00 mi12:49:402:45:447:1210:37
8:29
+0:18
24M
24.00 mi12:57:492:53:537:158:09
8:09
-0:20
40K
24.85 mi13:05:063:01:107:177:17
8:31
+0:22
25.2M
25.20 mi13:08:213:04:257:193:15
9:25
+0:54
Finish
26.22 mi13:17:003:13:047:228:39
8:29
-0:56

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

6:19 /mi

Average Pace

7:22 /mi

Slowest Pace

9:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:44:03

54% of race

Time at Steady Pace

1:16:42

40% of race

Time at Slower Pace

12:19

6% of race

Average Pace: 7:22 /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 mi10:23:3419:386:1919:38
6:19
#2573
10K
6.21 mi10:43:3439:386:2320:00
6:26
#2903
15K
9.32 mi11:04:131:00:176:2820:39
6:39
#3446
20K
12.43 mi11:25:451:21:496:3521:32
6:56
#4036
Half
13.11 mi11:30:261:26:306:364:41
6:52
#4154
25K
15.53 mi11:47:591:44:036:4217:33
7:14
#4778
30K
18.64 mi12:12:252:08:296:5424:26
7:52
#5913
20M
20.00 mi12:23:522:19:567:0011:27
8:26
#6366
21M
21.00 mi12:32:562:29:007:069:04
9:04
#6668
35K
21.75 mi12:39:032:35:077:086:07
8:11
#6861
23M
23.00 mi12:49:402:45:447:1210:37
8:29
#7148
24M
24.00 mi12:57:492:53:537:158:09
8:09
#7320
40K
24.85 mi13:05:063:01:107:177:17
8:31
#7507
25.2M
25.20 mi13:08:213:04:257:193:15
9:25
#7609
Finish
26.22 mi13:17:003:13:047:228:39
8:29
#7922
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi2573244924494633(Top 16%)4337(Top 27%)4337(Top 182%)
10K6.21 mi3.10 mi2903-3302766-3172766-3173303(Top 12%)3140(Top 19%)3140(Top 132%)
15K9.32 mi3.11 mi3446-5433272-5063272-5064633(Top 16%)4337(Top 27%)4337(Top 182%)
20K12.43 mi3.11 mi4036-5903801-5293801-5296433(Top 23%)5773(Top 36%)5773(Top 242%)
Half13.11 mi0.68 mi4154-1183909-1083909-1086677(Top 24%)5973(Top 37%)5973(Top 250%)
25K15.53 mi2.42 mi4778-6244445-5364445-5367882(Top 28%)6690(Top 42%)6690(Top 280%)
30K18.64 mi3.11 mi5913-11355371-9265371-92610367(Top 36%)7865(Top 49%)7865(Top 330%)
20M20.00 mi1.36 mi6366-4535712-3415712-34113285(Top 47%)9108(Top 57%)9108(Top 382%)
21M21.00 mi1.00 mi6668-3025915-2035915-20313863(Top 49%)9260(Top 57%)9260(Top 388%)
35K21.75 mi0.75 mi6861-1936042-1276042-12713396(Top 47%)8972(Top 56%)8972(Top 376%)
23M23.00 mi1.25 mi7148-2876193-1516193-15113152(Top 46%)8762(Top 54%)8762(Top 367%)
24M24.00 mi1.00 mi7320-1726272-796272-7912204(Top 43%)8260(Top 51%)8260(Top 346%)
40K24.85 mi0.85 mi7507-1876356-846356-8413501(Top 48%)8745(Top 54%)8745(Top 367%)
25.2M25.20 mi0.35 mi7609-1026410-546410-5414047(Top 49%)8932(Top 55%)8932(Top 374%)
Finish26.22 mi1.02 mi7922-3136580-1706580-17016101(Top 57%)9967(Top 62%)9967(Top 418%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4633

Males

4337

M45-49

4337

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3303

Males

3140

M45-49

3140

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4633

Males

4337

M45-49

4337

15K→20K

9.3 - 12.4 mi

Top 23%
×5stories
+106ft-86ft

Overall

6433

Males

5773

M45-49

5773

20K→Half

12.4 - 13.1 mi

Top 24%
×2stories
+19ft-37ft

Overall

6677

Males

5973

M45-49

5973

Half→25K

13.1 - 15.5 mi

Top 28%
×4stories
+66ft-88ft

Overall

7882

Males

6690

M45-49

6690

25K→30K

15.5 - 18.6 mi

Top 36%
×9stories
+181ft-148ft

Overall

10367

Males

7865

M45-49

7865

30K→20M

18.6 - 20.0 mi

Top 47%
×5stories
+64ft-50ft

Overall

13285

Males

9108

M45-49

9108

20M→21M

20.0 - 21.0 mi

Top 49%
×8stories
+106ft-24ft

Overall

13863

Males

9260

M45-49

9260

21M→35K

21.0 - 21.8 mi

Top 47%
×7stories
+17ft-86ft

Overall

13396

Males

8972

M45-49

8972

35K→23M

21.8 - 23.0 mi

Top 46%
×5stories
+23ft-63ft

Overall

13152

Males

8762

M45-49

8762

23M→24M

23.0 - 24.0 mi

Top 43%
×6stories
+12ft-82ft

Overall

12204

Males

8260

M45-49

8260

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

13501

Males

8745

M45-49

8745

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

14047

Males

8932

M45-49

8932

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2stories
+22ft-21ft

Overall

16101

Males

9967

M45-49

9967

Passing Analysis

Category:
Athletes Passed
280
Passed By
5629
Net Change
-5349
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2573
5K → 10K37367-330#2573#2903
10K → 15K12555-543#2903#3446
15K → 20K14604-590#3446#4036
20K → Half2120-118#4036#4154
Half → 25K22646-624#4154#4778
25K → 30K361171-1135#4778#5913
30K → 20M14467-453#5913#6366
20M → 21M15317-302#6366#6668
21M → 35K14207-193#6668#6861
35K → 23M35322-287#6861#7148
23M → 24M30202-172#7148#7320
24M → 40K31218-187#7320#7507
40K → 25.2M10112-102#7507#7609
25.2M → Finish8321-313#7609#7922
TOTALS2805629-5349
📊

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