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SF MARATHON 2026

Chang Uk Chung

Bib: 4256•M•Age: 56

Mountain House, CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 7166
Gender (Male)
#0 / 5052
Masters (Masters Men)
#0 / 1321
Division (M55-59)
#0 / 145
Top 48%
Race Day Weather
59°/49°F
scattered clouds

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
2M
18:45
Rank: #3076
Start → 2M
18:45 | 9:22/mi
4M
36:47
Rank: #2683 (+393)
2M → 4M
18:02 | 9:01/mi
6M
54:34
Rank: #2404 (+279)
4M → 6M
17:47 | 8:53/mi
8M
1:13:25
Rank: #2655 (-251)
6M → 8M
18:51 | 9:25/mi
9.6M
1:29:51
Rank: #2820 (-165)
8M → 9.6M
16:26 | 10:16/mi
10M
1:32:41
Rank: #2856 (-36)
9.6M → 10M
2:50 | 7:05/mi
10.5M
1:39:19
Rank: #2881 (-25)
10M → 10.5M
6:38 | 13:16/mi
12M
1:55:38
Rank: #3178 (-297)
10.5M → 12M
16:19 | 10:53/mi
14M
2:17:55
Rank: #3310 (-132)
12M → 14M
22:17 | 11:08/mi
16M
2:41:32
Rank: #3782 (-472)
14M → 16M
23:37 | 11:49/mi
18M
3:05:09
Rank: #3859 (-77)
16M → 18M
23:37 | 11:49/mi
20M
3:27:46
Rank: #3854 (+5)
18M → 20M
22:37 | 11:18/mi
22M
3:49:55
Rank: #3896 (-42)
20M → 22M
22:09 | 11:04/mi
24M
4:17:01
Rank: #4049 (-153)
22M → 24M
27:06 | 13:33/mi
Finish· 26.22 mi
4:43:44
Rank: #4101 (-52)
24M → Finish
26:43 | 12:02/mi

Course Map & Elevation

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Half Splits

1st Half· via 14MFaster
Distance14.00 mi
Time2:17:55
Pace9:51 /mi
2nd Half
Distance12.22 mi
Time2:25:49
Pace11:56 /mi
📊Positive Split: 5.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi05:39:1818:459:2218:45
9:22
-
4M
4.00 mi05:57:2036:479:1218:02
9:01
-0:21
6M
6.00 mi06:15:0754:349:0617:47
8:53
-0:08
8M
8.00 mi06:33:581:13:259:1118:51
9:25
+0:32
9.6M
9.60 mi06:50:241:29:519:2216:26
10:16
+0:51
10M
10.00 mi06:53:141:32:419:162:50
7:05
-3:11
10.5M
10.50 mi06:59:521:39:199:286:38
13:16
+6:11
12M
12.00 mi07:16:111:55:389:3816:19
10:53
-2:23
14M
14.00 mi07:38:282:17:559:5122:17
11:08
+0:15
16M
16.00 mi08:02:052:41:3210:0623:37
11:49
+0:41
18M
18.00 mi08:25:423:05:0910:1723:37
11:49
0:00
20M
20.00 mi08:48:193:27:4610:2322:37
11:18
-0:31
22M
22.00 mi09:10:283:49:5510:2722:09
11:04
-0:14
24M
24.00 mi09:37:344:17:0110:4327:06
13:33
+2:29
Finish
26.22 mi10:04:174:43:4410:5026:43
12:02
-1:31

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

7:05 /mi

Average Pace

10:50 /mi

Slowest Pace

13:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

1:16:15

27% of race

Time at Steady Pace

2:27:02

52% of race

Time at Slower Pace

1:00:27

21% of race

Average Pace: 10:49 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
2M
2.00 mi05:39:1818:459:2218:45
9:22
#3076
4M
4.00 mi05:57:2036:479:1218:02
9:01
#2683
6M
6.00 mi06:15:0754:349:0617:47
8:53
#2404
8M
8.00 mi06:33:581:13:259:1118:51
9:25
#2655
9.6M
9.60 mi06:50:241:29:519:2216:26
10:16
#2820
10M
10.00 mi06:53:141:32:419:162:50
7:05
#2856
10.5M
10.50 mi06:59:521:39:199:286:38
13:16
#2881
12M
12.00 mi07:16:111:55:389:3816:19
10:53
#3178
14M
14.00 mi07:38:282:17:559:5122:17
11:08
#3310
16M
16.00 mi08:02:052:41:3210:0623:37
11:49
#3782
18M
18.00 mi08:25:423:05:0910:1723:37
11:49
#3859
20M
20.00 mi08:48:193:27:4610:2322:37
11:18
#3854
22M
22.00 mi09:10:283:49:5510:2722:09
11:04
#3896
24M
24.00 mi09:37:344:17:0110:4327:06
13:33
#4049
Finish
26.22 mi10:04:174:43:4410:5026:43
12:02
#4101
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior
Garmin Challenge
Featured Segment

Garmin Challenge

The climb, presented by Garmin

Top 51%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

9:28

Segment Time

10:31/mi

Pace

0.90 mi

Distance

Overall

3634

Men

2890

Division

66

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
2M2.00 mi2.00 mi30762510545028(Top 70%)3777(Top 75%)84(Top 58%)
4M4.00 mi2.00 mi2683+3932218+29243+112234(Top 31%)1879(Top 37%)32(Top 22%)
6M6.00 mi2.00 mi2404+2792017+20138+51992(Top 28%)1707(Top 34%)30(Top 21%)
8M8.00 mi2.00 mi2655-2512200-18340-23251(Top 45%)2652(Top 52%)52(Top 36%)
9.6M9.60 mi1.60 mi2820-1652322-12245-53473(Top 48%)2786(Top 55%)57(Top 39%)
10M10.00 mi0.40 mi2856-362352-3046-14205(Top 59%)3270(Top 65%)78(Top 54%)
10.5M10.50 mi0.50 mi2881-252373-2147-13572(Top 50%)2827(Top 56%)64(Top 44%)
12M12.00 mi1.50 mi3178-2972593-22052-55028(Top 70%)3777(Top 75%)84(Top 58%)
14M14.00 mi2.00 mi3310-1322677-8455-34152(Top 58%)3224(Top 64%)72(Top 50%)
16M16.00 mi2.00 mi3782-4722998-32164-96065(Top 85%)4382(Top 87%)122(Top 84%)
18M18.00 mi2.00 mi3859-773034-3666-24272(Top 60%)3201(Top 63%)73(Top 50%)
20M20.00 mi2.00 mi3854+53004+3064+24134(Top 58%)3068(Top 61%)73(Top 50%)
22M22.00 mi2.00 mi3896-423020-16644331(Top 60%)3134(Top 62%)75(Top 52%)
24M24.00 mi2.00 mi4049-1533108-8865-15249(Top 73%)3741(Top 74%)88(Top 61%)
Finish26.22 mi2.22 mi4101-523129-2169-44582(Top 64%)3307(Top 65%)73(Top 50%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 70%
×1human
+6ft-11ft

Overall

5028

Males

3777

M55-59

84

2M→4M

2.0 - 4.0 mi

Top 31%
×4stories
+75ft-70ft

Overall

2234

Males

1879

M55-59

32

4M→6M

4.0 - 6.0 mi

Top 28%
×5stories
+71ft-18ft

Overall

1992

Males

1707

M55-59

30

6M→8M

6.0 - 8.0 mi

Top 45%
×9stories
+106ft-21ft

Overall

3251

Males

2652

M55-59

52

8M→9.6M

8.0 - 9.6 mi

Top 48%
×13stories
+117ft-177ft

Overall

3473

Males

2786

M55-59

57

9.6M→10M

9.6 - 10.0 mi

Top 59%
×1story
+17ft-12ft

Overall

4205

Males

3270

M55-59

78

10M→10.5M

10.0 - 10.5 mi

Top 50%
×9stories
+0ft-102ft

Overall

3572

Males

2827

M55-59

64

10.5M→12M

10.5 - 12.0 mi

Top 70%
×18stories
+304ft-125ft

Overall

5028

Males

3777

M55-59

84

12M→14M

12.0 - 14.0 mi

Top 58%
×9stories
+99ft-125ft

Overall

4152

Males

3224

M55-59

72

14M→16M

14.0 - 16.0 mi

Top 85%
×9stories
+124ft-78ft

Overall

6065

Males

4382

M55-59

122

16M→18M

16.0 - 18.0 mi

Top 60%
×8stories
+106ft-45ft

Overall

4272

Males

3201

M55-59

73

18M→20M

18.0 - 20.0 mi

Top 58%
×3stories
+52ft-26ft

Overall

4134

Males

3068

M55-59

73

20M→22M

20.0 - 22.0 mi

Top 60%
×21stories
+17ft-266ft

Overall

4331

Males

3134

M55-59

75

22M→24M

22.0 - 24.0 mi

Top 73%
×3stories
+70ft-85ft

Overall

5249

Males

3741

M55-59

88

24M→Finish

24.0 - 26.2 mi

Top 64%
~flat
+2ft-2ft

Overall

4582

Males

3307

M55-59

73

Passing Analysis

Category:
Athletes Passed
1058*
Passed By
2083
Net Change
-1025
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#3076
2M → 4M408*15+393#3076#2683
4M → 6M2823+279#2683#2404
6M → 8M11*262-251#2404#2655
8M → 9.6M25*190-165#2655#2820
9.6M → 10M844-36#2820#2856
10M → 10.5M3257-25#2856#2881
10.5M → 12M6303-297#2881#3178
12M → 14M23*155-132#3178#3310
14M → 16M12*484-472#3310#3782
16M → 18M69146-77#3782#3859
18M → 20M68*63+5#3859#3854
20M → 22M49*91-42#3854#3896
22M → 24M23*176-153#3896#4049
24M → Finish42*94-52#4049#4101
TOTALS1058*2083-1025

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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